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Proceedings Paper

Unique mounting for miniature optics at cryogenic temperatures
Author(s): Zachary N. Leahy; Andrew J. Magner
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Paper Abstract

This paper highlights a mounting solution for miniature, high aspect ratio Zinc Selenide (ZnSe) optics capable of sustaining high vibration loads and cryogenic temperatures. The GOES-R Advanced Baseline Imager (ABI) optical design requires ZnSe filters that have a significantly higher-than-standard aspect ratio. The thin structure, along with the material properties of ZnSe, lead to a filter that is very delicate. The mounting technique minimizes stresses induced over thermal extremes, while maintaining sufficient preload for launch loads. The filters are mounted to metallic housings using a spring loaded retainer and compliant materials. Detailed analysis of the mounting and an understanding of the unique material properties enables the design to be successful. Special attention is given to materials passing through glass transition temperatures. This design was qualified through extensive thermal cycling and vibration testing, and exhibited performance acceptable for production.

Paper Details

Date Published: 18 September 2013
PDF: 9 pages
Proc. SPIE 8836, Optomechanical Engineering 2013, 88360N (18 September 2013); doi: 10.1117/12.2025263
Show Author Affiliations
Zachary N. Leahy, Exelis, Inc. (United States)
Andrew J. Magner, Exelis, Inc. (United States)

Published in SPIE Proceedings Vol. 8836:
Optomechanical Engineering 2013
Alson E. Hatheway, Editor(s)

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