Summary
This paper proposes a wearable multispectral sensor device capable of measuring melanopic illuminance — the ipRGC-weighted metric relevant to circadian and melatonin responses — as distinct from conventional photopic illuminance. Such a device could enable practical, real-world monitoring of personal circadian light exposure for lighting design optimization and health applications.
Key Findings
- Proposed a wearable device using multispectral sensors to approximate melanopic illuminance (ipRGC-weighted) rather than standard photopic illuminance.
- The device targets measurement of melanopsin-driven retinal ganglion cell activation, which is the key biological pathway for circadian entrainment and melatonin suppression.
Categories
The Science of Light: Proposes a wearable device using multispectral sensors to measure melanopic illuminance weighted by ipRGC (intrinsically photosensitive retinal ganglion cell) spectral sensitivity.
Sleep & Circadian Health: Melanopic illuminance measurement is directly relevant to assessing circadian light exposure and melatonin suppression in real-world settings.
Author(s)
前田侑哉， 三木光範， 坂東航
Publication Year
2019
Related Publications
The Science of Light
- Phototransduction by retinal ganglion cells that set the circadian clock
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- 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