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Proceedings Paper

Optimizing lens barrel design compensating thermal expansion by athermalization analysis
Author(s): Seungeun Oh; Jinsuk Hong; Hyungbae Kim; Jaeuk So; Munshin Jo; Kyoungmuk Lee; Jeeyeon Yoon; Dai Ho Ko; Eung-shik Lee
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Paper Abstract

The designed infra-red optical system requires the thermal compensation of 3.5 um according to the environmental thermal variation. To compensate the depth of focus, the mechanical barrel should move not only the amount of movement required but also the appropriate direction. However, the current single shell structure cannot compensate the amount and direction required. To achieve the goal, a multi-layer shell structure is required. However, it is highly limited to select the material appropriate for the space craft. As a result, the goal of 3.5 um and required direction is achieved with multi-material shell structure.

Paper Details

Date Published: 18 November 2019
PDF: 5 pages
Proc. SPIE 11196, Infrared, Millimeter-Wave, and Terahertz Technologies VI, 1119611 (18 November 2019); doi: 10.1117/12.2537086
Show Author Affiliations
Seungeun Oh, Hanwha Systems Co. (Korea, Republic of)
Jinsuk Hong, Hanwha Systems Co. (Korea, Republic of)
Yonsei Univ. (Korea, Republic of)
Hyungbae Kim, Hanwha Systems Co. (Korea, Republic of)
Jaeuk So, Hanwha Systems Co. (Korea, Republic of)
Munshin Jo, Hanwha Systems Co. (Korea, Republic of)
Kyoungmuk Lee, Hanwha Systems Co. (Korea, Republic of)
Jeeyeon Yoon, KARI (Korea, Republic of)
Dai Ho Ko, KARI (Korea, Republic of)
Eung-shik Lee, KARI (Korea, Republic of)


Published in SPIE Proceedings Vol. 11196:
Infrared, Millimeter-Wave, and Terahertz Technologies VI
Cunlin Zhang; Xi-Cheng Zhang; Masahiko Tani, Editor(s)

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