Summary
This paper presents the design of a variable-spectrum office luminaire (2700K–6500K in 500K steps) that balances circadian metrics—Equivalent Melanopic Lux, Melanopic Daylight Equivalent Illuminance, and Circadian Stimulus—with energy efficiency and visual comfort. The luminaire offers a practical, integrated approach for lighting designers seeking to address both visual and non-visual (biological) effects in workplace environments while minimizing environmental impact.
Key Findings
- Luminaire covers a correlated colour temperature range of 2700K to 6500K in 500K steps, enabling dynamic spectral tuning for circadian support.
- Key non-visual metrics calculated at each CCT step: Equivalent Melanopic Lux (EML), Melanopic Daylight Equivalent Illuminance (MEDI), and Circadian Stimulus (CS).
- Peak melanopic activation is associated with 460–480 nm short-wavelength light, which inhibits melatonin and increases alertness—informing the spectral design choices.
Categories
The Science of Light: Paper calculates and applies key non-visual lighting metrics (Equivalent Melanopic Lux, Melanopic Daylight Equivalent Illuminance, Circadian Stimulus) across a variable CCT range for a human-centric luminaire.
Workplace Performance: Luminaire is designed specifically for office installations to regulate biological rhythms, alertness, and mood of occupants.
Sleep & Circadian Health: Design targets melatonin regulation through variable spectrum lighting (2700K–6500K) to support circadian entrainment.
Author(s)
EN Madias, E Patrikios, C Grigoropoulos
Publication Year
2022
Number of Citations
2
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