Summary
This study compares circadian light delivery in rooms equipped with Low-E glazing versus clear glass windows with optimized shading, providing guidance for architectural decisions that affect occupant circadian health. The findings can inform building design choices where maximizing biologically effective daylight is a priority, such as in offices, hospitals, or residential spaces.
Key Findings
- Clear glass windows with optimized shading outperformed Low-E glazing in circadian light distribution across the interior space
- Low-E glazing, despite its thermal performance benefits, was found to reduce circadian-effective light transmission compared to the clear glass with shade configuration
- The study highlights a trade-off between energy efficiency (Low-E glass) and circadian light quality that designers must consider
Categories
Sleep & Circadian Health: Investigates how different glazing and shading configurations affect circadian light distribution in interior spaces.
The Science of Light: Compares melanopic/circadian light metrics across different window and glazing conditions to evaluate spectral and photometric performance.
Author(s)
H Arjmand Mazidi
Publication Year
2019
Related Publications
Sleep & Circadian Health
- Phototransduction by retinal ganglion cells that set the circadian clock
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- The two‐process model of sleep regulation: a reappraisal
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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