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LED light source of one kind of solar spectrum and manufacturing method thereof

A technology of LED light source and solar spectrum, applied in the field of optics, can solve problems such as difficult to control the drop-off rate of overall product color coordinates, narrow coverage of spectral color temperature and temperature, high error rate of powder mixing, etc., to achieve wide coverage of spectral color temperature, Reduce the error rate of powder mixing and improve the effect of light quality

Active Publication Date: 2018-08-17
XIAMEN XINDECO IOT & OPTPELECTRONICS TECH INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It can be seen that there are too many fluorescent powders in the above-mentioned invention, and it is not easy to control the off-grade rate of the overall product color coordinates in the light source production process, and there is a relatively high powder mixing error rate in the production process; and the achieved spectral color temperature coverage is relatively small. narrow

Method used

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  • LED light source of one kind of solar spectrum and manufacturing method thereof
  • LED light source of one kind of solar spectrum and manufacturing method thereof
  • LED light source of one kind of solar spectrum and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0064] In this embodiment, the solar spectrum-like LED light source includes two kinds of blue light chips and purple light chips, the wave bands of the two kinds of blue light chips are 445-450nm and 457.5-462.5nm respectively, and the wavelength of the purple light chip is 400nm-430nm;

[0065] Phosphor powder consists of the following components:

[0066] Green powder with an emission wavelength of 490-505nm is 8%-20%, green powder with an emission wavelength of 520-540nm is 65%-80%, and deep red powder with an emission wavelength of 640-660nm is 8%-15%.

[0067] The color temperature of the light source realized in this embodiment is 5300-5800K.

[0068] Such as figure 1 As shown, the spectral continuity of ordinary LEDs is not good, the 480-510nm energy is missing in the cyan part, and the energy is missing in the deep red part, and the spectral gap with sunlight is large, resulting in poor color rendering of the light source and poor light quality.

[0069] Such as f...

Embodiment 2

[0072] In this embodiment, the solar spectrum-like LED light source includes two kinds of blue light chips and purple light chips, the wave bands of the two kinds of blue light chips are 445-450nm and 457.5-462.5nm respectively, and the wavelength of the purple light chip is 400nm-430nm;

[0073] Phosphor powder consists of the following components:

[0074] Green powder with an emission wavelength of 490-505nm is 8%-20%, green powder with an emission wavelength of 520-540nm is 65%-80%, and deep red powder with an emission wavelength of 640-660nm is 8%-15%.

[0075] The color temperature of the light source realized in this embodiment is 3800-4300K.

[0076] Such as Figure 5 , 6 , 7, the spectrum of Example 2 has peaks in the purple light part, blue light part, cyan light part, green light and deep red light part. Among them, due to the use of two blue LED chips with different wavelengths, there are double peaks in the blue light part. Since there are many peaks in the vis...

Embodiment 3

[0079] In this embodiment, the solar spectrum-like LED light source includes two kinds of blue light chips and purple light chips, the wave bands of the two kinds of blue light chips are 445-450nm and 457.5-462.5nm respectively, and the wavelength of the purple light chip is 400nm-430nm;

[0080] Phosphor powder consists of the following components:

[0081] Green powder with an emission wavelength of 490-505nm is 8%-20%, green powder with an emission wavelength of 520-540nm is 65%-80%, and deep red powder with an emission wavelength of 640-660nm is 8%-15%.

[0082] The color temperature of the light source realized in this embodiment is 2200K-2700K.

[0083] Such as Figure 8 , 9 , 10, the spectrum of Example 3 has peaks in the purple light part, blue light part, cyan light part, green light and deep red light part. Among them, due to the use of two blue LED chips with different wavelength bands, there are double peaks in the blue light part. Since there are many peaks in ...

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Abstract

The invention relates to an LED light source of one kind of solar spectrum and a manufacturing method thereof. The fluorescent powder of a light conversion layer only has three components, flour blending is easy to perform during a production process, a flour blending error rate is reduced, a light source color coordinate file falling rate is higher than that of a technical scheme adopting more phosphors, and the file falling rate of an integral product color coordinate is easy to control during a light source production process. A spectrum realized in the invention is similar to a sunlight spectrum, and compared with the quasi-solar spectrum in the prior art, the energy of a purple light portion is increased. In the invention, a purple light chip is adopted, the energy after 430nm is high, and the spectrum is closer to the real solar spectrum. The light quality of an ordinary LED light source is poor due to the lack of dark red portion energy. The dark red phosphor with a 650 nm emission peak is adopted to complement the energy of the dark red portion so as to achieve better light quality. A latest IES Rf-Rg calculator (IES TM30-15) standard is used to assess, and Rf is greater than 95 and Rg is greater than 99. A realized spectral color temperature coverage range is wide and is from 2200K to 10000K.

Description

technical field [0001] The invention relates to the field of optics, more specifically, to a solar-like LED light source and a method for preparing the solar-like LED light source. Background technique [0002] In the prior art, the way to realize the white light LED is mainly to excite the yellow phosphor powder by the blue light LED chip. [0003] The white light realized by the above method has disadvantages such as low color rendering, mainly due to the lack of energy after cyan 490-510nm and deep red 630nm. [0004] In order to overcome the above-mentioned shortcomings, there are still some sun-like LED light sources in the prior art, but because of worrying about the damage of the purple light to the skin, the purple light has been cancelled. [0005] However, in theory, if you want to get closer to the sun-like light, the violet part cannot be missing. Moreover, if the energy of near-violet light can be controlled at an appropriate level, it will be helpful to human...

Claims

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Application Information

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IPC IPC(8): H01L33/50H01L25/075
CPCH01L25/075H01L33/504H01L2933/0041
Inventor 郭群强魏岚陈友三林松钦
Owner XIAMEN XINDECO IOT & OPTPELECTRONICS TECH INST CO LTD
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