CN101520162A - High-efficiency light mixing device - Google Patents
High-efficiency light mixing device Download PDFInfo
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- CN101520162A CN101520162A CN200910048262A CN200910048262A CN101520162A CN 101520162 A CN101520162 A CN 101520162A CN 200910048262 A CN200910048262 A CN 200910048262A CN 200910048262 A CN200910048262 A CN 200910048262A CN 101520162 A CN101520162 A CN 101520162A
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Abstract
The invention belongs to the technical field of optics, and in particular relates to a high-efficiency light mixing device. The device comprises a light source, a reflector and a light mixer; the reflector is formed by connecting two inner surfaces and one rear surface and has a rightly-inclined U shaped structure, or the reflector has a C-shaped concave surface; both ends of the light mixer are connected with both ends of the reflector respectively to form a closed frame structure; and the light source is positioned on the rear surface or the concave surface of the reflector. A light-emitting window of the light source aligns the light mixer. The device can achieve the aim of evenly mixing emergent light, can also reduce optical loss, and realize higher light output efficiency.
Description
Technical field
The invention belongs to optical technical field, be specifically related to a kind of high-efficiency light mixing device.
Background technology
In the optical design field, need sometimes the light that light source sends is mixed, thereby obtain evenly soft diffusion bright dipping of comparison.Such as when design is the light fixture of light source with light emitting diode (LED), because LED self light-emitting area is little, if do not controlled, tends to form stronger dazzle, allow the people produce uncomfortable sensation, this also is one of problem of being run into when lighting field is used of LED.The method that solves generally is to be used in LED front placement mixed light element to carry out mixed light, thereby produces an area source that light-emitting area is relatively large, effectively reduces glare effect.
The mixed light element generally is made by frosted glass or opal glass or acrylic, its reflection loss is generally bigger, transmissivity lower (below 70%), directly use mixed light element mixed light to tend to reduce greatly the light extraction efficiency of system, realize that therefore even mixed light is a pair of contradiction that is difficult to be in harmonious proportion with obtaining high light-emitting efficiency.Luminaire efficiency and dazzle control are being required all higher LED Design of Luminaires field, and it is particularly outstanding that this problem seems.
Summary of the invention
The objective of the invention is to overcome the existing low difficult problem of light mixing method light extraction efficiency, a kind of high-efficiency light mixing device is provided, when realizing even mixed light, obtain higher light-emitting efficiency.
The high-efficiency light mixing device that the present invention proposes, comprise light source 1, reflector 2 and light-mixing machine 3, reflector 2 be " ㄈ " font structure or be " in (" font structure any, the reflector 2 of " ㄈ " font structure is connected to form by two inner surfaces and a rear surface, and " reflector of (" type structure is a concave surface, and the two ends of light-mixing machine 3 connect reflector 2 two ends respectively, constitute airtight frame structure, light source 1 is positioned at the rear surface or the concave surface of reflector 2; The light-emitting window of light source 1 is aimed at light-mixing machine 3, and its light that sends part directly penetrates by light-mixing machine 3, and a part penetrates by light-mixing machine 3 after reflector 2 reflections, and remainder is through repeatedly penetrating by light-mixing machine 3 after the reflection between reflector 2 and the light-mixing machine 3.
Among the present invention, the inner surface of described reflector 2 is coated with in silverskin, aluminium film or the medium high-reflecting film any.
Among the present invention, the material of described light-mixing machine 3 be in frosted glass, opal glass or the acrylic any.
Among the present invention, described light source 1 is one or more light emitting diodes.
The present invention has used a reflector 2 with high collection efficiency, and the light that light source 1 is sent and the reverberation of light-mixing machine 3 are collected again, and once more by light-mixing machine 3, therefore can significantly reduce the reflection loss of light-mixing machine 3.The light extraction efficiency of system is:
Wherein α is the collection efficiency of reflector, τ is the transmissivity of light-mixing machine, r is the reflectivity of light-mixing machine, and do not use the light extraction efficiency of the system of reflector to be: η '=α ' τ, wherein α ' is system's collection efficiency of not using reflector, α '＜α, and because of 0＜r＜1, so 0＜α＜1 is η '＜η.A specific embodiment of the present invention is tested, and the result shows that system's light extraction efficiency has reached 89% (not using system's light extraction efficiency of reflector to have only 47%), and light is soft evenly, and dazzle has obtained good control.
The present invention is simple in structure, and is novel, can reach the purpose that emergent light is mixed, and can realize higher light-emitting efficiency again, solved the low difficult problem of existing light mixing method light extraction efficiency.The present invention also can be applicable to use the place of other light sources.
Description of drawings
Fig. 1 is the structural diagrams of a specific embodiment of the present invention.
Fig. 2 is the structural diagrams of another specific embodiment of the present invention.
Number in the figure: 1 is light source, and 2 is reflector, and 3 is light-mixing machine.
The specific embodiment
Further specify the present invention in conjunction with the accompanying drawings below by embodiment.
Embodiment 1: as shown in Figure 1, reflector 2 is connected to form by two inner surfaces and a rear surface, be " ㄈ " font structure, the two ends of light-mixing machine 3 connect reflector 2 two ends respectively, light source 1 is installed in the confined space that is formed by reflector 2 and light-mixing machine 3, the inner surface of reflector 2 has plated silverskin, light-mixing machine 3 is made by frosted glass, light source 1 is made up of several LED, the inner surface shape of reflector 2 is a rectangular cavities, light source 1 is installed in its rear surface, and its light that sends is finally via light-mixing machine 3 outgoing, thus the emergent light that obtains mixing.After tested, system's light extraction efficiency has reached 89%, and light is soft evenly, and dazzle has obtained good control.
Embodiment 2: as shown in Figure 2, reflector 2 is " a concave surface of (" type structure; The two ends of light-mixing machine 3 connect reflector 2 two ends respectively, light source 1 is installed in the confined space that is formed by reflector 2 and light-mixing machine 3, the inner surface of reflector 2 has plated silverskin, light-mixing machine 3 is made by acrylic, light source 1 is made up of several LED, light source 1 is installed in the concave surface of reflector 2, and its light that sends is finally via light-mixing machine 3 outgoing, thus the emergent light that obtains mixing.After tested, system's light extraction efficiency has reached 91%, and light is soft evenly, and dazzle has obtained good control.
Claims (4)
1, a kind of high-efficiency light mixing device, comprise light source (1), reflector (2) and light-mixing machine (3), it is characterized in that reflector (2) be " ㄈ " font structure or be " in (" font structure any, the reflector (2) of " ㄈ " font structure is connected to form by two inner surfaces and a rear surface, " reflector of (" type structure is a concave surface, the two ends of light-mixing machine (3) connect reflector (2) two ends respectively, constitute airtight frame structure, light source (1) is positioned at the rear surface or the concave surface of reflector (2); The light-emitting window of light source (1) is aimed at light-mixing machine (3), its light that sends part directly penetrates by light-mixing machine (3), a part penetrates by light-mixing machine (3) after reflector (2) reflection, and remainder is through repeatedly penetrating by light-mixing machine (3) after the reflection between reflector (2) and the light-mixing machine (3).
2, high-efficiency light mixing device according to claim 1, the inner surface that it is characterized in that described reflector (2) are coated with in silverskin, aluminium film or the medium high-reflecting film any.
3, high-efficiency light mixing device according to claim 1, the material that it is characterized in that described light-mixing machine (3) be in frosted glass, opal glass or the acrylic any.
4, high-efficiency light mixing device according to claim 1 is characterized in that described light source (1) is one or more light emitting diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048262A CN101520162A (en) | 2009-03-26 | 2009-03-26 | High-efficiency light mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048262A CN101520162A (en) | 2009-03-26 | 2009-03-26 | High-efficiency light mixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101520162A true CN101520162A (en) | 2009-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910048262A Pending CN101520162A (en) | 2009-03-26 | 2009-03-26 | High-efficiency light mixing device |
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| Country | Link |
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| CN (1) | CN101520162A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318280A (en) * | 2014-06-03 | 2016-02-10 | 李果华 | Novel LED solar simulator optical system structure |
| CN113410374A (en) * | 2021-06-17 | 2021-09-17 | 中国科学院半导体研究所 | Mixed-color LED device |
-
2009
- 2009-03-26 CN CN200910048262A patent/CN101520162A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318280A (en) * | 2014-06-03 | 2016-02-10 | 李果华 | Novel LED solar simulator optical system structure |
| CN113410374A (en) * | 2021-06-17 | 2021-09-17 | 中国科学院半导体研究所 | Mixed-color LED device |
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Open date: 20090902 |