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长春光学精密机械与物... [1]
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会议论文 [1]
发表日期
2010 [1]
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专题:长春光学精密机械与物理研究所
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Thermal difference analysis and athermalization design of infrared optical system (EI CONFERENCE)
会议论文
Optical Design and Testing IV, October 18, 2010 - October 20, 2010, Beijing, China
Ai X.-Q.
;
Liu B.
;
Zhang X.
;
Jia H.
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提交时间:2013/03/25
When infrared optical system works in a large temperature range
the thermal effect of optical lens and optical tube will produce image plane shift and lead to imaging quality deterioration. In order to eliminate the thermal aberration
the athermalization design principles of infrared optical system were introduced
and some commonly used methods of thermal difference compensation were described. Proceeding from single lens
the thermal difference caused by temperature changing was analyzed
and the relationship between temperature and focus shift was obtained. Considering optical tube thermal expansion
a set of equations to estimate the thermal difference of lens group was given. Finally
an infrared optical imaging system that can work under the temperature range of -40C to 60C was design according to athermal technique
in which a new mechanical passive temperature compensation was proposed. Through simulation
the athermalization design could make imaging plane shift the smallest. The simulation results coincided with the theoretical formula
and the design had reference value in engineering. 2010 Copyright SPIE - The International Society for Optical Engineering.
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