Abstract
With the discovery of intrinsically photosensitive retinal ganglion cells, we have a better understanding of the non-visual effects of lighting. In this study, the optimum spectral power distribution in sunlight of different color temperatures is calculated by MATLAB software. At the same time, the ratio of the non-visual effect and visual effect (K e,α ) at different color temperatures is calculated according to the sunlight spectrum to evaluate the non-visual and visual effects of white LEDs at the corresponding color temperature. Then based on the characteristics of monochromatic LED spectra, the joint-density-of-states model is used as a mathematical model, and the optimal solution is calculated for its database. According to the calculated combination scheme, Light Tools software is used to optimize and simulate the expected light source parameters. The final color temperature is 7525K, the color coordinate is (0.2959, 0.3255), and the color rendering index reaches 92. The high efficiency light source has not only the function of lighting, but also the effect of improving work efficiency with lower blue light hazard efficiency of radiation than normal LEDs.
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