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Proceedings Paper

Rugged far infrared bandpass filters
Author(s): P. G. Huggard
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Paper Abstract

Precision nickel printing screens are shown to be very useful as far infrared bandpass filters. For a range of such regularlyperforated screens, transmission maxima have been observed to lie at frequencies between 58 cm-1 and 142 cm-1. In general,the peak of transmission is measured to be over 0.9. It is found that this high transmission is little degraded by cascadingseveral screens, but the overall filter Q value may be increased from about 2 to a value of about 6.

Paper Details

Date Published: 30 August 1993
PDF: 2 pages
Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 21044Y (30 August 1993); doi: 10.1117/12.2298610
Show Author Affiliations
P. G. Huggard, Univ. Regensburg (Germany)

Published in SPIE Proceedings Vol. 2104:
18th International Conference on Infrared and Millimeter Waves
James R. Birch; Terence J. Parker, Editor(s)

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