LED integrated optical source with adjustable color rendering index and color temperature

A color rendering index and color temperature technology, applied in electrical components, electric solid state devices, circuits, etc., can solve problems such as uneven color, color temperature and color rendering index adjustment range are not large enough, and achieve uniform color and large color temperature adjustment range , soft color effect

Active Publication Date: 2016-12-21
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this technical solution, the fluorescent powder glue is directly covered in the independent light source area, and all of them are coated with the same phosphor powder glue, resulting in uneven color, color temperature and color rendering index adjustment range is not large enough

Method used

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  • LED integrated optical source with adjustable color rendering index and color temperature
  • LED integrated optical source with adjustable color rendering index and color temperature
  • LED integrated optical source with adjustable color rendering index and color temperature

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Embodiment

[0020] like Figure 1 to Figure 3 As shown, an LED integrated light source with adjustable color rendering index and color temperature includes a substrate, and several phosphor powder cofferdams are arranged on the substrate, and several blue LEDs and red LEDs are arranged in the phosphor powder cofferdam area. Light LEDs, the blue LEDs are connected in series, the red LEDs are connected in series, and the phosphor powder cofferdams are alternately coated with YAG:Ce3+ phosphors with a color temperature of 2300-2800K and YAG:Ce3+ phosphors with a color temperature of 6000-6800K .

[0021] In the present invention, the blue LED generates a mixture of high color temperature white light and low color temperature white light by exciting two groups of different fluorescent powders, and the color temperature can be adjusted by adjusting the current of the blue LED; while the current control of the red LED can be effectively controlled. Adjust the color rendering index. That is, b...

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PUM

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Abstract

The invention discloses an LED integrated optical source with adjustable color rendering index and color temperature. The LED integrated optical source comprises a substrate, wherein a plurality of fluorescent powder cofferdams are arranged on the substrate, a plurality of blue-light LEDs and a plurality of red-light LEDs are arranged in each fluorescent powder cofferdam, the blue-light LEDs are connected in series, the red-light LEDs are connected in series, and the plurality of fluorescent powder cofferdam are alternatively coated with YAG:Ce<3+> fluorescent powder having a color temperature of 2,300-2,800K and YAG:Ce<3+> fluorescent powder having a color temperature of 6,000-6,800K.

Description

technical field [0001] The invention relates to the technical field of semiconductor optoelectronics and optical manufacturing, in particular to an LED integrated light source with adjustable color rendering index and color temperature. Background technique [0002] Traditional intelligent adjustable LEDs mainly focus on the adjustment of color temperature, but rarely involve the adjustment of color rendering index. The existing LED lights on the market are all pursuing high color rendering in order to restore and display the inherent colors of objects. However, in special occasions, the adjustment of color rendering can effectively adjust the atmosphere and achieve the expected impact on people's psychology. At this time, it is particularly important to adjust the color rendering index and color temperature at the same time. [0003] At present, the existing technology is to adjust the color temperature of the LED integrated light source by controlling the light emission ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/075H01L33/48H01L33/50
CPCH01L25/0753H01L33/48H01L33/504H01L33/508
Inventor 郭志友周腾飞黄晶郭敏孙杰衣新燕杨晛孙慧卿
Owner SOUTH CHINA NORMAL UNIVERSITY
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