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Proceedings Paper

Ghost-image analysis of Fresnel lens doublet
Author(s): Dennis F. Vanderwerf
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Paper Abstract

Fresnel lenses, when used as light condensors, generate many spurious ghost images due to multiple refraction and reflection of light between the facets and risers. In some applications, such as overhead projection, these images can be visible to the user. Using the technique of nonsequential ray tracing, the origin, direction, and intensity of these ghost images are analysed for two types of Fresnel lens doublet systems. Techniques for the reduction or elimination of these ghost images are also discussed.

Paper Details

Date Published: 1 December 1990
PDF: 15 pages
Proc. SPIE 1331, Stray Radiation in Optical Systems, (1 December 1990); doi: 10.1117/12.22674
Show Author Affiliations
Dennis F. Vanderwerf, 3M Co. (United States)

Published in SPIE Proceedings Vol. 1331:
Stray Radiation in Optical Systems
Robert P. Breault, Editor(s)

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