Summary
This paper critiques the CIE 1924 V(位) luminous efficiency function for excluding short-wavelength (S-cone) photoreceptor contributions, limiting its accuracy for predicting visual acuity in artificially lit environments. Lighting designers should consider spectral power distributions beyond standard photopic metrics to better support visual performance and comfort.
Key Findings
- The CIE V(位) function adopted in 1924 only weights long- and medium-wavelength photoreceptor contributions, omitting short-wavelength cone input relevant to visual acuity.
- Standard photopic lighting metrics are insufficient to fully characterize human visual system performance under artificial light, suggesting the need for broader spectral considerations in lighting design.
Categories
The Science of Light: Discusses photoreceptor biology, spectral sensitivity functions, and the limitations of the CIE V(位) standard observer for capturing full human visual response.
Eye Health & Vision: Examines visual acuity and the conditions under which the human visual system performs optimally under artificial lighting.
Author(s)
C Wheeler
Publication Year
2016
Number of Citations
1
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