LED light source module group and its white light generation method
A technology of LED light source and module, which is applied in the direction of light source combination, light source, point light source, etc. It can solve the problems of high lighting rate, poor color rendering, inconsistent chip light decay, etc., and achieve good color temperature effect and color rendering high effect
Inactive Publication Date: 2009-05-13
XIAMEN TOPSTAR LIGHTING
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Although the above-mentioned method can be used to prepare white light LEDs with low color temperature and high color rendering, this method still has the following technical disadvantages: first, the low color temperature white light generated by packaging with YAG phosphor has poor color rendering; , the white light generated by using red powder packaging has a small light effect; third, the white light generated by using red powder and blue packaging is unstable, and the light rate is high when lit for a long time; fourth, the white light generated by RGB three-color mixing has a low color temperature, but the R , G, and B chips have inconsistent light attenuation, and the color temperature drifts seriously
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[0019] Please check figure 1 as well as figure 2 , which respectively depict a schematic top view and a schematic front view of the LED light source module of this embodiment. An LED light source module includes a light guide plate 10 , a first LED light emitting unit 20 and a second LED light emitting unit 30 .
[0020] The light guide plate 10 is used for light guide, reflection and refraction. The light guide plate 10 is an acrylic transparent plate, on which there are dots 11 for reflection and refraction, wherein the dots of the light guide plate 10 are hemispherical dots, and the closer the dot radius is to the second LED light-emitting unit 30, the smaller the radius is. Small, that is, the smaller the radius of the dots located on the side, the larger the radius of the dots located in the middle, such as figure 1 As shown (the middle of the light guide plate 10 is replaced by ellipsis for the sake of simplification of the drawings and the convenience for readers to...
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The invention discloses an LED light source module and a method thereof for generating white light. The LED light source module comprises a first LED light-emitting unit, a second LED light-emitting unit and a light guide plate; a first light which is emitted by the first LED light-emitting unit and a second light which is emitted by the second LED light-emitting unit can be synthesized into the white light; the first LED light-emitting unit and the second LED light-emitting unit are separately arranged, and the light emitted by the two is synthesized into the white light by the light guide plate. The technical proposal has the advantages that: as the first LED light-emitting unit and the second LED light-emitting unit are separately arranged and the light which is generated by the two is synthesized into the white light, the white light has good low color temperature effect and high color-rendering property.
Description
[0001] Field [0002] The invention relates to an LED light source and a method for generating white light, in particular to an LED light source module and a method for generating white light. Background technique [0003] As we all know, there are many ways to make white LEDs, for example: first, it is synthesized by red, green and blue three primary color LEDs; second, blue LED + yellow (YAG) phosphor; third, ultraviolet LED + three primary color phosphors and multi-layer Organic electroluminescence (OLED), etc., among which, the "blue LED + yellow phosphor" method is now the mainstream of white LED technology. In order to prepare white light LEDs with low color temperature and high color rendering, the following methods are added to the above method: phosphor (red powder) conversion method, RGB three-color light mixing, and the like. Although the above-mentioned method can be used to prepare white light LEDs with low color temperature and high color rendering, this method ...
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IPC IPC(8): F21V8/00F21V19/00F21Y101/02F21Y113/00F21Y103/10F21Y105/16F21Y115/10
Inventor 张英余鹭帆廖国春
Owner XIAMEN TOPSTAR LIGHTING