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Optical Engineering

Influence of water ice absorption on transmission for a 10.5 to 12.5 μm filter window
Author(s): Frank Jacyszyn; Samuel F. Pellicori
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Paper Abstract

We present a study of the effects of a layer of water ice on the transmission of an infrared bandpass filter/window in the 10.5- to 12.5-μm spectral band. Computed spectral transmission is presented for a model consisting of water ice thicknesses of 20, 200, 2000, and 20,000 nm on the blocking stack side of a bandpass filter design. A ray angle of 20 deg is used to simulate the conditions at a filter situated in front of a cooled detector, where water ice might accumulate. The results show severe degradation in transmission for water ice thicknesses greater than 200 nm.

Paper Details

Date Published: 1 September 1992
PDF: 3 pages
Opt. Eng. 31(9) doi: 10.1117/12.58852
Published in: Optical Engineering Volume 31, Issue 9
Show Author Affiliations
Frank Jacyszyn, Westinghouse (United States)
Samuel F. Pellicori, Pellicori Optical (United States)

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