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18 November 2019 Optimizing lens barrel design compensating thermal expansion by athermalization analysis
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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.
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Seungeun Oh, Jinsuk Hong, Hyungbae Kim, Jaeuk So, Munshin Jo, Kyoungmuk Lee, Jeeyeon Yoon, Dai Ho Ko, and Eung-shik Lee "Optimizing lens barrel design compensating thermal expansion by athermalization analysis", Proc. SPIE 11196, Infrared, Millimeter-Wave, and Terahertz Technologies VI, 1119611 (18 November 2019); https://doi.org/10.1117/12.2537086
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