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Publication

Modeling the spectrum of a luminaire including a dichroic filter by spectral ray tracing

Journal Contribution - Journal Article

Ray tracing is a useful tool in the optical design of luminaires. Usually simulations are performed at one wavelength. However, in some luminaires optical components are incorporated to alter the spectrum of the light source. In a retail environment, luminaires equipped with a dichroic filter are commonly used to enhance the attractiveness of products. In this paper, spectral ray tracing is used to model the spectral radiant intensity distribution of such a luminaire. A geometric model of the luminaire, the spectral distribution of the lamp and the spectral scattering and transmission properties of the reflector and the filter are used as input parameters. The spectral radiant intensity at several emission angles as modeled by spectral ray tracing is compared with the experimentally determined values. A very good agreement is found. Furthermore, ray tracing simulations reveal detailed information about the effect of light recycling in the luminaire on the emission spectrum.
Journal: Light & Engineering
ISSN: 0236-2945
Issue: 2
Volume: 25
Pages: 103 - 112
Publication year:2017
BOF-keylabel:yes
IOF-keylabel:yes
BOF-publication weight:0.1
CSS-citation score:1
Authors from:Higher Education
Accessibility:Open