CN103899923A

CN103899923A - Illuminating device

Info

Publication number: CN103899923A
Application number: CN201210577606.2A
Authority: CN
Inventors: 许义忠
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2012-12-27
Filing date: 2012-12-27
Publication date: 2014-07-02

Abstract

An illuminating device comprises a laser light source, a fluorophor, an optical splitter and a reflector set. The optical splitter is used for splitting light emitted by the laser light source into multiple beams. The reflector set is used for reflecting the multiple light beams to the fluorophor at multiple angles so as to excite fluorescent powder in the fluorophor. According to the illuminating device, light emitted by the laser light source is split into multiple beams and reflected into the fluorophor at multiple angles so that the fluorescent powder in the fluorophor can be evenly excited, and thus the illuminating device is larger is light outgoing angle and more uniform in light intensity.

Description

Lighting device

Technical field

The present invention relates to a kind of lighting device, relate in particular to a kind of laser illuminator system.

Background technology

Than traditional light emitting source, light emitting diode (Light Emitting Diode, LED) there is the advantages such as lightweight, volume is little, it is low to pollute, the life-span is long, it is as a kind of novel light emitting source, be applied to more and more in the middle of each field, as street lamp, traffic lights, signal lamp, shot-light and ornament lamp etc.

But the rising angle of light emitting diode is limited, generally only have 120 degree, and its forward light intensity is much larger than side direction light intensity, thereby can causes LED lamp rising angle little, and the problem such as bright dipping is inhomogeneous.

Summary of the invention

In view of this, be necessary to provide that a kind of rising angle is large, the uniform lighting device of luminous intensity.

A kind of lighting device, it comprises LASER Light Source, fluorophor, optical splitter and speculum group.This optical splitter is divided into multi beam for the light that LASER Light Source is sent.Speculum group by these many light beams respectively from multiple angle directive fluorophor, thereby the fluorescent material in excited fluophor.

Above-mentioned lighting device adopts laser as light source, because laser has high directivity, luminous intensity is even, and the light that LASER Light Source sends is divided into multi beam by optical splitter, respectively from multiple angle reflections to fluorophor, thereby evenly fluorescent material in excited fluophor, the rising angle of the lighting device making is larger, more even from the light intensity of lighting device all directions outgoing.

Brief description of the drawings

Fig. 1 is the structural representation of the lighting device in first embodiment of the invention.

Fig. 2 is the structural representation of the lighting device in second embodiment of the invention.

Main element symbol description

Lighting device	10、20
		LASER Light Source	100
Fluorophor	200
		Optical splitter	300
Speculum group	400
		Reflector	500
The first light beam	110
		The second light beam	120
The 3rd light beam	130
		Fluorescent material	210
End face	220
		Bottom surface	230
Left surface	240
		Right flank	250
The first speculum	410
		The second speculum	420
The 3rd speculum	430
		The 4th speculum	440

Following detailed description of the invention further illustrates the present invention in connection with above-mentioned accompanying drawing.

Detailed description of the invention

Below in conjunction with accompanying drawing, the present invention is described in further detail.

Embodiment one

Refer to Fig. 1, a kind of lighting device 10 that first embodiment of the invention provides comprises a LASER Light Source 100, a fluorophor 200, an optical splitter 300 and a speculum group 400.

The luminous frequency spectrum of described LASER Light Source 100 is narrower, and it emits beam more concentrated, can disperse hardly, and luminous intensity is even, and brightness is higher.In the present embodiment, this LASER Light Source 100 is laser diode, and its light sending is for blue.

Described fluorophor 200 is located at the upper right side of LASER Light Source 100.In the present embodiment, described fluorophor 200 is cube structure, and it adopts sealing resin doping fluorescent powder 210 to make.This fluorophor 200 has the end face 220 and bottom surface 230 and the left surface 240 being oppositely arranged and the right flank 250 that are oppositely arranged.In the present embodiment, described fluorescent material 210 is yellow fluorescent powder, the mixing of its optional autovulcanization matter fluorescent powder, silicate fluorescent powder, Nitride phosphor, nitric oxide fluorescent powder, yttrium aluminium garnet fluorescent powder or above-mentioned fluorescent material.

Described optical splitter 300 is between LASER Light Source 100 and fluorophor 200, and it is divided into multi beam for the light that LASER Light Source 100 is sent.In the present embodiment, described optical splitter 300 is fiber waveguide optical splitter, and the light that LASER Light Source 100 sends is divided into three beams by this fiber waveguide optical splitter, falls down be divided into successively the first light beam 110, the second light beam 120 and the 3rd light beam 130 from above.Because the light-gathering of laser is better, the light beam that is therefore divided into multiple paths by optical splitter 300 can remain original light-gathering.Be understandable that, the quantity of the light beam that optical splitter 300 is divided into can be determined according to concrete lighting demand.

Described speculum group 400 is positioned at by the path of each light beam of optical splitter 300 light splitting, for by each light beam respectively from multiple angle reflections to fluorophor 200.In the present embodiment, described speculum group 400 comprises the first speculum 410 of being positioned on the first light beam 110 paths, is positioned at the second speculum 420 on the second light beam 120 paths and is positioned at the 3rd speculum 430 on the 3rd light beam 130 paths.This the first speculum 410 is positioned at the lower left of fluorophor 200, it is for reflecting the first light beam 110 vertically upward, described speculum group 400 also comprises that one is positioned at directly over the first speculum 410 and four speculum 440 corresponding with the left surface 240 of fluorophor 200, the 4th speculum 440 reflexes to the left surface 240 of fluorophor 200 for the first light beam 110 that the first speculum 410 is reflected, in the present embodiment, described the first speculum 410 and the 4th speculum 440 parallel interval settings, described the 4th speculum 440 for by the first light beam 110 reflected in parallel to fluorophor 200, this the second speculum 420 is positioned at the lower right of fluorophor 200, it is for reflexing to the second light beam 120 right flank 250 of fluorophor 200, in the present embodiment, the second speculum 420 by the second light beam 120 from the lower right oblique incidence of fluorophor 200 to the right flank 250 of fluorophor 200, the 3rd speculum 430 be positioned at fluorophor 200 under and corresponding with the bottom surface 230 of fluorophor 200, it is for reflexing to the 3rd light beam 130 bottom surface 230 of fluorophor 200, in this enforcement, the 3rd light beam 130 is reflexed to vertically upward fluorophor 200 by the 3rd speculum 430.Be understandable that, quantity, the setting position of reflective mirror and angle etc. is set can determines as the case may be, as long as can be by each light beam from multiple angle reflections to fluorophor 200.

In the time that lighting device 10 is worked, the blue laser that LASER Light Source 100 sends is divided into three beams by optical splitter 300, but be reflected onto the left surface 240 of fluorophor 200 through speculum group 400, on right flank 250 and bottom surface 230, after entering into the inside of fluorophor 200, yellow fluorescent powder in fluorophor 200 210 is excited, after being excited, yellow fluorescent powder 210 produces gold-tinted, meanwhile, the transmission path that is incident to the blue laser in fluorophor 200 is destroyed by fluorescent material 210 and directive all directions form white light with yellow light mix, finally penetrate from each surface uniform of fluorophor 200.Thereby the rising angle of lighting device 10 is larger, almost can realize the illumination of 360 degree.In addition because laser itself can be dispersed hardly, luminous intensity is even, and the light that sends of LASER Light Source 100 be reflected mirror group 400 from multiple angle reflections to fluorophor 200, thereby the evenly interior fluorescent material 210 of excited fluophor 200, make the light intensity of outgoing lighting device 10 all directions even, can not have the powerful and problem of ambient light power of traditional LED light source intermediate light.

Embodiment two

Refer to Fig. 2, the difference of the lighting device 10 in lighting device 20 and the first embodiment that second embodiment of the invention provides is: the end face 220 top covers of fluorophor 200 are established a reflector 500, and the cross section of this reflector 500 is an arc.So, the light being excited by fluorescent material 210 from LASER Light Source 100, a part directly bottom surface 230 and each side of autofluorescence body 200 penetrates; Another part incides reflector 500 from the end face 220 of fluorophor 200, enters into again fluorophor 200 through the reflection of reflector 500, finally penetrates from the bottom surface 230 of fluorophor 200.Adopt reflector 500 can realize the directional lighting of lighting device 20, and reflector 500 can also reflex to part light in fluorophor 200 again, thereby increase the efficiency that fluorescent material 210 is excited.

Understandable, LASER Light Source 100 also can send the light of other color except blue light, and fluorescent material 210 also can be the fluorescent material of non-yellow, and the light that LASER Light Source 100 sends can produce the mixed light of another color after being excited by fluorescent material 210.

Be understandable that, for the person of ordinary skill of the art, can make change and the distortion that other various pictures are answered by technical conceive according to the present invention, and all these change the protection domain that all should belong to the claims in the present invention with distortion.

Claims

1. a lighting device, it is characterized in that: comprise LASER Light Source, fluorophor, optical splitter and speculum group, this optical splitter is divided into multi beam for light that LASER Light Source is sent, speculum group by these many light beams respectively from multiple angle directive fluorophor, thereby the fluorescent material in excited fluophor.

2. lighting device as claimed in claim 1, is characterized in that: described LASER Light Source is laser diode.

3. lighting device as claimed in claim 1, it is characterized in that: described fluorophor adopts sealing resin doping fluorescent powder to make, and described fluorescent material is selected from the mixing of sulphide fluorescent material, silicate fluorescent powder, Nitride phosphor, nitric oxide fluorescent powder, yttrium aluminium garnet fluorescent powder or above-mentioned fluorescent material.

4. lighting device as claimed in claim 1, is characterized in that: the light that described LASER Light Source sends is for blue, and described fluorescent material is yellow fluorescent powder.

5. lighting device as claimed in claim 1, is characterized in that: described fluorophor comprises the end face and bottom surface and the left surface being oppositely arranged and the right flank that are oppositely arranged.

6. lighting device as claimed in claim 5, it is characterized in that: the light that described optical splitter sends LASER Light Source is divided into the first light beam, the second light beam and the 3rd light beam, described speculum group is positioned on the path of each light beam, for three light beams being reflexed to respectively to bottom surface, left surface and the right flank of fluorophor.

7. lighting device as claimed in claim 6, is characterized in that: described speculum group comprises the first speculum of being positioned on the first beam path, is positioned at the second speculum on the second beam path and is positioned at the 3rd speculum on the 3rd beam path.

8. lighting device as claimed in claim 7, it is characterized in that: described the first speculum is positioned at the lower left of fluorophor, for the first light beam is reflected vertically upward, described speculum group also comprises that one is positioned at the 4th speculum directly over the first speculum, the 4th speculum is for the left surface to fluorophor by the first beam reflection of the first speculum reflection, this the second speculum is positioned at the lower right of fluorophor, for the right flank to fluorophor by the second beam reflection, the 3rd speculum be positioned at fluorophor under, for the bottom surface to fluorophor by the 3rd beam reflection.

9. lighting device as claimed in claim 5, is characterized in that: the end face cover of described fluorophor is established a reflector.

10. lighting device as claimed in claim 1, is characterized in that: described optical splitter is fiber waveguide optical splitter.