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Proceedings Article

Ghost-image analysis of Fresnel lens doublet

[+] Author Affiliations
Dennis F. Vanderwerf

3M Co. (USA)

Proc. SPIE 1331, Stray Radiation in Optical Systems, 143 (December 1, 1990); doi:10.1117/12.22674
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From Conference Volume 1331

  • Stray Radiation in Optical Systems
  • Robert P. Breault
  • San Diego, CA | July 01, 1990

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.

© (1990) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Dennis F. Vanderwerf
"Ghost-image analysis of Fresnel lens doublet", Proc. SPIE 1331, Stray Radiation in Optical Systems, 143 (December 1, 1990); doi:10.1117/12.22674; http://dx.doi.org/10.1117/12.22674


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