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Proceedings Paper

Colorimetry, chromaticity space, and LEDs
Author(s): Carolyn F. Jones
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Paper Abstract

LEDs are narrow-band emission sources and present special problems in colorimetric characterization. Chromaticity space is mapped using Gaussian spectral models to represent narrow-band emission sources. The Gaussian maps show that the spectral regions are distorted and non-uniform, with a curious `warp' in the yellow. These maps do not resemble the traditional Kelley chart. The Gaussian models are used to understand effects of spectral shape on colorimetric values. The models predict the sensitivity of dominant wavelength to spectral width and spectral peak. The predictions are compared to LED measurement data. The predictions have practical implications for LED colorimetry, including measurement conditions and equipment resolution.

Paper Details

Date Published: 20 October 1998
PDF: 15 pages
Proc. SPIE 3428, Illumination and Source Engineering, (20 October 1998); doi: 10.1117/12.327953
Show Author Affiliations
Carolyn F. Jones, Hewlett-Packard Co. (United States)


Published in SPIE Proceedings Vol. 3428:
Illumination and Source Engineering
Angelo V. Arecchi, Editor(s)

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