ipRGCs
Definition:ipRGCs (intrinsically photosensitive retinal ganglion cells) are a class of retinal cells that contain the photopigment melanopsin. They respond directly […]
Circadian Stimulus (CS)
Definition:Circadian stimulus (CS) is a metric developed by the Lighting Research Center (LRC) to estimate the acute melatonin-suppression response to
Human-centric Lighting
Definition:Human-centric lighting (HCL) is an approach to lighting that prioritises people’s needs across visual performance, comfort, wellbeing and biology. It
WELL Building Standard
Definition:The WELL Building Standard is a performance-based certification system for measuring, certifying, and monitoring features of the built environment that
CIE S 026
Definition:CIE S 026 is the international standard published by the International Commission on Illumination (CIE) that defines a system for
Circadian Lighting
Definition:Circadian lighting is the design and implementation of lighting systems that support the human body’s natural biological rhythms — the
Melanopic Equivalent Daylight Illuminance (Melanopic EDI)
Definition:Melanopic Equivalent Daylight Illuminance (EDI), sometimes abbreviated as MEDI, expresses melanopic light in terms of its biological equivalence to standard
Designing for the body clock: Validate circadian lighting with PhotoSpec Labs
Design healthier spaces with precision light monitoringPhotoSpec Labs helps architects and lighting designers validate circadian-effective light using wearable, spectral data
Melanopic Lux – What is this unit?
Definition Melanopic illuminance is a measurement of light that reflects its effectiveness in stimulating melanopsin-containing photoreceptors in the eye —
What is a Melanopic Light Dosimeter? A Guide to Measuring Circadian Light Exposure
Introduction: Why light is more than just brightness Most people associate light with visibility. But for the human body, light