Solar spectrum and black-body radiation spectrum simulation system based on quantum dot LED

Abstract

The invention belongs to the technical field of simulation light sources, and particularly relates to a solar spectrum and black-body radiation spectrum simulation system based on a quantum dot LED. The system comprises a light source module, a light dimming system, a focusing lens, a light mixer and a light distribution lens group, wherein the light source module comprises K monochromatic light quantum dot LED light sources or ultraviolet LED light sources with different peak wavelengths; the focusing lens converges monochromatic light to the light mixer at the public focal point of the focusing lens, and the light mixer mixes the monochromatic light into simulated sunlight or simulated black-body radiation light within the wavelength of 200-1,200 nm; and finally, the monochromatic light is emergent through the light distribution lens group. According to the solar spectrum and black-body radiation spectrum simulation system, during synthesis of a target spectrum, under an ideal implementation condition, the association coefficient r of synthesized light and the target spectrum within 400-730 nm is greater than 0.99, and the color temperature deviation delta CCT is less than 100 K; and generally, the developing index Ra is greater than 98, the special developing indexes from R1 to R15 are all greater than 96, and the color tolerance difference SDCM is less than 1.

Description

technical field [0001] The invention belongs to the technical field of simulated light sources, and in particular relates to a solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LEDs. Background technique [0002] Quantum dots are fluorescent nanomaterials, made of semiconductor materials synthesized from zinc, selenium, cadmium, sulfur and other elements, with a diameter of 2−10 nm. The quantum confinement effect of quantum dots is very obvious. It can confine the carriers in the semiconductor to a very small space. Once the carriers are stimulated by light or electricity, the carriers will be excited and jump to a higher energy level. . When these carriers return to their original lower energy levels, they emit visible light of a fixed wavelength. Compared with traditional fluorescent materials, the advantage of quantum dots is that the luminous wavelength can be adjusted by the size of quantum dots. The smaller the diameter of quantum...

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Problems solved by technology

[0005] The simulated spectrum obtained using the above method is difficult to match the real solar spectrum or black body radiation spectrum with a high correlation coefficient, in fact, its deviation is always large

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