Summary
This paper introduces a new methodology for analyzing lighting environments that goes beyond visual metrics to incorporate the non-image-forming effects of light, particularly the inhomogeneous distribution of intrinsically photosensitive retinal ganglion cells (ipRGCs). Practically, this approach can help lighting designers better evaluate and optimize circadian-effective lighting in built environments.
Key Findings
- Both human and animal studies confirm an inhomogeneous distribution of ipRGCs across the retina, which should be factored into luminous environment analysis for NIF effects.
- The proposed method accounts for spatial distribution of ipRGCs and their spectral sensitivity as distinct from traditional photopic luminance metrics used in standard lighting design.
Categories
The Science of Light: Proposes a new analytical method for evaluating luminous environments that accounts for non-image-forming (NIF) effects driven by ipRGC distribution and spectral sensitivity.
Sleep & Circadian Health: The method is relevant to designing lighting that appropriately stimulates circadian pathways, with implications for entrainment and melatonin regulation.
Author(s)
P Khademagha, MBC Aries
Publication Year
2017
Number of Citations
6
Related Publications
The Science of Light
- Phototransduction by retinal ganglion cells that set the circadian clock
- Color appearance models
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- Diminished pupillary light reflex at high irradiances in melanopsin-knockout mice
- Melanopsin is required for non-image-forming photic responses in blind mice
Sleep & Circadian Health
- Phototransduction by retinal ganglion cells that set the circadian clock
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- The two‐process model of sleep regulation: a reappraisal
- Melanopsin is required for non-image-forming photic responses in blind mice
- Strange vision: ganglion cells as circadian photoreceptors