Thermal difference analysis and athermalization Design of infrared optical system
会议名称：《2010亚洲光电子会议光学设计和检验分会场》
会议日期：2010年
学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程]
关 键 词：infrared optical system thermal aberration athermalization passive mechanical athermalization
摘 要：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 *** 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 *** from single lens,the thermal difference caused by temperature changing was analyzed,and the relationship between temperature and focus shift was *** optical tube thermal expansion,a set of equations to estimate the thermal difference of lens group was ***,an infrared optical imaging system that can work under the temperature range of-40℃ to 60℃ was design according to athermal technique,in which a new mechanical passive temperature compensation was *** simulation,the athermalization design could make imaging plane shift the *** simulation results coincided with the theoretical formula,and the design had reference value in engineering.