CN104216210A

CN104216210A - Light source system and related projection system

Info

Publication number: CN104216210A
Application number: CN201410391971.3A
Authority: CN
Inventors: 胡飞; 李屹; 曹亮亮; 杨毅
Original assignee: Shenzhen Yili Ruiguang Technology Development Co Ltd
Current assignee: Shenzhen Appotronics Corp Ltd; Shenzhen Appotronics Technology Co Ltd
Priority date: 2012-09-28
Filing date: 2012-09-28
Publication date: 2014-12-17
Anticipated expiration: 2032-09-28
Also published as: CN104216210B

Abstract

An embodiment of the invention discloses a light source system. The light source system comprises a lighting device, a light division system, a first spatial light modulator and a second spatial light modulator; the lighting device is used for emitting first light and second light in order; the light division system is used for dividing the first light from the lighting device into first-range wavelength light and second-range wavelength light which are emitted along a first light passage and a second light passage respectively; the light division system is further used for emitting at least part of the second light from the lighting device along the first light passage; the first spatial light modulator is used for modulating the light which is emitted by the light division system along the first light passage; the second spatial light modulator is used for modulating at least part of the light which is emitted by the light division system along the second light passage. The light source system is high in lighting efficiency and low in cost.

Description

Light-source system and relevant projecting system

The application is applicant is 201210370655.9 in the application number that 2012 submit for 09 month on the 28th, and denomination of invention is the divisional application of " light-source system and relevant projecting system ".

Technical field

The present invention relates to illumination and display technique field, particularly relate to a kind of light-source system and relevant projecting system thereof.

Background technology

At existing one chip DMD (Digital Micromirror Device, digital micromirror elements) in system, multiple primary lights alternately enter DMD (DMD) and are modulated by it, modulate the monochromatic light image obtained alternately to switch fast on screen, and then utilize the persistence of vision effect of human eye that the monochromatic light image blend of each sequential is formed coloured image together.And in prior art, generally adopt R (red, ruddiness), G (green, green glow), B (blue, blue light) three primary colours light modulates.The most frequently used way obtaining three primary colours sequential light adopts exciting light to excite different segmentations on colour wheel with outgoing different colours light successively successively.In the structure shown here, excitation source adopts blue led (Light Emitting Diode, light emitting diode) or blue laser.Colour wheel has three subregions, a subregion is provided with photic zone, for transmit blue; Another two subregions are respectively arranged with green light fluorescent powder and red light fluorescent powder, are respectively used to absorb exciting light and produce green Stimulated Light and red Stimulated Light.

But in this phosphor source, red fluorescence powder is the restriction mission life of light source and a bottleneck of luminescence efficiency.The light conversion efficiency of red light fluorescent powder is not high, and the energy wherein lost all is converted to heat, causes the temperature of fluorescent powder to rise fast, can affect its luminescence efficiency and serviceable life again conversely, forms vicious cycle.

Summary of the invention

The technical matters that the present invention mainly solves is to provide a kind of light-source system having luminescence efficiency and lower cost concurrently.

The embodiment of the present invention provides a kind of light-source system, comprising:

Light-emitting device, for sequentially outgoing first light and the second light;

Beam splitting system, for future, the first light of selfluminous device is divided into respectively along the first range of wavelength light and the second range of wavelength light of the first optical channel and the second optical channel outgoing, also for future selfluminous device at least part of light of the second light along the first optical channel outgoing;

First spatial light modulator, for modulating the light of described beam splitting system along the first optical channel outgoing;

Second space photomodulator, for modulating at least part of light of described beam splitting system along the second optical channel outgoing.

The embodiment of the present invention also provides a kind of optical projection system, comprises above-mentioned light-source system.

Compared with prior art, the present invention includes following beneficial effect:

First smooth light splitting is become the first range of wavelength light and the second range of wavelength light by the present invention, and sequence outgoing during at least part of light of these two range of wavelength light and the second light, like this, certain period outgoing two light beams, the a branch of light beam of another period outgoing, modulates three light beams to make it possible to employing two spatial light modulators; And the Stimulated Light light splitting that the present invention can adopt the material for transformation of wave length with high light conversion efficiency to produce becomes another two color of light with the material for transformation of wave length of lower light conversion efficiency, to improve the efficiency of light source.

Accompanying drawing explanation

Fig. 1 is the yellow spectrum that yellow fluorescent powder produces.

Fig. 2 is the schematic diagram of an embodiment of light-source system of the present invention;

Fig. 3 A is a kind of embodiment of the sequential chart of wavelength conversion layer 203 emergent light;

Fig. 3 B and Fig. 3 C is respectively a kind of embodiment of the modulating time figure of DMD 211 and DMD 213 pairs of different color lights;

Fig. 4 is another embodiment of the modulating time figure of DMD 213 pairs of ruddiness;

Fig. 5 is the schematic diagram of another embodiment of light-source system of the present invention;

Fig. 6 is the schematic diagram of another embodiment of light-source system of the present invention;

Fig. 7 is the schematic diagram of another embodiment of light-source system of the present invention;

Fig. 8 is the front view of an embodiment of colour wheel 703 in Fig. 7;

Fig. 9 is the front view of another embodiment of the first light-dividing device 609 in Fig. 6;

Figure 10 is the schematic diagram of another embodiment of light-source system of the present invention;

Figure 11 is a kind of schematic diagram of the light-source structure be fixedly connected with the first light-dividing device by wavelength conversion layer;

Figure 12 is the schematic diagram of another embodiment of light-source system of the present invention;

Figure 13 A is the sequential chart of wavelength conversion layer 1203 outgoing blue light and gold-tinted;

Figure 13 B and Figure 13 C is respectively the modulating time figure of DMD1211 and DMD1213 to different color light;

Figure 14 is the schematic diagram of the illuminating source of another embodiment of light-source system of the present invention;

Figure 15 is the structural representation of the illuminating source group in the embodiment shown in Figure 14;

Figure 16 is the schematic diagram of the another embodiment of light-source system of the present invention;

Figure 17 A is the color sequential chart of the light-source system emergent light shown in Figure 16;

Figure 17 B and Figure 17 C is respectively the modulating time figure of DMD1209 and DMD1211 to different color light;

Figure 18 is the schematic diagram of the another embodiment of light-source system of the present invention;

Figure 19 is an embodiment of the front view of filtering apparatus in the light-source system shown in Figure 18;

Figure 20 is the modulation timing figure of lighting timings figure and two DMD of two light sources of the light-source system shown in Figure 18;

Figure 21 is another embodiment of the front view of filtering apparatus in the light-source system shown in Figure 18;

Figure 22 is the schematic diagram of the another embodiment of light-source system of the present invention;

Figure 23 is the front view of the filtering apparatus in the light-source system shown in Figure 22;

Figure 24 is the schematic diagram of the illuminating source of another embodiment of light-source system of the present invention;

Figure 25 is the modulation timing figure of lighting timings figure and two DMD of three light sources of the light-source system shown in Figure 24;

Figure 26 is the schematic diagram of the illuminating source of another embodiment of light-source system of the present invention;

Figure 27 is the modulation timing figure of lighting timings figure and two DMD of four light sources of the light-source system shown in Figure 26;

Figure 28 is the schematic diagram of the illuminating source of another embodiment of light-source system of the present invention;

Figure 29 is an embodiment of the front view of wavelength conversion layer in the light-source system shown in Figure 28;

Figure 30 is a kind of work schedule of the light-source system shown in Figure 28;

Figure 31 is the schematic diagram of the illuminating source of another embodiment of light-source system of the present invention;

Figure 32 is the structural representation of an embodiment of light-source system of the present invention;

Figure 33 is the structural representation of another embodiment of light-source system of the present invention.

Embodiment

Invention thinking of the present invention comprises: by light-emitting device sequentially outgoing first light and the second light, first light is divided into the two bundle different wavelength range light along different propagated by beam splitting system, like this, in outgoing two different wavelength range light to two spatial light modulators respectively of a certain period, at least part of light of another period outgoing second light, in these two spatial light modulators, is modulated to make not share the same light to three beams by two spatial light modulators; Meanwhile, ruddiness and green glow can also be become by the yellow Stimulated Light light splitting produced that the yellow fluorescent powder with higher light conversion efficiency is stimulated, thus avoid using the red light fluorescent powder that light conversion efficiency is lower to produce ruddiness, to improve the efficiency of light-source system.

As shown in Figure 1, Fig. 1 is an object lesson of the yellow spectrum that yellow fluorescent powder produces.As can be seen from Figure, the spectrum of the gold-tinted that fluorescent powder produces is wider, covers the spectrum of green glow and the spectrum of ruddiness.Therefore, gold-tinted light splitting can be become green glow and ruddiness.For ease of describing, the spectrum of hereafter mentioned gold-tinted all covers red color light component and green color components, and gold-tinted can become along the ruddiness of different propagated and green glow through filtering apparatus light splitting.

Below in conjunction with drawings and embodiments, the embodiment of the present invention is described in detail.

Embodiment one

Refer to Fig. 2, Fig. 2 is the schematic diagram of an embodiment of light-source system of the present invention.The light-source system 200 of this embodiment comprises light-emitting device 1, beam splitting system 2, first spatial light modulator 211 and second space photomodulator 213.

Light-emitting device 1 comprises for generation of the excitation source 201 of exciting light, wavelength conversion layer 203 and the first drive unit 205.Wavelength conversion layer 203 comprises the first subregion and the second subregion, and this first subregion is provided with first wave length transition material, for absorbing exciting light and outgoing first light; This second subregion is provided with photic zone, and for transmission exciting light, this exciting light is the second light.In the present embodiment, excitation source 201 is for generation of blue excitation light.Excitation source 201 is preferably LASER Light Source, also can be LED or other solid state light emitters.The first subregion on wavelength conversion layer 203 is provided with yellow fluorescent powder, and for absorbing exciting light and producing yellow Stimulated Light, this is the first light; Second subregion is photic zone, and for transmit blue, this is the second light.Wavelength conversion layer 203 is in the form of annular discs, and the different subregions on wavelength conversion layer are along this this disk circumference distribution.

First drive unit 205 is for driving wavelength conversion layer 203, the hot spot that exciting light is formed on wavelength conversion layer 203 acts on wavelength conversion layer 203 by predefined paths, to make this exciting light sequentially be radiated on the first subregion and the second subregion, to make the first light and the sequentially outgoing of the second light.In the present embodiment, the first drive unit 205 is motor, for driving wavelength conversion layer 203 periodic rotary.

Beam splitting system 2 is divided into the first range of wavelength light along the first optical channel and the second optical channel outgoing and the second range of wavelength light for the first light of selfluminous device 1 in future; Also for future selfluminous device 1 at least part of light of the second light along the first optical channel outgoing.First spatial light modulator 211 is for modulating the light of beam splitting system 2 along the first optical channel outgoing.Second space photomodulator 213 is for modulating at least part of light of beam splitting system 2 along the second optical channel outgoing.The light modulated through the first spatial light modulator 211 and second space photomodulator 213 carries out conjunction light and enters view field.

In the present embodiment, gold-tinted light splitting is become green glow by beam splitting system 2, i.e. the first range of wavelength light, and ruddiness, i.e. the second range of wavelength light.For being described clearly, in following citing, when first smooth gold-tinted light splitting becomes green glow and ruddiness, wherein the first range of wavelength light and the second range of wavelength light are not necessarily green glow and ruddiness respectively, these two kinds of scope light are a relative concept just, and the first range of wavelength light and the second range of wavelength light also can be ruddiness and green glow respectively.

First spatial light modulator 211 is for modulating the blue light of sequential and green glow, and second space photomodulator 213 is for modulating ruddiness.Because the conversion efficiency of yellow fluorescent powder is higher, and blue light is directly produced by luminescent device, therefore produces three primary colours by blue-light excited yellow fluorescent powder and makes the efficiency of light source higher.

Concrete example, beam splitting system 2 comprises the combination of TIR (Total Internal Reflection, total internal reflection) prism 207 and 209.These two prisms are triangulo column, and wherein the side of the first prism 207 is 207a, 207b and 207c, and the side of the second prism 209 is 209a, 209b and 209c; Wherein the side 207c of the first prism 207 and side 209c of the second prism 209 connects.

The Stimulated Light 23 of wavelength conversion layer 203 outgoing enters this prism from the side 207b of the first prism 207, and be totally reflected on the 207a of side, after the 207c transmission of side, enter the second prism 209 from the side 209c transmission of the second prism 209 and arrive the 209a of side.Side 209a is coated surface, and it is coated with filter coating, this filter coating transmit red light, and reflect blue and green glow.Sequential produce blue light and green glow through coated surface 209a reflect after be totally reflected on the 209c of side again, and on the 209b of side transmission to enter the first spatial light modulator 211 from the first optical channel.Blue light after modulation and green glow with the incident side 209b of another angle and transmission, and are totally reflected on the 209c of side, then 209c transmission from the side going out from the first prism 207 transmission after coated surface 209a reflection.And ruddiness enters second space photomodulator 213 from the second optical channel after coated surface 209a transmission.Ruddiness after modulation, successively from the second prism 209 and the first prism 207 transmission, is combined into a branch of light beam with the green glow after modulated.

Spatial light modulator can be DMD, also can be the spatial light modulator of the other types such as liquid crystal.For convenience of description, all DMD is adopted as an example in the examples below.

As shown in Figure 3A, Fig. 3 A is a kind of embodiment of the sequential chart of wavelength conversion layer 203 emergent light.In the present embodiment, the first subregion on wavelength conversion layer 203 accounts for 270 degree, and the second subregion accounts for 90 degree.The input path entering exciting light from the second subregion of wavelength conversion layer 203 starts, and within the cycle T time that wavelength conversion layer 203 rotates, the course of work of light-source system is as follows.In front 0.25T, wavelength conversion layer 203 outgoing blue light, in rear 0.75T, wavelength conversion layer 203 outgoing gold-tinted.Accordingly, in front 0.25T, DMD 211 is for modulating blue light, and DMD 213 is not for modulated beam of light.In rear 0.75T, DMD 211 is for modulating green glow, and DMD 213 is for modulated red light.As shown in Fig. 3 B and Fig. 3 C, Fig. 3 B and Fig. 3 C is respectively a kind of embodiment of the modulating time figure of DMD 211 and DMD 213 pairs of different color lights.In this case, in each cycle T, ruddiness and green glow are utilized all entirely, make the utilization of light source the most efficient.But this may not be actual conditions, because the chromaticity coordinates of this white light that this three primary colours light may be caused to mix and predetermined color coordinate have deviation.In practice, can make it to reach satisfied by the chromaticity coordinates utilizing the length of these two DMD to the modulating time of different colours light to control white light.Such as, in the present embodiment, if ruddiness too much causes the chromaticity coordinates of white light partially red, then the modulating time of control DMD 213 can shorten, make the ruddiness in certain hour section be invalid light.As shown in Figure 4, Fig. 4 is DMD213 another embodiment to the modulating time figure of ruddiness.In the diagram, in each cycle T, the hindfoot portion of ruddiness is rejected.In practice, also the leading portion of ruddiness can be given up, or one end of centre or several sections are given up, this is all easy understand.

In addition, the just citing of above first subregion and the ratio shared by the second subregion, does not limit its actual ratio.In practice, the proportion of the first subregion and the second subregion can be decided according to actual needs.

In the present embodiment, light-emitting device sequentially outgoing first light and the second light, and the first light is divided into the two bundle different wavelength range light along different propagated by beam splitting system, like this, in outgoing two different wavelength range light to two spatial light modulators respectively of a certain period, at least part of light of another period outgoing second light, in these two spatial light modulators, is modulated to make not share the same light to three beams by two spatial light modulators.

In practice, the optical filtering curve on the coated surface 209a in the TIR prism 209 in beam splitting system 2 also can be transmit green and blue light, and reflect red, in this case, DMD 211 is for modulated red light, and DMD 213 is for modulating green glow and blue light; Or the optical filtering curve on coated surface 209a changes transmit green into, and reflect red and blue light; Then DMD 211 is for modulated red light and blue light, and DMD 213 is for modulating green glow.The optical filtering curve of coated surface 209a can be designed according to actual needs in practice.

The light path of above Stimulated Light in these the two pieces of TIR prisms only example enumerated, not other usages of restricted T IR prism for convenience of description.

In the above embodiments, use two pieces of prisms to realize the conjunction light of the light splitting of green color components and red color light component in gold-tinted and the light beam after two spatial light modulator modulation simultaneously.In practice, light splitting optical filter also can be used to carry out light splitting to gold-tinted, and use optical filter to carry out conjunction light to the light beam after its modulation in the light path rear end of two DMD.

Embodiment two

As shown in Figure 5, Fig. 5 is the schematic diagram of another embodiment of light-source system of the present invention.In the present embodiment, light-source system 500 comprises light-emitting device 1, beam splitting system 2, first spatial light modulator 511 and second space photomodulator 513.Light-emitting device 1 comprises excitation source 501, wavelength conversion layer 503 and the first drive unit 505.

The present embodiment and difference part embodiment illustrated in fig. 2 comprise:

Beam splitting system 2 comprises optical filter 509 and catoptron 507.Optical filter 509 is for receiving gold-tinted 53 and the blue light 55 of wavelength conversion layer 503 sequentially outgoing, and the green glow 53a in transmit blue 55 and gold-tinted 53 is from the first optical channel outgoing to DMD511, and the ruddiness 53b in reflect yellow 53 is to catoptron 507, catoptron 507 reflect red 53b is from the second optical channel outgoing to DMD513.

Preferably, light-source system 500 also comprises and is arranged at optical filter on the emitting light path of DMD511 and DMD513 515 and catoptron 517 respectively.Catoptron 517 for by the blue light of sequential after DMD511 modulation and green reflection to optical filter 515.Optical filter 515 for reflect from the blue light of catoptron 517 and green glow and transmission from the ruddiness of DMD513, be combined into light beam with light beam DMD 511 and DMD513 being modulated outgoing.Being understandable that, in other embodiments, can, by arranging DMD 511 and the rising angle of DMD 513, making the two-beam of DMD511 and DMD513 difference outgoing converge as light beam; In addition, in some application scenario, the two-beam of DMD511 and DMD513 difference outgoing also can not be needed to converge as light beam, and therefore catoptron 517 and optical filter 515 are omissible.

Embodiment three

Refer to Fig. 6, Fig. 6 is the schematic diagram of another embodiment of light-source system of the present invention.In the present embodiment, light-source system 600 comprises light-emitting device 1, beam splitting system 2, first spatial light modulator 611 and second space photomodulator 613.Light-emitting device 1 comprises excitation source 601, wavelength conversion layer 603 and the first drive unit 605.

The present embodiment and difference part embodiment illustrated in fig. 5 comprise:

Beam splitting system 2 comprises the first light-dividing device 609, second drive unit 607 and first control device (not shown).For improving the utilization factor of the emergent light of light-emitting device 1, light-source system 600 also comprises the collecting lens 615 in the light path that is arranged between light-emitting device 1 and beam splitting system 2, for collecting gold-tinted 63 and the blue light 65 of light-emitting device sequentially outgoing, and the light of collection is relayed to the first light-dividing device 609.First light-dividing device 609 is in the form of annular discs, and is circumferentially divided into the first section and the second section.Second drive unit 607 rotates for driving the first light-dividing device, and the first section and the second section are sequentially on the emitting light path of light-emitting device 1.First control device controls the rotation of the first drive unit 605 and the second drive unit 607, make the first light-dividing device 609 and wavelength conversion layer 603 synchronous axial system, the first light is positioned to make the first section, on the emitting light path of i.e. gold-tinted 63, second section is positioned at the second light, i.e. on the emitting light path of blue light 65.

The first section on first light-dividing device 609 is used for green glow in transmission gold-tinted 63 ruddiness from the second optical channel outgoing to DMD 613 and reflect yellow 63 from the first optical channel outgoing to DMD611, and the second section is used for reflect blue 65 from the first optical channel outgoing to DMD 611.Certainly, in practice, the first section reflect red can also be made and transmit green; Or the second section also can transmissive portion blue light reflecting part blue light, and wherein this two bundles blue light of this transmittance and reflectance can be modulated by DMD 611 and DMD 613 respectively, also only can modulate that this is two intrafascicular wherein a branch of.

Embodiment four

Refer to Fig. 7, Fig. 7 is the schematic diagram of another embodiment of light-source system of the present invention.In the present embodiment, light-source system 700 comprises light-emitting device 1, beam splitting system 2, first spatial light modulator 711 and second space photomodulator 713.Light-emitting device 1 comprises excitation source 701, wavelength conversion layer 703B and the first drive unit 705.Beam splitting system 2 comprises the first light-dividing device 703A and light directing arrangement 3.

The present embodiment and difference part embodiment illustrated in fig. 6 comprise:

In the present embodiment, wavelength conversion layer 703B is fixedly connected with the first light-dividing device 703A, is co-located on colour wheel 703.As shown in Figure 8, Fig. 8 is the front view of an embodiment of colour wheel 703 in Fig. 7.Colour wheel 703 is provided with two to arrange with one heart and mutually nested circle ring area 703A and 703B, wherein annulus 703A is light splitting district, i.e. the first light-dividing device; Annulus 703B is wavelength-converting region, i.e. wavelength conversion layer.Light splitting district 703A comprises the first section S1, for the outgoing of transmit green to the first optical channel, and the outgoing of reflect red to the second optical channel; Light splitting district 703A also comprises the second section S2, for the outgoing of transmit blue to the first optical channel.Wavelength-converting region 703B comprises the first subregion W1, is provided with yellow wavelengths transition material, and for generation of yellow Stimulated Light, this subregion is 180 degree with the center of the first section S1 this ring-type relative in light splitting district 703A and arranges; Also comprise the second subregion W2, be provided with photic zone, for transmit blue, this subregion is 180 degree with the center of the second section S2 this ring-type relative in light splitting district 703A and arranges.First drive unit 705 rotates for driving colour wheel 703, and the first subregion W1 and the second subregion W2 is sequentially positioned on the emitting light path of light-emitting device 1.

Light directing arrangement 3 is for guiding to the first section S1 on the first light-dividing device 703A and the second section S2 respectively by the sequential light of the first subregion W1 on wavelength conversion layer 703B and the second subregion W2 outgoing.Specific explanations is as follows.

In the present embodiment, light directing arrangement 3 comprises lens 707, catoptron 709 and 715.In the one-period T that colour wheel 703 rotates, within the front t1 time, the exciting light 71 that excitation source 701 produces incides the first subregion W1 on the 703B of wavelength-converting region and outgoing gold-tinted, emergent light 73 is from the side outgoing of wavelength-converting region 703B exciting light dorsad, and reflected by catoptron 709 and 715 successively after lens 707 are collected and be incident to 45 degree on the first section S1 on light splitting district 703A, green color components in gold-tinted and red color light component are respectively through the first section S2 transmittance and reflectance and respectively along the first optical channel outgoing to DMD 711 with along the second optical channel outgoing to DMD713.

In the rear t2 time, exciting light 71 incides the second subregion W2 and outgoing blue light, guides and is incident on the second section S2 with miter angle, after transmission, be incident to DMD 711 from the second optical channel through light directing arrangement 3.The hot spot A that exciting light 71 is formed on light splitting district 705A and the line of hot spot B formed on the 703B of wavelength-converting region are through the ring heart.Certainly, in practice, the incident angle that emergent light 73 enters light splitting district 703A may not be 45 degree but other angles being greater than 0, and this can design according to actual needs.

Like this, compare the light-source system shown in Fig. 6, wavelength conversion layer and the first light-dividing device can synchronous axial system, and this both synchronism is better, and does not need control device synchronous to control it, reduces cost and light source volume.Embodiment five

Refer to Fig. 9, Fig. 9 is the front view of another embodiment of the first light-dividing device 609 in Fig. 6.With the light-source system shown in Fig. 6 unlike, the first light-dividing device 609 in the present embodiment comprises three sections.First section R1 is used for the outgoing of transmit red light to the first optical channel, and the outgoing of reflect green light to the second optical channel.Second section R2 is used for the outgoing of transmit green to the first optical channel, and the outgoing of reflect red to the second optical channel.3rd section is used for the outgoing of transmissive portion blue light to the first optical channel, and reflecting part blue light to the second optical channel outgoing.

Accordingly, first control device, for controlling the first light-dividing device 609, makes the first section R1 and the second section R2 be positioned on the emitting light path of the first light, on the emitting light path being positioned at the second light of the 3rd section R3.Specifically, in the T of outgoing gold-tinted, in forward part time t1, the first section R1 is positioned on the emitting light path of gold-tinted, and in rear section time t2, the second section R2 is positioned on the emitting light path of gold-tinted, and when outgoing blue light, the 3rd section R3 is positioned on the emitting light path of blue light.

In the present embodiment, rotate at wavelength conversion layer 603 and produce Y (yellow, yellow), B (blue, blue) in the one-period of sequence light, DMD 611 receives G (green successively, green), R (red, red), B sequence light, DMD 613 receives R, G, B sequence light successively.Therefore, compare above each embodiment, in the present embodiment, two DMD can receive three primary colours sequence light separately, and then each DMD can each self-modulation image, and when section in office, two DMD are in running order, compare above embodiment and can utilize DMD more fully.

It is easily understood that also wavelength conversion layer can be fixedly connected with the first light-dividing device in the present embodiment.Accordingly, the first section S1 in light splitting district in light-source system shown in Fig. 7 on colour wheel 703 need be divided into the first subarea and the second subarea, wherein the first subarea is used for the outgoing of transmit red light to the first optical channel to DMD 611, and the outgoing of reflect green light to the second optical channel is to DMD 613; Second subarea is used for the outgoing of transmit green to the first optical channel to DMD 613, and the outgoing of reflect red to the second optical channel is to DMD 611.

Embodiment six

Light-source system shown in Fig. 7 just wherein a kind of structure that wavelength conversion layer is fixedly connected with the first light-dividing device, other light channel structures many in addition in practice.Refer to Figure 10, Figure 10 is the schematic diagram of another embodiment of light-source system of the present invention.In the present embodiment, light-source system 1000 comprises light-emitting device 1, beam splitting system 2, first spatial light modulator 1011 and second space photomodulator 1013.Light-emitting device 1 comprises excitation source 1001, wavelength conversion layer 1003B and the first drive unit 1005.Beam splitting system 2 comprises the first light-dividing device 1003A and light directing arrangement 3.Wavelength conversion layer 1003B is fixedly connected with the first light-dividing device 1003A, is co-located on colour wheel 1003.

The present embodiment and difference part embodiment illustrated in fig. 7 comprise:

Wavelength-converting region 1003B is set to reflective, and namely the light path of the incident light of wavelength-converting region 1003B and the light path of emergent light are positioned at its same side.And the first section S1 on the 1003B of wavelength-converting region and the first subregion W1 on light splitting district 1003A is 0 degree arranges, the second subregion W2 on the second section S2 and light splitting district 1003A is 0 degree and arranges, and namely light splitting region and the wavelength conversion region corresponding with it are disposed adjacent.

Light directing arrangement 3 comprises catoptron 1007, collecting lens 1009 and 1015 with through hole.

In the present embodiment, excitation source 1001 is LASER Light Source, for generation of blue laser 101.Catoptron 1007 is arranged on the emitting light path of blue laser 101.Because the optical extend of laser is smaller, and the optical extend of Stimulated Light is larger, make blue laser 101 pass from this through hole and enter into the 1003B of wavelength-converting region after collecting lens 1009, and the sequence light of wavelength-converting region 1003B outgoing major part after collecting lens 1009 is collected is reflexed to light splitting district 1003A by catoptron 1007.On the hot spot wherein light splitting district 1005A formed and wavelength-converting region 1005B, the hot spot that formed is positioned in the same radius on colour wheel 1005.Compare the light-source system shown in Fig. 8, the light path of the light-source system in the present embodiment is compacter.

Embodiment seven

Refer to Figure 11, Figure 11 is the schematic diagram of the another kind of light-source structure be fixedly connected with the first light-dividing device by wavelength conversion layer.In the present embodiment, light-source system 1100 comprises light-emitting device, beam splitting system 2, first spatial light modulator 1111 and second space photomodulator 1113.Light-emitting device comprises excitation source 1101, wavelength conversion layer 1103B and the first drive unit 1105.Beam splitting system 2 comprises the first light-dividing device 1103A and light directing arrangement 3.Wavelength conversion layer 1103B is fixedly connected with the first light-dividing device 1103A, is co-located on colour wheel 1003.

The present embodiment and difference part embodiment illustrated in fig. 10 comprise:

Wavelength-converting region 1103A and light splitting district 1103B are not two mutually nested circle ring areas.Be provided with a round platform 1103C in the central area of colour wheel 1103, wavelength conversion layer district 1103B is arranged on the side of this round platform 1103C, and light splitting district 1103A is arranged on a circle ring area of colour wheel 1103.Blue laser 111 sequentially through after the through hole of catoptron 1107 and collecting lens 1109, incides on one of them section on the 1103B of wavelength-converting region.And the sequence light 113 of wavelength-converting region 1103B outgoing major part after collecting lens 1109 is collected is reflexed to subregion corresponding with the section at hot spot place on the 1103B of wavelength-converting region on light splitting district 1103A by catoptron 1107.

Compare the light-source system shown in Figure 10, in the present embodiment due to wavelength-converting region 1103B and light splitting district 1103A be separated by comparatively far away, the angle reflected between the sequence light 113 after front and reflection through catoptron 1107 is comparatively large, is easier to separately light path.

In the embodiment above, the second subregion on wavelength conversion layer also can be provided with second wave length transition material, for absorbing exciting light and outgoing second light.Concrete example, excitation source is for generation of UV light.First subregion of wavelength conversion layer is provided with yellow fluorescent powder, for absorbing UV light and producing gold-tinted; Second subregion is provided with blue colour fluorescent powder, and for absorbing UV light and producing blue light, this blue light is the second light.

Embodiment eight

The schematic diagram of the light-source system of the present embodiment is substantially the same with the schematic diagram of the light-source system in above embodiment, unlike, second light is also divided into respectively along the 3rd range of wavelength light and the 4th range of wavelength light of the first optical channel and the second optical channel outgoing by beam splitting system in the present embodiment, then the first spatial light modulator is used for modulating the first range of wavelength light of the first light along the first optical channel outgoing and the 3rd range of wavelength light of the second light, and second space photomodulator is used for modulating the second range of wavelength light of the first light along the second optical channel outgoing, or also for modulating the 4th range of wavelength light of the second light along the second optical channel outgoing.

With Fig. 5 for example, excitation source 501 is for generation of UV light.First subregion of wavelength conversion layer 503 is provided with yellow fluorescent powder, for absorbing UV light and producing gold-tinted; Second subregion is provided with blue colour fluorescent powder, and for absorbing UV light and producing blue light, this blue light is the second light.Because the spectrum of the blue light of blue colour fluorescent powder generation is wider, cover the part range of green spectrum.Optical filter 505 in beam splitting system is set to the second light of the second subregion generation and blue light light splitting to become the 3rd range of wavelength light and the 4th range of wavelength light, i.e. the second blue light and the second green glow simultaneously.Like this, the second blue light of generation and the spectrum of the second green glow narrower, excitation is higher.

Accordingly, when the blue Stimulated Light light splitting produced by the second subregion becomes the second blue light and the second green glow, in the beam splitting system of the light-source system shown in Fig. 2, coated surface 209a in second prism 209 can be set to simultaneously the blue light ingredient in reflection blue Stimulated Light and transmit green composition, or transmit blue composition reflect green light composition.In the beam splitting system of the light-source system shown in Fig. 5, optical filter 505 can be set to the second blue light in simultaneously reflection blue Stimulated Light and transmission second green glow, or transmission second blue light reflect the second green glow.In more than describing, for the same light-dividing device be in beam splitting system to the first light and the second smooth light splitting.

In practice, in beam splitting system also can respectively with two light-dividing devices respectively to the first light and the second smooth light splitting.As shown in figure 12, Figure 12 is the schematic diagram of another embodiment of light-source system of the present invention.In the present embodiment, light-source system 1200 comprises light-emitting device 1, beam splitting system 2, first spatial light modulator 1211 and second space photomodulator 1213.Light-emitting device 1 comprises excitation source 1201, wavelength conversion layer 1203 and the first drive unit 1205.

Beam splitting system 2 comprises optical filter 1221,1209 and 1207, also comprises catoptron 1219.Optical filter 1221 is positioned in the light path of light-emitting device 1 outgoing sequential light, the second green glow 65a for the second blue light 65b in reflection blue Stimulated Light and in transmitting blue Stimulated Light and yellow Stimulated Light 63.

Optical filter 1209 is positioned on the emitting light path of optical filter 1221 transmitted light beam, the ruddiness 63b for the second green glow 65a in transmitting blue Stimulated Light and the first green glow 63a in yellow Stimulated Light 63 and in reflect yellow Stimulated Light 63.Therefore, through the second green glow 65a of optical filter 1209 transmission and the first green glow 63a along the first optical channel outgoing to DMD 1211.Through optical filter 1209 reflect ruddiness 63b again through optical filter 1207 reflect after along the second optical channel outgoing to DMD1213, and through optical filter 1221 reflect the second blue light 65b respectively through catoptron 1219 reflect and optical filter 1207 transmission after along the second optical channel outgoing to DMD 1213.

When the second blue light 65b obtained after blue light 65 light splitting and the second green glow 65a is all for modulating, because two DMD increase for the color of modulating, the colour gamut that two DMD can be modulated is larger.Accordingly, wavelength conversion layer 1203 and DMD1211,1213 working timing figure as shown in figure 13.Figure 13 A is the sequential chart of wavelength conversion layer 1203 outgoing blue light and gold-tinted.Within the cycle T time that wavelength conversion layer 1203 rotates, in front 0.25T, wavelength conversion layer 1203 outgoing blue light, in rear 0.75T, wavelength conversion layer 1203 outgoing gold-tinted.As shown in Figure 13 B and Figure 13 C, Figure 13 B and Figure 13 C is respectively the modulating time figure of DMD1211 and DMD1213 to different color light.Accordingly, in front 0.25T, DMD1211 is for modulating the second green glow, and DMD 1213 is for modulating the second blue light.In rear 0.75T, DMD 1211 is for modulating the first green glow, and DMD 1213 is for modulated red light.

It is easily understood that the second green glow also can be not used in modulation, as long as DMD 1211 does not work when it enters DMD 1211, this part light can not be modulated.

Be all the difference utilizing optical wavelength in above embodiment, use optical filter or filter coating to carry out transmittance and reflectance to carry out light splitting or to close light to light beam.And the light in some light paths is transmitted on a light splitting optical filter or reflected, and can design arbitrarily.Therefore, in all embodiments of the invention, in each light path, different wavelength range light passes through the concrete optical texture of optical filter or filter coating, be all the example enumerated for convenience of description, do not limit and use other utilize light splitting optical filter or filter coating to carry out the optical texture of light path merging or light beam light splitting.

In the present embodiment, wavelength conversion layer 1203 also multiple subregion be can arrange, wherein different subregion different wave length transition material or photic zone are provided with.And the light that at least one subregion, the light beam of outgoing is split into two kinds of different wavelength range is modulated to make these two kinds of different wavelength range light enter respectively in two spatial light modulators.

In the present embodiment, the first subregion and the second subregion also can arrange the material for transformation of wave length producing other color of light, do not limit to above-mentioned yellow fluorescent powder and blue colour fluorescent powder.Material for transformation of wave length may be yet the material that quantum dot, fluorescent dye etc. have wavelength conversion capability, is not limited to fluorescent powder.

Embodiment nine

Refer to Figure 14, Figure 14 is the schematic diagram of the illuminating source of another embodiment of light-source system of the present invention.With above embodiment unlike, in above embodiment, light-emitting device 1 produces sequential light by colour wheel, and light-emitting device 1 reflects different colours light outgoing that LED lamp panel sends to produce sequential light successively by the catoptron rotated in the present embodiment, compare embodiment one, in the present embodiment, adopt catoptron to control cost.

Specifically, light-emitting device 1 comprises illuminating source group 1401, first reflection unit 1405, second reflection unit 1403 and the second drive unit (not shown).

Illuminating source group 1401 comprises the first luminescent device (being yellow fluorescent powder LED 1401a in the present embodiment) and the second luminescent device (being blue-ray LED 1401b in the present embodiment), wherein fluorescent powder LED refers to surface fluorescent powder being coated in LED chip, and the light utilizing LED to send carrys out excitated fluorescent powder and sends fluorescence.Common yellow fluorescent powder LED refers to yellow fluorescent powder to be coated on blue-light LED chip surface, and the blue light launched by blue-ray LED excite generation sodium yellow.Yellow light LED 1401a and blue-ray LED 1401b distributes in the form of a ring, and the direction of yellow light LED 1401a and blue-ray LED 1401b emergent light was all parallel to the central shaft in the center of circle of this ring-type.

Second reflection unit, be a rotation mirror 1403 in the present embodiment, it comprises reflecting surface 1403a, is arranged at the side of the emergent light of illuminating source group 1401, and between the first luminescent device 1401a and the second luminescent device 1401b.

First reflection unit 1405 comprises two reflecting elements, be catoptron in the present embodiment, lay respectively on the emitting light path of the first luminescent device 1401a and the second luminescent device 1401b, for the emergent light of different luminescent device is reflexed to the second reflection unit 1403.

Second drive unit 1403 drives the second reflection unit 1403 to move, and reflecting surface 1403a is placed on the emitting light path of two reflecting elements of the first reflection unit 1405 successively, reflects outgoing successively with the light sent by first, second luminescent device.

In practice, illuminating source group 1401 also can comprise multiple light-emitting element array, is LED array in the present embodiment.Accordingly, reflection unit group 1405 comprises multiple catoptron, is placed in respectively on the emitting light path of the multiple light-emitting element array of light source 1401.

As shown in figure 15, Figure 15 is the structural representation of the illuminating source group 1401 in the present embodiment.Each LED in illuminating source group 1401 is arranged on to rotate on the disk that mirror 1403 is the center of circle, and circumferentially arranges around rotation mirror 1403, and is radially array distribution to rotate centered by mirror 1403.In array distribution radially, for sending the LED of same color of light in LED array, circumferentially in arrangement, yellow fluorescent powder LED 1401a and blue-ray LED 14101b is alternately distributed.

Embodiment ten

Refer to Figure 16, Figure 16 is the schematic diagram of the another embodiment of light-source system of the present invention.Light-source system 1600 comprises light-emitting device 1, beam splitting system 2, first spatial light modulator 1611 and second space photomodulator 1613.

Light-emitting device 1 comprises the first luminescent device, the second luminescent device and first control device (not shown), and wherein the first luminescent device is for generation of the first light, and the second luminescent device is for generation of the second light; First control device is used for the first luminescent device and the second luminescent device alternately being lighted at least part of period, with the first light of outgoing sequential and the second light.

Specifically, the first luminescent device is yellow light LED 11a, and the second luminescent device is blue-ray LED 11b, is respectively used to produce gold-tinted and blue light.First control device is used for the open and close of the luminescent device controlling different colours respectively, blue-ray LED 11b and yellow light LED 11a is alternately lighted, to produce gold-tinted and the blue light of sequential.

In the present embodiment, yellow light LED 11a can be controlled and blue-ray LED 11b lights simultaneously at a certain period first control device.Because the green glow obtained after blue light and gold-tinted light splitting is all modulated in DMD1611, then in this time period that yellow light LED 11a and blue-ray LED 11b lights simultaneously, DMD1611 is used for modulating the conjunction light of blue light and green glow and cyan light, does not then affect for DMD1613.In this time period, due to the mixing of two kinds of light, make DMD 1611 can modulate how a kind of color, the colour gamut that this DMD 1611 can be modulated is larger.

As shown in Figure 17 A, Figure 17 A is the color sequential chart of light-source system 1600 emergent light.In one-period T, within the t1 time, light blue-ray LED, then light-emitting device 1 outgoing blue light; Within the t2 time, light yellow light LED, then light-emitting device 1 outgoing gold-tinted; Within the t3 time, light blue-ray LED and yellow light LED, then the conjunction light of these two kinds of light of light-emitting device 1 outgoing, i.e. white light simultaneously.As shown in Figure 17 B and Figure 17 C, Figure 17 B and Figure 17 C is respectively the modulating time figure of DMD1209 and DMD1211 to different color light.Accordingly, in the t1 time, DMD 1611 is for modulating blue light, and DMD1613 does not work; In the t2 time, DMD1611 is for modulating green glow, and DMD1613 is used for modulated red light; In the t3 time, DMD1611 is for modulating green light, and DMD1613 is used for modulated red light.

But these two kinds of color of light can not be made to light, and owing to only having two DMD in this light-source system, one of them DMD is used for modulating blue light and green glow respectively in the different periods always simultaneously.If yellow light LED 11a and blue-ray LED 11b keeps lighting always simultaneously, then cause there is no blue light and these two kinds of monochromatic light images of green glow, and only have the image of cyan light.

If it is easily understood that the optical filter 1609 in beam splitting system 2 is for transmit red light and reflect green light, then the ruddiness obtained after blue light and gold-tinted light splitting is all modulated in DMD 1611, and green glow is modulated in DMD 1613.Then in this time period that yellow light LED 11a and blue-ray LED 11b lights simultaneously, this DMD 1611 for modulating the conjunction light of blue light and ruddiness and purple light, for DMD 1613 not impact.

Compare above embodiment, the present embodiment can light the luminescent device of different colours simultaneously, make the color of light for modulating more, and then the colour gamut that can modulate is larger.

Embodiment 11

Refer to Figure 18, Figure 18 is the schematic diagram of the another embodiment of light-source system of the present invention.In the present embodiment, light-source system 1800 comprises light-emitting device 1, beam splitting system 2, first spatial light modulator 1811 and second space photomodulator 1813.

The present embodiment and difference part embodiment illustrated in fig. 16 comprise:

Beam splitting system 2 comprises filtering apparatus 1805, for the second drive unit 1806 of driving filtering apparatus to move and first control device (not shown).Filtering apparatus 1805 comprises the first section, the second section and the 3rd section, wherein the first section is used for the first range of wavelength light to the first optical channel outgoing of transmission first light, and reflects the second range of wavelength light to the second optical channel outgoing; Second section is for reflecting the first range of wavelength light to the second optical channel outgoing of the first light, and the outgoing of transmission second range of wavelength light to the first optical channel; 3rd section is used for the outgoing of transmissive portion second light to the first optical channel, and reflecting part second light to the second optical channel outgoing.First control device, for controlling the second drive unit 1806, is positioned on the emitting light path of the first light, on the emitting light path being positioned at the second light at least partly of the 3rd section to make at least part of of the first section and at least part of of the second section successively.

Concrete example, as shown in figure 19, Figure 19 is an embodiment of the front view of filtering apparatus in the light-source system shown in Figure 18.Filtering apparatus 1805 is in the form of annular discs, and each section on it circumferentially distributes on this disk.The first section 1805A on this filtering apparatus 1805 is used for transmissive portion blue light and reflecting part blue light, and the second section 1805B is used for transmit green and reflect red, and the 3rd section 1805C is used for reflect green light and transmit red light.Second drive unit 1806 is motor, for driving filtering apparatus 1805 periodic rotary, is positioned at successively on the emitting light path of light-emitting device 1 to make each section.

As shown in figure 20, Figure 20 is the modulation timing figure of lighting timings figure and two DMD of two light sources of the light-source system shown in Figure 18.In a modulation period T, within the front t1 time, the first section 1805A of filtering apparatus 1805 is positioned on the emitting light path of sequential light, then blue light source 1801 is lighted, and yellow light sources 1802 does not work, then two DMD are for modulating blue light.Within the ensuing t2 time, the second section 1805B of filtering apparatus 1805 is positioned on the emitting light path of sequential light, and yellow light sources 1802 is lighted, and blue light source 1801 does not work, then DMD1811 is for modulating green glow, and DMD1813 is used for modulated red light.Within the ensuing t3 time, the 3rd section 1805C of filtering apparatus 1805 is positioned on the emitting light path of sequential light, and yellow light sources 1802 is lighted, and blue light source 1801 does not work, then DMD1811 is used for modulated red light, and DMD1813 is for modulating green glow.Like this, the three primary colours light of two DMD difference modulation timings can be made.

Embodiment 12

Refer to Figure 21, Figure 21 is another embodiment of the front view of filtering apparatus in the light-source system shown in Figure 18.

In the present embodiment, filtering apparatus 1805 also comprises the 4th section, for reflect blue and transmission gold-tinted, and with the light-source system shown in Figure 18 unlike, the first section 1805A is used for transmit blue and reflect yellow; When the first section 1805A and the 4th section 1805D is positioned on the emitting light path of sequential light, blue light source 1801 and yellow light sources 1802 are lighted simultaneously.Accordingly, in a modulation period T, when the first section of filtering apparatus 1805, the second section, the 3rd section and the 4th section are positioned at the emitting light path of sequential light successively, DMD 1811 modulates blue light, green glow, ruddiness and gold-tinted successively, and DMD 1813 modulates gold-tinted, ruddiness, green glow and blue light successively.In the present embodiment, because the color of modulation adds gold-tinted, the brightness of light-source system is improved.

In the light-source system shown in Figure 18, adopt the different light splitting districts sequential on a blue light source and a corresponding filtering apparatus of yellow light sources to light to be respectively two DMD and provide at least three sequential light, the light that wherein this blue light source produces is split into two bundle blue lights to these two DMD.In practice, also employing two blue light sources can be provided two bundle blue lights to be respectively used to two DMD modulation.Be described as follows.

Embodiment 13

Refer to Figure 22, Figure 22 is the schematic diagram of the another embodiment of light-source system of the present invention.In the present embodiment, light-source system 2200 comprises light-emitting device, beam splitting system, the first spatial light modulator 2211 and second space photomodulator 2213.Light-emitting device comprises the first luminescent device 2201A, the second luminescent device 2202, the 3rd luminescent device 2201B and first control device (not shown).Beam splitting system comprises filtering apparatus 2205, second drive unit 2206, optical filter 2203 and 2204.

The present embodiment and difference part embodiment illustrated in fig. 18 comprise:

Light-emitting device also comprises the 3rd luminescent device, produces the 4th light at least part of period at outgoing second light.In the present embodiment, the 3rd luminescent device is blue light source 2201B.Filtering apparatus 2205 in beam splitting system comprises two sections, the second section on the filtering apparatus 1805 in the light-source system namely shown in Figure 18 and the 3rd section.As shown in figure 23, Figure 23 is the front view of filtering apparatus 2205 in the light-source system shown in Figure 22.Filtering apparatus 2205 comprises the first section 2205A (the second section namely on filtering apparatus 1805), for transmit green and reflect red; Also comprise the second section 2205B (the 3rd section namely on filtering apparatus 1805), for transmit red light and reflect green light.

The gold-tinted (i.e. the first light) that yellow light sources 2202 sends incides on filtering apparatus 2205 at a certain angle, through filtering apparatus 2205 reflect light beam after optical filter 2204 transmission along the first optical channel outgoing to DMD 2211; Through the light beam of filtering apparatus 2205 transmission after optical filter 2203 transmission along the second optical channel outgoing to DMD2213.The light beam (i.e. the second light) that blue light source 2201A sends through optical filter 2204 reflect after after the first optical channel outgoing to DMD 2211.The light beam (i.e. the 4th light) that blue light source 2201B sends through optical filter 2203 reflect after along the second optical channel outgoing to DMD2213.

In a modulation period T, within the front t1 time, first control device closes yellow light sources 2202, and lights blue light source 2201A and 2201B simultaneously, and DMD2211 and 2213 is all for modulating blue light.Within the rear t2 time, first control device is lighted yellow light sources 2202 and is closed blue light source 2201A and 2201B, when at least part of section of the first section 2203A and the second section 2203B is positioned on the emitting light path of gold-tinted successively.DMD 2211 is for modulating ruddiness along the first optical channel successively outgoing and green glow, and DMD 2213 is for modulating green glow along the second optical channel successively outgoing and ruddiness.

In the present embodiment, the light intensity of the blue light modulated in two DMD can be controlled respectively, to adapt to actual needs better.Further, the time span of two blue light outgoing also can be inconsistent, lights in the part-time section that one of them blue light source can be lighted at another blue light source, and the time length specifically lighted can need the amount of blue light to decide according to the DMD corresponding with it.As a same reason, for regulating the amount for the green glow modulated and ruddiness, the lighting time of gold-tinted when the first section 2203A and the second section 2203B lays respectively on the emitting light path of gold-tinted (i.e. the first light) can correspondingly be controlled.It is easily understood that one of them blue light source also can replace to the light-emitting component of other colors, such as cyan light emitting elements, one of them DMD is used for the green light of modulation timing, ruddiness and green glow accordingly.

Be understandable that, the optical filter 2203 and 2204 in the present embodiment in beam splitting system not necessarily, can dispense this two optical filters by the light channel structure changing light-source system.Such as each section on filtering apparatus 2205 is also set to simultaneously transmission second light and the 4th light (being blue light in the present embodiment), and light source 2201A and 2201B is laid respectively at the both sides of filtering apparatus 2205, make the light of light source 2201A outgoing be directly transmitted to DMD2211 after filtering apparatus 2205 transmission, the light of light source 2201B outgoing is directly transmitted to DMD2213 after filtering apparatus 2205 transmission.

Embodiment 14

Refer to Figure 24, Figure 24 is the schematic diagram of the illuminating source of another embodiment of light-source system of the present invention.In the present embodiment, light-source system 2200 comprises light-emitting device, beam splitting system, the first spatial light modulator 2211 and second space photomodulator 2213.

Light-emitting device is used for sequentially outgoing first light, the second light and the 3rd light.Concrete example, light-emitting device comprises yellow light sources 2402A, blue light source 2401 and yellow light sources 2402B, is respectively used to produce gold-tinted 22A, blue light 11 and gold-tinted 22B, i.e. the first light, the second light and the 3rd light; Also comprising first control device 2403, for controlling this three light sources, making light-emitting device sequentially outgoing gold-tinted 22A, blue light 11 and gold-tinted 22B.

The second light that beam splitting system is used in the future selfluminous device is divided into the first sub-light along the first optical channel and the second optical channel outgoing and the second sub-light, also for future selfluminous device the 3rd light be divided into the 5th range of wavelength light along the first optical channel and the second optical channel outgoing and the 6th range of wavelength light.Concrete example, beam splitting system comprises optical filter 2404 and 2405.The optical filtering curve of optical filter 2405 is set to the green color components of transmission gold-tinted, i.e. the first range of wavelength light of the first light and the 5th range of wavelength light of the 3rd light, and reflect red composition, i.e. the second range of wavelength light of the first light and the 6th range of wavelength light of the 3rd light; Also transmissive portion blue light reflecting part blue light, i.e. the first sub-light and the second sub-light.Optical filter 2404 is for transmit blue and reflect yellow.The light that blue light source 2401 and gold-tinted 2402A produce is incident from the both sides of optical filter 2404 respectively, incident from same optical channel to the same side of optical filter 2405 after optical filter 2404 transmittance and reflectance respectively.The light that yellow light sources 2402B produces is incident from the opposite side of optical filter 2405.The light reflected through optical filter 2405 along the first optical channel outgoing to DMD 2411, through the light of optical filter 2405 transmission along the second optical channel outgoing to DMD 2413.

First spatial light modulator (i.e. DMD 2411) is for modulating along the first range of wavelength light of the first optical channel sequentially outgoing, the first sub-light and the 5th range of wavelength light beam splitting system.Second space photomodulator (i.e. DMD 2413) is for modulating along the second range of wavelength light of the second optical channel sequentially outgoing, the second sub-light and the 6th range of wavelength light described beam splitting system.

As shown in figure 25, Figure 25 is the modulation timing figure of lighting timings figure and two DMD of three light sources of the light-source system shown in Figure 24.In a modulation period T, within the front t1 time, blue light source 2401 is lighted, and two yellow light sources do not work, then two DMD are all for modulating blue light.Within the ensuing t2 time, yellow light sources 2402B lights, and all the other two light sources do not work, then DMD2411 is for modulating green glow, and DMD2413 is used for modulated red light.Within the ensuing t3 time, yellow light sources 2502A lights, and all the other two light sources do not work, then DMD2411 is used for modulated red light, and DMD2413 is for modulating green glow.Like this, the three primary colours light of two DMD difference modulation timings can just be made.

In the present embodiment, also can in a modulation period T joining day section t4, within this time, three light sources are lighted simultaneously, then two DMD are for modulating the conjunction light of blue light and gold-tinted, i.e. white light.Like this, the brightness of light-source system can be improved.In the present embodiment, the ratio of t1, t2, t3 and t4 can need to adjust according to the actual ratio of different colours.

Compare above embodiment, the brightness that the brightness by controlling two yellow light sources respectively in the present embodiment carrys out ruddiness and the green glow received two DMD respectively adjusts, and decreases the use to the second drive unit that filtering apparatus drives; Meanwhile, light due to light source the rotation synchronised do not needed with filtering apparatus, light in the sequential controlling Different Light and be more prone to, also convenient to the amount of different colours optical modulation at adjustment DMD.

It is easily understood that one of them yellow light sources in the present embodiment also can replace to the light-emitting component of the 3rd color.Corresponding, the optical filtering curve for the optical filter 2405 of light splitting is also set to the light of a wavelength coverage of transmission the 3rd color of light simultaneously and reflects another wavelength coverage light of the 3rd color of light.

In the present embodiment, the colour wheel that can also be rotated by excitation in light-emitting device and produce three beams sequential light, and also can carry out light splitting to realize to this three beams sequential light by the filter wheel rotated with colour wheel simultaneously in beam splitting system.Above embodiment is described these devices, only needs simply to combine the light-emitting device in different embodiment and beam splitting system, does not repeat them here.

Embodiment 15

Refer to Figure 26, Figure 26 is the schematic diagram of the illuminating source of another embodiment of light-source system of the present invention.In the present embodiment, light-source system 2600 comprises light-emitting device, beam splitting system, the first spatial light modulator 2211 and second space photomodulator 2213.Light-emitting device comprises blue light source 2601A and 2601B, yellow light sources 2602A and 2602B, first control device 2603.Beam splitting system comprises optical filter 2404 and 2405.

The present embodiment and difference part embodiment illustrated in fig. 24 comprise:

Light-emitting device in the present embodiment also comprises blue light source 2601B, and blue light source 2601A is respectively two DMD and provides blue light.

Compare the optical filter 2405 carrying out light splitting in the light-source system shown in Figure 24 for the light beam produced two yellow light sources, the optical filter 2605 that light beam for producing two yellow light sources in the present embodiment carries out light splitting is set to transmit green and blue light and reflect red, and the blue light that produces of blue light 2601A after optical filter 2605 transmission along the second optical channel outgoing to DMD 2613.Meanwhile, optical filter 2606 is positioned on the emitting light path of optical filter 2605 folded light beam, reflects other light for transmit blue.The ruddiness of sequential reflected through optical filter 2605 and green glow after optical filter 2606 reflects along the first optical channel outgoing to DMD 2611, blue light source 2501B after optical filter 2606 transmission along the first optical channel outgoing to DMD 2611.

As shown in figure 27, Figure 27 is the modulation timing figure of lighting timings figure and two DMD of four light sources of the light-source system shown in Figure 26.In a modulation period T, within the front t1 time, first control device controls two blue light sources and lights, and two yellow light sources do not work, then two DMD are for modulating blue light.Within the ensuing t2 time, yellow light sources 2602B lights, and its excess-three light source does not work, then DMD2611 is for modulating green glow, and DMD2613 is used for modulated red light.Within the ensuing t3 time, yellow light sources 2602A lights, and its excess-three light source does not work, then DMD2611 is used for modulated red light, and DMD2613 is for modulating green glow.Like this, the three primary colours light of two DMD difference modulation timings can just be made.

It is easily understood that one of them blue light source also can only be lighted in the part-time section of time period t 1, the time length wherein specifically lighted can the amount of blue light according to actual needs control.

Preferably, in a modulation period T, also can joining day section t4, within this time, four light sources are lighted simultaneously, then two DMD are all for modulating the conjunction light of blue light and gold-tinted, i.e. white light.Like this, the brightness of light source can be improved.In the present embodiment, the ratio of t1, t2, t3 and t4 can need to adjust according to the actual ratio of different colours.

Compare the light-source system shown in Figure 24, in the present embodiment, adopt two blue light sources, the light intensity of blue light of modulating in two DMD and the length of modulating time can be controlled respectively, to adapt to actual needs better.

In the embodiment above, the optical filtering curve of each optical filter, the sequential control of each light source, the modulation timing of DMD and concrete light channel structure etc. are not limited to above citing, and the art personnel can according to specific design of the present invention.

Embodiment 16

Refer to Figure 28, Figure 28 is the schematic diagram of the illuminating source of another embodiment of light-source system of the present invention.In the present embodiment, light-source system 2800 comprises light-emitting device, beam splitting system, the first spatial light modulator 2811 and second space photomodulator 2813.Light-emitting device comprises excitation source 2801 and 2802, wavelength conversion layer 2805, first drive unit 2806 and first control device (not shown).Beam splitting system comprises optical filter 2814 and catoptron 2812.

In light-source system shown in Figure 24, light-emitting device is lighted four light sources by sequential and is produced sequential light, and the light-emitting device in the present embodiment adopts colour wheel to produce sequential light in conjunction with sequential point bright light source two kinds of modes, is described as follows.

Wavelength conversion layer 2805 comprises the first subregion 2805A, the second subregion 2805B, the 3rd subregion 2805C and the 4th subregion 2805C, be respectively arranged with first, second, third and fourth functional material, be respectively used to absorb exciting light and produce first, second, third, fourth light.In the present embodiment, two excitation sources are UV light, and first and the 3rd subregion is provided with yellow wavelengths transition material, and second and the 4th subregion is provided with blue light wavelength transition material.In section, the first subregion and the 3rd subregion lay respectively on the emitting light path of the exciting light that two excitation sources produce at one time, and in another time period, the second subregion and the 4th subregion lay respectively on the emitting light path of the exciting light that two excitation sources produce.

First drive unit 2806 is for driving wavelength conversion layer 2805, and the hot spot that exciting light is formed on wavelength conversion layer 2805 acts on this wavelength conversion layer 2806 by predefined paths.Simultaneously, first control device is for controlling two excitation sources, at least part of period when the first subregion 2805A and the 3rd subregion 2805C is positioned in the light path of two bundle exciting lights is alternately lighted, and when the second subregion 2805B and the 4th subregion 2805D is positioned in the light path of two bundle exciting lights, at least part of period lights simultaneously.

Following concrete example illustrates.As shown in figure 29, Figure 29 is an embodiment of the front view of wavelength conversion layer in the light-source system shown in Figure 28.In the present embodiment, wavelength conversion layer 2805 is in the form of annular discs, and the first subregion 2805A and the 3rd subregion 2805C is 180 degree of settings, and the second subregion 2805B and the 4th subregion 2805D is 180 degree of settings.First drive unit 280 is motor, for driving wavelength conversion layer periodic rotary.The line of two bundle exciting lights hot spot of each self-forming on wavelength conversion layer 2805, through the center of circle of disk, makes the subregion arranged in 180 degree at one time lay respectively on the emitting light path of the exciting light that these two excitation sources produce.

In the present embodiment, wavelength conversion layer 2805 is set to reflective, and namely the light path of exciting light and Stimulated Light is positioned at the same side of this wavelength conversion layer 2805.By placing catoptron or be coated with reflectance coating to realize in the side of wavelength conversion layer 2805 excitation source dorsad, this is known technology, does not repeat them here.

The emitting light path of wavelength conversion layer 2805 is provided with two reflex housings 2803 and 2804, is respectively used to collect the Stimulated Light that excitation source 2801 and excitation source 2802 excitation wavelength conversion layer produce, is called the first Stimulated Light and the second Stimulated Light.These two reflex housings are provided with a through hole separately, for the exciting light that the excitation source that transmission is corresponding with it produces.These two reflex housings utilize the difference of the optical extend of exciting light and Stimulated Light the light path of exciting light and Stimulated Light to be made a distinction.It is easily understood that when wavelength conversion layer is transmission-type, namely the light path of exciting light and the light path of Stimulated Light lay respectively at the both sides of wavelength conversion layer, can not need to use reflex housing.But adopt reflective wavelength conversion layer and reflex housing in the present embodiment, the loss of light beam can be reduced, improve beam utilization.

Beam splitting system is used for the two bundle different wavelength range light the first light and the 3rd light are divided into respectively along the first optical channel and the second optical channel outgoing, and respectively along the first optical channel and the second optical channel outgoing second light and the 4th light.In the present embodiment, catoptron 2812 is positioned on the emitting light path of the second Stimulated Light, and the first Stimulated Light and the second Stimulated Light through catoptron 2812 reflection are incident to the both sides of optical filter 2811 respectively.Optical filter 2814 for the green color components in reflect yellow (i.e. the first light and the 3rd light) and transmit red light composition, also for reflect blue (i.e. the second light and the 4th light) along the first optical channel and the second optical channel outgoing.DMD 2811 is for modulating through the light beam of optical filter 2814 along the first optical channel outgoing.DMD 2813 is for modulating through the light beam of optical filter 2814 along the second optical channel outgoing.

Preferably, the first Stimulated Light to enter after the even light of dodging device 2807 and collecting lens 2810 outgoing more successively to optical filter 2811 after reflex housing 2803 is collected.Same, the second Stimulated Light to enter after the even light of dodging device 2808 and collecting lens 2809 outgoing more successively to optical filter 2811 after reflex housing 2804 is collected.Like this, the utilization factor of the first Stimulated Light and the second Stimulated Light can be improved, reduce light loss.

As shown in figure 30, Figure 30 is a kind of working timing figure of the light-source system shown in Figure 28.Be described as follows.In the one-period T that wavelength conversion layer 2805 rotates, when the second subregion 2805B and the 4th subregion 2805D lays respectively in the light path of two bundle exciting lights, first control device controls two excitation sources and lights, then two DMD receive the blue light that optical filter 2811 reflects simultaneously; When the first subregion 2805A and the 3rd subregion 2508C lays respectively in the light path of two bundle exciting lights, within the front t1 time, first control device controls excitation source 2802 and lights, and excitation source 2801 is closed, then DMD2813 receives green glow, and DMD 2811 receives ruddiness; Within the rear t2 time, first control device controls excitation source 2801 and lights, and excitation source 2802 is closed, then DMD2813 receives ruddiness, and DMD2811 receives green glow.

Preferably, when the first subregion 2805A and the second subregion 2805C lays respectively in the light path of two bundle exciting lights, period has in part-time section t3, and first control device controls excitation source 2801 and 2802 and lights simultaneously, then two DMD receive the conjunction light of ruddiness and green glow simultaneously, i.e. gold-tinted.This makes the brightness of light-source system improve.

In the present embodiment, when the second subregion 2805B and the 4th subregion 2805D lays respectively in the light path of two bundle exciting lights, the length of the working time of two bundle exciting lights can be adjusted, to adjust the amount of the blue light that two DMD receive respectively, and then adjust the color of image of final light-source system outgoing.As a same reason, also can when the first subregion 2805A and the 3rd subregion 2805C lay respectively in the light path of two bundle exciting lights, adjust the length of the working time of two bundle exciting lights respectively, the sequential that two DMD receive respectively is red to adjust, the amount of green glow.

In the present embodiment, two excitation sources also can be blue light sources, and the second subregion 2805B and the 4th subregion 2805D is provided with reflective areas, for reflect blue.When excitation source is LASER Light Source, preferably, the second subregion 2805B and the 4th subregion 2805D is also provided with scattering material, for carrying out eliminating coherence to blue light.

In the present embodiment, first, second, third and fourth light also can be different colours light, the light modulated can be needed respectively to decide this four the bundle spectrum of light and optical filtering curve for the optical filter by the first light and the 3rd smooth light splitting according to two DMD.

Embodiment 17

Refer to Figure 31, Figure 31 is the schematic diagram of the illuminating source of another embodiment of light-source system of the present invention.In the present embodiment, light-source system 3100 comprises light-emitting device, beam splitting system, the first spatial light modulator 3111 and second space photomodulator 3113.Light-emitting device comprises excitation source 3101 and 3102, wavelength conversion layer 3105, first drive unit 3106 and first control device (not shown).Beam splitting system comprises optical filter 3109, catoptron 3103 and 3104 with through hole.

The present embodiment and difference part embodiment illustrated in fig. 28 comprise:

On the emitting light path of wavelength conversion layer 2805, place reflex housing in light-source system shown in Figure 28, the sequential light that light-emitting device is sent enters beam splitting system again after reflex housing is collected.In the present embodiment, the emitting light path of wavelength conversion layer 3105 does not place reflex housing, but directly place beam splitting system.

The red color light component of optical filter 3109 in beam splitting system for the green color components in transmission gold-tinted and in reflect yellow, also for transmission second light and the 4th light (being blue light in the present embodiment) respectively.The exciting light that first excitation source 3101 produces is incident to wavelength conversion layer 3105 successively after the through hole on catoptron 3103 and collimation lens 3108.First Stimulated Light of wavelength conversion layer 3105 outgoing is reflexed to optical filter 3109 by catoptron 3103 after collimation lens 3108 collimates.The exciting light that second excitation source 3102 produces is incident to wavelength conversion layer 3105 successively after the through hole on catoptron 3104, optical filter 3109 and collimation lens 3107.Second Stimulated Light of wavelength conversion layer 3105 outgoing enters optical filter 3109 after collimation lens 3107 collimates.

The work schedule concrete example of the light-source system shown in Figure 31 is as follows.In the one-period T that wavelength conversion layer 3108 rotates, when the second subregion 2805B and the 4th subregion 2805D lays respectively in the light path of two bundle exciting lights, first control device controls two excitation sources and lights, then DMD3113 receives the blue light of optical filter 3109 transmission, and DMD 3111 receives successively through the blue light of optical filter 3109 transmittance and reflectance mirror 3104 reflection; When the first subregion 2805A and the 3rd subregion 2805C lays respectively in the light path of two bundle exciting lights, within the front t1 time, first control device controls excitation source 3101 and lights, and excitation source 3102 is closed, then DMD3113 receives ruddiness, and DMD3111 receives green glow; Within the rear t2 time, first control device controls excitation source 3102 and lights, and excitation source 3101 is closed, then DMD3113 receives green glow, and DMD3111 receives ruddiness.

For convenience of describing, in above each embodiment, all adopt the first light and the 3rd light to be gold-tinted, the second light and the 4th light are blue light is example explanation.In practice, this four bundles light can be also other color of light, is not limited to described above.Corresponding, the optical filtering curve of the optical filter in beam splitting system or filtering apparatus is the specific design according to the concrete color of this four bundles light also.

In above each embodiment, have in the wavelength conversion layer of different subregion and the filtering apparatus of different section, zones of different on wavelength conversion layer or filtering apparatus may not be around a center of circle circumference distribution, but the belt-like zone be set in parallel or take other suitable set-up modes.Corresponding, for driving the drive unit of this wavelength conversion layer or filtering apparatus fortune merit can be linear translation device or take other suitable set-up modes, linearly path or other predefined paths act on this wavelength conversion layer or filtering apparatus to the hot spot formed on this wavelength conversion layer or filtering apparatus to make light beam respectively.

In above each embodiment, the light of two DMD outgoing can project in same viewing area, and to form piece image, as shown in figure 32, Figure 32 is the structural representation of an embodiment of light-source system of the present invention.The light of two DMD outgoing also can project two viewing areas respectively, to form two width images, as shown in figure 33.Figure 33 is the structural representation of another embodiment of light-source system of the present invention.

In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.

The embodiment of the present invention also provides a kind of optical projection system, comprises light-source system, and this light-source system can have the structure and fuction in the various embodiments described above.This optical projection system can adopt various shadow casting technique, such as liquid crystal display (LCD, Liquid Crystal Display) shadow casting technique, digital light path processor (DLP, Digital Light Processor) shadow casting technique.In addition, above-mentioned light-emitting device also can be applied to illuminator, such as stage lighting illumination.

The foregoing is only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims

1. a light modulation system, is characterized in that, is made up of the first spatial light modulator and second space photomodulator;

Described first spatial light modulator is used for modulating the light of sequential via first passage;

Described second space photomodulator is used for modulating the light of sequential via second channel;

Within a cycle, the light of described first passage and the light of second channel at least comprise the light of three kinds of different predominant wavelengths.

2. light modulation system according to claim 1, is characterized in that,

Described first spatial light modulator and described second space photomodulator control the length of the modulating time of the light of different predominant wavelength respectively.

3. light modulation system according to claim 1, is characterized in that,

In same period, described first passage sequentially outgoing three primary colours light, described second channel sequentially outgoing three primary colours light;

The three primary colours light of described first passage is different with the predominant wavelength of at least one primary lights in the three primary colours light of second channel.

4. light modulation system according to claim 3, is characterized in that,

The described light through the first spatial light modulator and second space photomodulator projects to the same area, forms piece image; Or the described light through the first spatial light modulator and second space photomodulator projects to two regions respectively, forms two width images.

5. light modulation system according to claim 1, is characterized in that,

Described first spatial light modulator and second space photomodulator are synchronously modulated the light of identical or different predominant wavelength.

6. light modulation system according to claim 1, is characterized in that,

Described one-period at least comprises first time period and the second time period;

, in first passage and at least one passage of second channel, there is light in described first time period and in the second time period;

Described first spatial light modulator and second space photomodulator control to modulate the light of different predominant wavelength simultaneously.

7. light modulation system according to claim 1, is characterized in that,

Described first spatial light modulator or second space photomodulator are used for modulating the light of two kinds of different predominant wavelengths simultaneously.

8. light modulation system according to claim 1, is characterized in that,

The light of same color modulated by described first spatial light modulator and second space photomodulator in the section sometime of same period simultaneously.

9. light modulation system according to claim 1, is characterized in that,

Described one-period comprises and sequentially comprises N number of time period, and wherein, N is natural number, N >=2;

In at least one time period described, the first spatial light modulator and second space photomodulator control to modulate the light of identical predominant wavelength simultaneously.

10. light modulation system according to any one of claim 1 to 9, is characterized in that,

Described sequential is blue light and green glow via the light of first passage;

Described sequential is ruddiness via the light of second channel; Described ruddiness and green glow are modulated in section at one time simultaneously.

11. light modulation systems according to any one of claim 1 to 9, is characterized in that,

Described sequential is blue light, green glow and green light via the light of first passage;

Described sequential is ruddiness via the light of second channel; While described first spatial light modulator sequentially modulates green glow and green light, second space light modulator modulates ruddiness.

12. light modulation systems according to any one of claim 1 to 9, is characterized in that,

Described sequential is blue light, green glow and ruddiness via the light of first passage;

Described sequential is blue light, ruddiness and green glow via the light of second channel;

Described first spatial light modulator carries out synchronous modulation to the blue light of first passage and second space photomodulator to the blue light of second channel, described first spatial light modulator carries out synchronous modulation to the green glow of first passage and second space photomodulator to the ruddiness of second channel, and described first spatial light modulator carries out synchronous modulation to the ruddiness of first passage and second space photomodulator to the green glow of second channel.

13. light modulation systems according to any one of claim 1 to 9, is characterized in that,

Described sequential is blue light, green glow, ruddiness and white light via the light of first passage;

Described sequential is blue light, ruddiness, green glow and white light via the light of second channel;

Described first spatial light modulator carries out synchronous modulation to the blue light of first passage and second space photomodulator to the blue light of second channel, described first spatial light modulator carries out synchronous modulation to the green glow of first passage and second space photomodulator to the ruddiness of second channel, described first spatial light modulator carries out synchronous modulation to the ruddiness of first passage and second space photomodulator to the green glow of second channel, and described first spatial light modulator carries out synchronous modulation to the white light of first passage and second space photomodulator to the white light of second channel.