To investigate the relationship between refresh frequency and human visual comfort in lighting, an experiment was designed based on subjective emotion and physiological parameters. The impact of three monochromatic light (red 623 nm, green 537 nm, and blue 445 nm) and two different white lighting (3000 K, 6500 K) were also examined. According to experimental results, each lighting has a frequency that is most comfortable in the situation of non-static light. Although both dynamic and static light have an effect on human physiological parameters, it is clear that dynamic light causes more significant changes. A physiological analysis found that lower light flicker frequencies and red/blue flicker had the greatest effect on visual acuity, and that changes were greater in myopic than orthoptic eyes. The findings demonstrate that the refresh frequency of lighting has impacts on physiological parameters as well as subjective emotions.
High luminous efficiency and good colour rendering are the goals of white light spectral optimisation, improving the quality of light and creating a comfortable light environment is the direction of research. The goal of the work is to establish a multi-channel spectral optimization technique for light emitting diodes (LEDs) based on visual advantages. Using actual LED parameters as input, the traditional colour rendering index (Ra) and a stricter colour tolerance was used as constraints in the visual evaluation. Specifically, Ra>90, luminous efficacy of radiation (LER)>300, color tolerance less than five SDCM. Those that satisfy all three conditions at the same time are used as the solution set for intermediate vision evaluation. The results of the study show that at least four channels are used to satisfy the constraints. Additionally, we examined the relationship between S/P values and color temperature (CCT) when using intermediate vision, and the findings indicate that LED light sources with higher color temperatures are better suited for these situations.
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