A method of realizing solar-like spectrum white light with low blue light hazard and white light LED

Abstract

The invention relates to a method for realizing solar spectrum white light with low blue light hazard and a white light LED. In the method of the present invention, the blue light chips in three main wavelength ranges respectively excite yellow phosphor powder, green phosphor powder and red phosphor powder to form white light. The white light obtained by the method of the present invention is highly similar to the solar spectrum, closer to natural light, and less harmful to blue light, which is more conducive to eye and vision health, and is especially suitable for the field of educational lighting, providing students with long-term eye health. light environment. The white light LED of the present invention, based on the method, can form solar-like white light with low blue light hazards in terms of optical principles. In terms of structural technology, after mixing yellow phosphor, green phosphor, red phosphor and encapsulant, they are uniformly coated on the surface of the blue chip through a centrifugal process, so that the phosphor can be evenly excited; the cup wall of the reflective cup is silver-plated , can increase light reflection and improve light output rate.

Description

technical field [0001] The present invention relates to the field of lighting, and more specifically, to a method for realizing a solar spectrum white light with low blue light hazard, and a solar spectrum white LED with low blue light hazard. Background technique [0002] At present, more and more schools use LED light sources and LED lamps as teaching lighting. However, the common LED light source mostly uses a single blue light chip to excite yellow phosphor to form white light, the spectral distribution is missing, which is far from natural light, and the energy of the blue light is too concentrated, and it is not conducive to students to stay in this unnatural light environment for a long time eye health. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a method for realizing a solar-like spectrum white light with low blue light hazards, and a kind of solar-like spectrum white light LE...

AI Technical Summary

Problems solved by technology

However, the common LED light source mostly uses a single blue light chip to excite yellow phosphor to form white light, the spectral distribution is missing, which is far from natural light, and the energy of the blue light is too concentrated, and it is not conducive to students to stay in this unnatural light environment for a long time eye vision health

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