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Proceedings Paper

Tunable birefringent filters using liquid crystal variable retarders
Author(s): Greg A. Kopp
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Paper Abstract

We discuss tunable birefringent filters utilizing liquid crystals. We have incorporated nematic liquid crystals, manufactured as electrically variable, true zero-order retarders, in Lyot and Solc filter designs to allow continuous spectral tunability. The performance characteristics and design enhancements of several assembled tunable filters are discussed. These range from narrow band (0.13 nm) filters for solar imaging to wide field of view filters for airborne remote sensing spanning the spectral range 400 - 2500 nm. Design considerations for improving field of view, speed, and transmission of liquid crystal tunable filters are discussed.

Paper Details

Date Published: 16 August 1996
PDF: 4 pages
Proc. SPIE 2873, International Symposium on Polarization Analysis and Applications to Device Technology, (16 August 1996); doi: 10.1117/12.246254
Show Author Affiliations
Greg A. Kopp, Meadowlark Optics, Inc. (United States)

Published in SPIE Proceedings Vol. 2873:
International Symposium on Polarization Analysis and Applications to Device Technology
Toru Yoshizawa; Hideshi Yokota, Editor(s)

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