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Proceedings Paper

Aberrations of asymmetric reflector design
Author(s): Feng Zhao
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Paper Abstract

Asymmetric reflector aberrations worsen illuminance uniformity and distort illuminance pattern. Using trough reflector design as an example, the aberrations are found significant in the design where the β angle coverage is in low number zones. In that situation an alternative approach could be used to achieve the same if not better illuminance uniformity. Besides target position, optical planning is also found a factor influencing the actual illuminance distribution although its impact is limited. An intensity-based reflector design method with both normalizing factor and reflector reflectance incorporated as variables is applied to compare all the designs. A new calculation method using α angle to acquire (x, y) coordinates is used to generate the reflector profiles.

Paper Details

Date Published: 18 September 2007
PDF: 8 pages
Proc. SPIE 6670, Nonimaging Optics and Efficient Illumination Systems IV, 66700B (18 September 2007); doi: 10.1117/12.730660
Show Author Affiliations
Feng Zhao, Zumtobel Lighting, Inc. (United States)

Published in SPIE Proceedings Vol. 6670:
Nonimaging Optics and Efficient Illumination Systems IV
Roland Winston; R. John Koshel, Editor(s)

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