Summary
This paper reviews existing light-dosimetry studies and proposes a standardized framework for quantifying personal light exposure using wearable sensors, addressing the inconsistency in metrics that currently hinders cross-study comparability. For lighting designers and researchers, this work provides practical guidance on selecting appropriate metrics for characterizing light exposure characteristics that drive circadian and other non-visual effects, supported by an open-source R-package for analysis.
Key Findings
- Multiple conflicting metrics have been used across light-dosimetry studies for each light characteristic (e.g., intensity, spectrum, timing, pattern), severely limiting comparability and interpretation of results.
- The review identifies and describes key quantification metrics for each characteristic known to modulate non-visual light responses, providing example calculations and standardized definitions.
- An openly accessible R-package is provided to facilitate consistent application of the identified metrics across future light-dosimetry studies.
- The paper proposes a consensus framework covering the full light-dosimetry pipeline from sensor selection to data quantification, intended to serve as a foundation for community-wide guidelines.
Categories
The Science of Light: Reviews and systematizes quantification metrics for personal light exposure dosimetry, directly addressing melanopic EDI, spectral sensitivity, and lighting measurement standards for non-visual effects research.
Sleep & Circadian Health: The framework is specifically aimed at improving measurement of light exposure patterns that modulate non-visual (circadian) responses in real-life settings.
Author(s)
SL Hartmeyer, M Andersen
Publication Year
2023
Number of Citations
4
Related Publications
The Science of Light
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Sleep & Circadian Health
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- Melanopsin is required for non-image-forming photic responses in blind mice
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