期刊
FRONTIERS IN BUILT ENVIRONMENT
卷 8, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fbuil.2022.1019460
关键词
light adaptation; ipRGCs; non-image-forming effect; pupillary light reflex; complex luminance distribution; action spectrum
资金
- National Key R&D Program of China
- [2018YFC0705100]
Light adaptation is crucial for maintaining the sensitivity of the visual system to different levels of illumination, and it plays a significant role in brightness perception, visual performance, and glare evaluation. The discovery of Intrinsically Photosensitive Retinal Ganglion Cells (ipRGCs) has provided a new perspective on understanding the regulation of light adaptation. This paper provides a comprehensive analysis of forty-five studies on light adaptation, with a focus on non-image-forming effect, to help researchers in studying light adaptation in complex luminance environments.
Light adaptation is very important to keep the visual system acutely sensitive to scene content over a wide range of illumination, and has strong influence on brightness perception, visual performance and glare evaluation. The estimation method for the light adaptation state under real circumstances is a big pending topic for lighting industry. The discovery of Intrinsically Photosensitive Retinal Ganglion Cells (ipRGCs) has offered us an exciting entry point to comprehend how light adaptation is regulated. In this paper, we made a comprehensive and thorough analysis of forty-five studies focusing on light adaptation with the emerging knowledge on non-image-forming effect (NIF), to help researchers facilitate the research on light adaptation under complex luminance distribution. From the review, we can have the following outputs: 1) NIF may directly mediate the function of luminance adaptation, and we can take pupillary light reflex (PLR) as an objective indicator for the adaptation; 2) the action spectra of light adaptation may not be a fixed formula like V(lambda), but may vary dynamically with luminance level; 3) there is high necessity to conduct research on light adaptation within a natural and complex environment. All these outputs can provide us a new perspective on light adaptation in visual system research.
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