# Athermalization of an Optical System Based on Lens Shape and Assembly Method

• Xu, Sihua (Laboratory of Science and Technology on Integrated Logistics Support, National University of Defense Technology) ;
• Peng, Xiaoqiang (Laboratory of Science and Technology on Integrated Logistics Support, National University of Defense Technology) ;
• Tie, Guipeng (Laboratory of Science and Technology on Integrated Logistics Support, National University of Defense Technology) ;
• Guan, Chaoliang (Laboratory of Science and Technology on Integrated Logistics Support, National University of Defense Technology) ;
• Hu, Hao (Laboratory of Science and Technology on Integrated Logistics Support, National University of Defense Technology) ;
• Xiong, Yupeng (Laboratory of Science and Technology on Integrated Logistics Support, National University of Defense Technology)
• Received : 2019.07.11
• Accepted : 2019.08.17
• Published : 2019.10.25
• 13 3

#### Abstract

Temperature adaptability is an important metric for evaluating the performance of an optical system. The temperature characteristics of the optical system are closely related to the material and shape of its lens. In this paper, we establish a mathematical model relating the temperature characteristics to the shape and material of the lens. Then a novel assembly structure that can solve the lens constraint and positioning problem is proposed. From those basics, the correctness of the theoretical model and the effectiveness of the assembly structure are verified through simulated analysis of the imaging quality of the optical system, whose operating temperature range is $-60{\sim}100^{\circ}C$.

#### Keywords

Optical system;Athermalization;Temperature characteristics of focus;Thermal deformation;Assembly structure

#### Acknowledgement

Supported by : National Natural Science Foundation of China