AN ATHERMALIZATION LENS BARREL STRUCTURE FOR IR OPTICAL SYSTEM

A. Ho-Soon Yang, B. Hagyong Kihm, C. Il Kweon Moon, D. Gil-Jae Jung, E. Se-Chol Choi, F. Kyung- Joo Lee, G. Hong-Yeon Hwang, H. Sug-Whan Kim, I. Yun-Woo Lee

Abstract

We have developed an athermalization barrel containing 4 IR lenses. It consists of two materials with different coefficients of thermal expansion (Invar and aluminum). A finite element analysis and the experiment data showed that this new athermalization barrel has a defocus error sensitivity of 8.1 nm/°C, which satisfies our requirement for high resolution camera.

Keywords

IR, athermalization, barrel, Invar

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IMEKO-WC-2012-TC15-O1.pdf

DOI

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IMEKO TC

TC15 - Experimental Mechanics

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