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Light-emitting device

A technology for light-emitting devices and light-emitting arrays, which can be applied to lighting devices, optics, light sources, etc., and can solve problems such as thickness and thickness.

Active Publication Date: 2011-04-13
EPISTAR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the light mixing effect, it is necessary to increase the space of the package so that the optical components have a sufficient height, so that the thickness of the general package is relatively thick

Method used

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Examples

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Embodiment Construction

[0068]As shown in FIGS. 1A-1B , in one embodiment, a light emitting device 1 includes a carrier 10 , a first optical element 11 and at least three light sources emitting color lights with different wavelengths, such as R, G and B LED chips. Fig. 1A is a top view of the light emitting device 1, and Fig. 1B is a cross-sectional view of the light emitting device 1 at the tangent line T-T'. As shown in FIG. 1B , the carrier 10 includes a groove 101, wherein a first position 1011, a second position 1012 and a third position 1013 are located in the groove 101 on an inner wall 1014 of the groove 101. On the surface, the three light sources of R, G and B are respectively located at the first position 1011 , the second position 1012 and the third position 1013 , but they can be arranged and adjusted according to requirements. The first optical element 11 covers the groove 101 . Wherein, the distance between the first position 1011 , the second position 1012 and the third position 1013...

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Abstract

The invention discloses a light-emitting device, which comprises a plurality of light sources, a carrier and an optical element. At least three light sources on the carrier can emit chromatic light with different wavelengths. The lights emitted from the light sources are mixed effectively by the design of the optical element and the carrier, such as even white light.

Description

technical field [0001] The invention relates to a light emitting device, in particular to a light emitting device with at least three light sources, a carrier and at least one optical element. Background technique [0002] The white light generated by the white light source is usually formed by mixing different primary-color lights emitted by red (R) light-emitting diodes (Light-Emitting Diode; LED), green (G) LEDs, and blue (B) LEDs. Since the light emitted by the LED light source is in the Lambertian mode, that is, there is no scattering in a specific direction, generally adding scattering particles in the optical element can make the mixed light of the R, G, and B light-emitting diodes achieve a uniform light effect, but it will Reduce light extraction efficiency. In order to improve the light mixing effect, it is necessary to increase the space of the package so that the optical element has a sufficient height, so that the thickness of the general package is relatively ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L25/075F21K7/00G02F1/13357F21Y101/02F21K99/00F21Y107/10F21Y115/10
Inventor 许嘉良吴俊毅
Owner EPISTAR CORP