Method for realizing solar-spectrum-like white light with low blue light harm and white-light LED

Abstract

The invention relates to a method for realizing solar-spectrum-like white light with low blue light harm and a white-light LED. The method is characterized by exciting, by blue-light chips of three main wavelength ranges, yellow phosphors, green phosphors and red phosphors to form white light. The white light obtained by the method is highly similar to the solar spectrum, close to natural light, low in blue light harm, beneficial to vision health, and particularly suitable for the field of educational illumination, and provides students with a health light environment for a long time. The white-light LED, based on the method, can form a solar-spectrum-like white light with low blue light harm in the optical principle. In the structural process, the yellow phosphors, the green phosphors, the red phosphors and an encapsulant are mixed, and then uniformly coat the surface of the blue-light chip by a centrifugal process, so that the phosphors can be uniformly excited, The wall of a reflector cup is silver plated so as to increase light reflection and increase a light extraction rate.

Description

Technical field [0001] The invention relates to the field of lighting, and more specifically, to a method for realizing solar-like spectrum white light with low blue light hazard, and a solar-like spectrum white light 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 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 blue light is too concentrated. It is not good for students to stay in this unnatural light for a long time. Healthy eyes and vision. Summary of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the prior art, and provide a method for realizing low blue light hazard solar spectrum-like white light, and a low blue light hazard solar spectrum-like white light LED, which is ...

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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