CIE S 026/E:2018: CIE System for Metrology of Optical Radiation for ipRGC-Influenced Responses to Light

What the study found

Defines metrics for quantifying optical radiation relevant to the five retinal photoreceptor classes involved in non-visual light responses.

Limitations

Metrology does not specify a single healthful daily dose or timing schedule.

Neurodesign interpretation

This standard solves a measurement problem, not a design prescription problem. It lets studies speak the same photoreceptor language.

Possible design implications

Report eye-level spectral exposure with melanopic quantities when making non-visual lighting claims.

Why it stays in the corpus

Retain as the measurement foundation for circadian-effective light.

Study design

International standard

Population

Humans

Setting

Lighting measurement

Field

Lighting, circadian metrology

Mechanism

ipRGC and melanopsin-weighted photoreceptor stimulation

Spatial variable

Spectral light at the eye

Keywords

CIE S026, melanopsin, ipRGC, light, standard