Abstract
The optimal laser spectrum for users of all ages is determined by considering the health implications of laser lighting across different age groups. We present a theoretical calculation model for age-related blue light hazard (BLH) and Circadian Action Factor (CAF), establishing optimization criteria that integrate visual and health factors. Health assessments of white laser light source spectra, obtained from the combination of RGB-LDs, were conducted using BLH and CAF at various illumination color temperatures. Based on our proposed comprehensive optimization criteria, white-light laser sources with high luminous efficacy (LER ≥ 330 lm/W), good color rendering (Ra ≥ 70), and color coordinates within the quadrangle region specified by the ANSI C78.377-2008 standard were obtained. This research provides a theoretical foundation for the personalized design and application of high-quality, healthy laser light sources for users of different ages.
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