CO2 jet flush cleaning performance monitored by surface scatter measurements

Mark E. Frink; Ron Laybon

doi:10.1117/12.22668

1 December 1990 CO₂ jet flush cleaning performance monitored by surface scatter measurements

Mark E. Frink, Ron Laybon

Proceedings Volume 1331, Stray Radiation in Optical Systems; (1990) https://doi.org/10.1117/12.22668
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

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.

Citation Download Citation

Mark E. Frink and Ron Laybon "CO₂ jet flush cleaning performance monitored by surface scatter measurements", Proc. SPIE 1331, Stray Radiation in Optical Systems, (1 December 1990); https://doi.org/10.1117/12.22668

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