CN100478736C - Liquid crystal board illumination device using X prismatic decomposition - Google Patents
Liquid crystal board illumination device using X prismatic decomposition Download PDFInfo
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- CN100478736C CN100478736C CNB2006101164112A CN200610116411A CN100478736C CN 100478736 C CN100478736 C CN 100478736C CN B2006101164112 A CNB2006101164112 A CN B2006101164112A CN 200610116411 A CN200610116411 A CN 200610116411A CN 100478736 C CN100478736 C CN 100478736C
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- photoconductive tube
- ruddiness
- blue light
- green glow
- prism
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Abstract
The invention relates to a kind of lighting facility for liquid crystal layers through the light splitting effect of an X prism, it is in the technical scopes of liquid crystal projector's optical engine. Traditional lighting facility for liquid crystal layers contains separate optical components which make the lighting facility a bigger configuration, higher cost, more complicated facture and debugging. The lighting facility in this invention includes for the projecting light, infrared-ultraviolet filter lens, the conjoined light splitting module composed by the ultra-violet filter lens, pyramid conduits, tridimensional X prism for light split, red light conduits, green light conduits, blue light conduits, red light transition pyramid, green light transition pyramid, blue light transition pyramid, red light transition conduits, green light transition conduits and blue light transition conduits, red light polarization prisms, red light liquid crystal layers, green light polarization prisms, green light liquid crystal layers, blue light polarization prisms and blue light liquid crystal layers. This lighting facility is characterized in smaller configuration and volume, easier processing in facture and debugging, lower cost, higher availability of lighting energy, batter uniformity and it can illume in different color.
Description
Technical field
The present invention relates to a kind of liquid crystal board illumination device, belong to the technical field of the light engine of liquid crystal projector with X prismatic decomposition.
Background technology
In traditional reflecting liquid crystal projector, the liquid crystal board illumination device of light engine is made up of lighting source 10, optical module 11, the first double-colored spectroscope 120, first catoptron 130, first condenser 140, first polarization splitting prism 150, second catoptron 131, the 3rd catoptron 132, the second double-colored spectroscope 121, second condenser 142, second polarization splitting prism 152, the 3rd condenser 141 and the 3rd polarization splitting prism 151.See Fig. 1.Its principle of work is summarized as follows: the white light from lighting source 10 sends, behind optical module 11 optical filterings and even light, form the S polarized light, and after first double-colored spectroscope 120 beam split, be divided into different transmitted light of wavelength and reflected light.Transmitted light enters first polarization splitting prism 150 again through the reflection of first catoptron 130 behind first condenser, 140 optically focused, reflexed on the LCOS liquid crystal board 160 by the inclined-plane of first polarization splitting prism 150.Reflected light incides the second double-colored spectroscope 121 after reflecting through the reflection of second catoptron 131 and the 3rd catoptron 132, behind the second double-colored spectroscope 121, is divided into different transmitted light of wavelength and reflected light again.Transmitted light enters second polarization splitting prism 152 after through second condenser, 142 optically focused, reflexes on the LCOS liquid crystal board 162 through the inclined-plane of second polarization splitting prism 152 again.Reflected light through the 3rd condenser 141 optically focused after, enter the 3rd polarization splitting prism 151, reflex on the 3rd LCOS liquid crystal board 161 through the inclined-plane of the 3rd polarization splitting prism 151 again.So far, the colour esensitized equipment of background technology has been finished the white light that lighting source 10 is sent and has been divided into three coloured light, and first, second and the 3rd LCOS liquid crystal board 160,161 and 162 throw light on respectively.
The shortcoming of this lighting device is that other piece volumes of optics of this lighting device is big, divides spreading, makes the structure of this lighting device bigger, and debugging is difficult, makes difficulty and cost height.
Summary of the invention
The purpose of this invention is to provide a kind of liquid crystal board illumination device with X prismatic decomposition, the advantage of this lighting device is: the optics of this lighting device parts in addition adopts the combined modular structure, volume is little, compact conformation, debugging and making are easily, cost is low, the efficiency of light energy utilization height of lighting source, the good uniformity of color separation and illumination.
The present invention makes above-mentioned purpose be achieved by the following technical solutions:
Described lighting device contains light source module 20 and polarizing prism group 25, light source module 20 contains projection lamp 201 and infrared and ultraviolet optical filtering 202, polarizing prism group 25 contains ruddiness polarizing prism group 250, ruddiness liquid crystal board 260, green glow polarizing prism group 251, green glow liquid crystal board 261, with blue light polarizing prism group 252, blue light liquid crystal board 262, the center of projection lamp 201 is installed on the central optical axis of light source module 20, the mode that infrared and ultraviolet optical filtering 202 overlaps with the central optical axis of light source module 20 with its central optical axis is placed in the rear of projection lamp 201, ruddiness liquid crystal board 260, green glow liquid crystal board 261 and blue light liquid crystal board 262 with separately central optical axis respectively with ruddiness polarizing prism group 250, the mode that the central optical axis of green glow polarizing prism group 251 and blue light polarizing prism group 252 overlaps is placed in ruddiness polarizing prism group 250 respectively, the rear of the exiting surface of green glow polarizing prism group 251 and blue light polarizing prism group 252, it is characterized in that, described lighting device also contains splitting module 23 and relay lens module 24, splitting module 23 contains pyramid photoconductive tube 21, beam split X block prism 22, ruddiness photoconductive tube 230, green glow photoconductive tube 231, blue light photoconductive tube 232, ruddiness deflecting prism 233, green glow deflecting prism 234 and blue light deflecting prism liquid crystal, ruddiness turnover photoconductive tube 236, green glow turnover photoconductive tube 237 and blue light turnover photoconductive tube 238, pyramid photoconductive tube 21 is solid positive truncated rectangular pyramids made from optical material or the hollow positive truncated rectangular pyramids made from optical material, beam split X block prism 22 is formed by four right-angle prism gummeds made from optical material, the first mutually orthogonal dichroic coating 220 and second dichroic coating 221 are arranged respectively on the diagonal plane of beam split X block prism 22, first dichroic coating 220 is reflect red, see through the dichroic coating of green glow and blue light, second dichroic coating 221 is reflect blue, see through the dichroic coating of ruddiness and green glow, described photoconductive tube: ruddiness photoconductive tube 230, green glow photoconductive tube 231, blue light photoconductive tube 232, ruddiness turnover photoconductive tube 236, green glow turnover photoconductive tube 237 and blue light turnover photoconductive tube 238 all are solid right prisms made from optical material or all are hollow right prisms made from optical material, described deflecting prism: ruddiness deflecting prism 233, green glow deflecting prism 234 and blue light deflecting prism 235 all are right-angle prisms made from optical material, relay lens module 24 contains ruddiness relay lens group 240, green glow relay lens group 241, blue light relay lens group 242, ruddiness relay lens group 240, green glow relay lens group 241, each group in the blue light relay lens group 242 is formed by lens and polaroid, the mode that the first white light plane of incidence 211 of pyramid photoconductive tube 21 overlaps with the central optical axis of light source module 20 with the central optical axis of pyramid photoconductive tube 21 is placed in the rear of light source module 20, the first white light exit facet 210 and the second white light plane of incidence 222 of beam split X block prism 22 of pyramid photoconductive tube 21 are close to, ruddiness photoconductive tube 230, an end face of green glow photoconductive tube 231 and blue light photoconductive tube 232 respectively with the ruddiness of beam split X block prism 22, green glow and blue light exit facet 223,224 and 225 are close to, ruddiness photoconductive tube 230, another end face of green glow photoconductive tube 231 and blue light photoconductive tube 232 respectively with ruddiness deflecting prism 233, a right angle face of green glow deflecting prism 234 and blue light deflecting prism 235 is close to, ruddiness deflecting prism 233, another right angle face of green glow deflecting prism 234 and blue light deflecting prism 235 respectively with ruddiness turnover photoconductive tube 236, an end face of green glow turnover photoconductive tube 237 and blue light turnover photoconductive tube 238 is close to, ruddiness photoconductive tube 230, green glow photoconductive tube 231 and blue light photoconductive tube 232 respectively with ruddiness turnover photoconductive tube 236, green glow turnover photoconductive tube 237 is vertical with blue light turnover photoconductive tube 238, ruddiness turnover photoconductive tube 236, another end face of green glow turnover photoconductive tube 237 and blue light turnover photoconductive tube 238 with separately central optical axis respectively with ruddiness relay lens group 240, green glow relay lens group 241, the mode that the central optical axis of blue light relay lens group 242 overlaps is placed in ruddiness relay lens group 240 respectively, green glow relay lens group 241, the place ahead of blue light relay lens group 242.
Compare with background technology, advantage of the present invention is:
1, lighting device of the present invention adopts beam split X block prism 22 and combined modular structure, and volume is little, compact conformation, and debugging and making are easy, and cost is low, divides the colour efficiency height, and color homogeneity is good.
2, lighting device of the present invention adopts the angle, input aperture of pyramid photoconductive tube 21 compression illuminating bundles, and illuminating bundle is through the total reflection transmission of photoconductive tube, deflecting prism and turnover photoconductive tube and spare light, the efficiency of light energy utilization height of light source, the good uniformity of liquid crystal board illumination.
Description of drawings
Fig. 1: the structural representation of traditional liquid crystal board illumination device.
Fig. 2: the light source module 20 of liquid crystal board illumination device of the present invention and the structural representation of splitting module 23.
Fig. 3: the relay lens module 24 of liquid crystal board illumination device of the present invention and the structural representation of polarizing prism group 25.
Fig. 4: the general illustration of liquid crystal board illumination device of the present invention.
Embodiment
Now describe technical scheme of the present invention in conjunction with the embodiments in detail.
One of liquid crystal board illumination device of embodiment 1 usefulness X prismatic decomposition
The structure of structure that this is routine and the top described liquid crystal board illumination device of summary of the invention is identical.Simple and clear for composing a piece of writing, just be not repeated in this description this routine structure here.
Principle of work.
The white light that the projection lamp 201 of light source module 20 sends through the infrared and ultraviolet optical filtering 202 and the first white light plane of incidence 211, is injected pyramid photoconductive tube 21.Most of infrared ray and ultraviolet ray in the infrared and ultraviolet optical filtering 202 filtering white lights.The white light that enters pyramid photoconductive tube 21 is injected beam split X block prism 22 through the white light exit facet 210 and the second white light plane of incidence 222.21 compressions of pyramid photoconductive tube are by the angle of the light beam of the white light in it, and even light.
The white light that beam split X block prism 22 and first and second dichroic coating 220,221 will enter in the beam split X block prism 22 is divided into red, green, blue three coloured light, respectively by ruddiness, green glow and blue light exit facet 223,224 and 225 outgoing.
The situation of existing accompanying drawings ruddiness.At Fig. 2, among Fig. 3: the ruddiness by first dichroic coating 220 reflection of beam split X block prism 22 penetrates and enters ruddiness photoconductive tube 230 from exit facet 223, even light in ruddiness photoconductive tube 230 is after ruddiness turnover photoconductive tube 236 is injected in 233 turnovers of ruddiness deflecting prism, in ruddiness turnover photoconductive tube 236, inject lens and polaroid in the ruddiness relay lens group 240 behind the even light, carry out the P polarized light in optically focused and the filtering ruddiness, S polarized light in the ruddiness is injected ruddiness polarizing prism group 250, and after the light splitting surface reflection of ruddiness polarizing prism group 250, penetrate, shine on the ruddiness liquid crystal board 260.
The situation of green glow and blue light is similar to the situation of ruddiness, can analogize, and just no longer repeats here.
Two of the liquid crystal board illumination device of embodiment 2 usefulness X prismatic decompositions
This example is except the pyramid photoconductive tube 21 that adopts is the hollow positive truncated rectangular pyramids made from optical material, and all the other structures are all identical with embodiment 1.
Three of the liquid crystal board illumination device of embodiment 3 usefulness X prismatic decompositions
The described photoconductive tube of this example except adopting: ruddiness photoconductive tube 230, green glow photoconductive tube 231, blue light photoconductive tube 232, ruddiness turnover photoconductive tube 236, green glow turnover photoconductive tube 237 and blue light turnover photoconductive tube 238 all are that all the other structures are all identical with embodiment 1 the hollow right prism made from optical material.
Four of the liquid crystal board illumination device of embodiment 4 usefulness X prismatic decompositions
This example is the hollow positive truncated rectangular pyramids made with optical material and the described photoconductive tube of employing except the pyramid photoconductive tube 21 that adopts: ruddiness photoconductive tube 230, green glow photoconductive tube 231, blue light photoconductive tube 232, ruddiness turnover photoconductive tube 236, green glow turnover photoconductive tube 237 and blue light turnover photoconductive tube 238 all are that all the other structures are all identical with embodiment 1 the hollow right prism made from optical material.
Claims (1)
1, a kind of liquid crystal board illumination device with X prismatic decomposition, contain light source module (20) and polarizing prism group (25), light source module (20) contains projection lamp (201) and infrared and ultraviolet optical filtering (202), polarizing prism group (25) contains ruddiness polarizing prism group (250), ruddiness liquid crystal board (260), green glow polarizing prism group (251), green glow liquid crystal board (261), with blue light polarizing prism group (252), blue light liquid crystal board (262), the center of projection lamp (201) is installed on the central optical axis of light source module (20), the mode that infrared and ultraviolet optical filtering (202) overlaps with the central optical axis of light source module (20) with its central optical axis is placed in the rear of projection lamp (201), ruddiness liquid crystal board (260), green glow liquid crystal board (261) and blue light liquid crystal board (262) with separately central optical axis respectively with ruddiness polarizing prism group (250), the mode that the central optical axis of green glow polarizing prism group (251) and blue light polarizing prism group (252) overlaps is placed in ruddiness polarizing prism group (250) respectively, the rear of the exiting surface of green glow polarizing prism group (251) and blue light polarizing prism group (252), it is characterized in that, described lighting device also contains splitting module (23) and relay lens module (24), splitting module (23) contains pyramid photoconductive tube (21), beam split X block prism (22), ruddiness photoconductive tube (230), green glow photoconductive tube (231), blue light photoconductive tube (232), ruddiness deflecting prism (233), green glow deflecting prism (234) and blue light deflecting prism (235), ruddiness turnover photoconductive tube (236), green glow turnover photoconductive tube (237) and blue light turnover photoconductive tube (238), pyramid photoconductive tube (21) is solid positive truncated rectangular pyramids made from optical material or the hollow positive truncated rectangular pyramids made from optical material, beam split X block prism (22) is formed by four right-angle prism gummeds made from optical material, mutually orthogonal first dichroic coating (220) and second dichroic coating (221) are arranged respectively on the diagonal plane of beam split X block prism (22), first dichroic coating (220) is a reflect red, see through the dichroic coating of green glow and blue light, second dichroic coating (221) is a reflect blue, see through the dichroic coating of ruddiness and green glow, described photoconductive tube: ruddiness photoconductive tube (230), green glow photoconductive tube (231), blue light photoconductive tube (232), ruddiness turnover photoconductive tube (236), green glow turnover photoconductive tube (237) and the blue light photoconductive tube (238) of transferring all is solid right prisms made from optical material or all is hollow right prisms made from optical material, described deflecting prism: ruddiness deflecting prism (233), green glow deflecting prism (234) and blue light deflecting prism (235) all are right-angle prisms made from optical material, relay lens module (24) contains ruddiness relay lens group (240), green glow relay lens group (241), blue light relay lens group (242), ruddiness relay lens group (240), green glow relay lens group (241), each group in the blue light relay lens group (242) is formed by lens and polaroid, the mode that the first white light plane of incidence (211) of pyramid photoconductive tube (21) overlaps with the central optical axis of light source module (20) with the central optical axis of pyramid photoconductive tube (21) is placed in the rear of light source module (20), the first white light exit facet (210) of pyramid photoconductive tube (21) is close to the second white light plane of incidence (222) of beam split X block prism (22), ruddiness photoconductive tube (230), an end face of green glow photoconductive tube (231) and blue light photoconductive tube (232) respectively with the ruddiness exit facet (223) of beam split X block prism (22), green glow exit facet (224) and blue light exit facet (225) are close to, ruddiness photoconductive tube (230), another end face of green glow photoconductive tube (231) and blue light photoconductive tube (232) respectively with ruddiness deflecting prism (233), a right angle face of green glow deflecting prism (234) and blue light deflecting prism (235) is close to, ruddiness deflecting prism (233), another right angle face of green glow deflecting prism (234) and blue light deflecting prism (235) respectively with ruddiness turnover photoconductive tube (236), an end face of green glow turnover photoconductive tube (237) and blue light turnover photoconductive tube (238) is close to, ruddiness photoconductive tube (230), green glow photoconductive tube (231) and blue light photoconductive tube (232) respectively with ruddiness turnover photoconductive tube (236), green glow turnover photoconductive tube (237) is vertical with blue light turnover photoconductive tube (238), ruddiness turnover photoconductive tube (236), green glow turnover photoconductive tube (237) and blue light transfer photoconductive tube (238) another end face with separately central optical axis respectively with ruddiness relay lens group (240), green glow relay lens group (241), the mode that the central optical axis of blue light relay lens group (242) overlaps is placed in ruddiness relay lens group (240) respectively, green glow relay lens group (241), the place ahead of blue light relay lens group (242).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101164112A CN100478736C (en) | 2006-09-22 | 2006-09-22 | Liquid crystal board illumination device using X prismatic decomposition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101164112A CN100478736C (en) | 2006-09-22 | 2006-09-22 | Liquid crystal board illumination device using X prismatic decomposition |
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| Publication Number | Publication Date |
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| CN101149485A CN101149485A (en) | 2008-03-26 |
| CN100478736C true CN100478736C (en) | 2009-04-15 |
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| CN104076588B (en) * | 2014-07-03 | 2016-01-20 | 复旦大学 | A kind of polarization for reflection type liquid crystal panel projector divides light-combining prism group |
| JP6958530B2 (en) * | 2018-10-10 | 2021-11-02 | セイコーエプソン株式会社 | Optical module and head-mounted display |
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Owner name: QINGDAO HAITAI XINGUANG TECHNOLOGY CO., LTD. Free format text: FORMER NAME: QINGDAO CRYSTECHCOATING INC. |
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Address after: 266100 Shandong city of Qingdao province Zhuzhou City Industrial Road No. 177. Patentee after: QINGDAO HAITAI XINGUANG TECHNOLOGY CO., LTD. Address before: 266100 Shandong Province, Qingdao city Zhuzhou Road No. 177 Building No. 5 West Whitfield industrial city 4 floor Patentee before: Qingdao Haitai Filmplating Technology Co., Ltd. |
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Granted publication date: 20090415 Termination date: 20150922 |
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