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Optical Engineering

Achieving uniform efficient illumination with multiple asymmetric compound parabolic luminaires
Author(s): Jeffrey M. Gordon; Peter Kashin
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Paper Abstract

Luminaire designs based on multiple asymmetric nonimaging compound parabolic reflectors are proposed for 2-D illumination applications that require highly uniform far-field illuminance, while ensuring maximal lighting efficiency and sharp angular cutoffs. The new designs derive from recent advances in nonimaging secondary concentrators for line-focus solar collectors. The light source is not treated as a single entity, but rather is divided into two or more separate adjoining sources. An asymmetric compound parabolic luminaire is then designed around each half-source. Attaining sharp cutoffs requires relatively large reflectors. However, severe truncation of the reflectors renders these devices as compact as many conventional luminaires, at the penalty of a small fraction of the radiation being emitted outside the nominal cutoff. The configurations that maximize the uniformity of far-field illuminance offer significant improvements in flux homogeneity relative to alternative designs to date.

Paper Details

Date Published: 1 January 1994
PDF: 6 pages
Opt. Eng. 33(1) doi: 10.1117/12.149154
Published in: Optical Engineering Volume 33, Issue 1
Show Author Affiliations
Jeffrey M. Gordon, National Univ. of Singapore (Israel)
Peter Kashin, Ben-Gurion Univ. of the Negev (Israel)


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