光学精密工程2025，Vol.33Issue(21)：3364-3372,9.DOI:10.37188/OPE.20253321.3364
基于冷光学技术的地基大型望远镜多波段红外杜瓦低温光机平台
Multi-band infrared Dewar cryogenic opto-mechanical platform for ground-based large telescopes using cryogenic optics technology
摘要
Abstract
Based on cryogenic optical technology,the multi-band infrared imaging Dewar is a key compo-nent for achieving high-sensitivity infrared detection.This paper presents a cryogenic opto-mechanical plat-form operating at 100 K,developed for a multi-band infrared Dewar.Design objectives and principles were established according to system requirements,and a methodology employing flexure structures was adopted to obtain a cryogenic platform with controlled deformation.Thermal deformation of the platform was then investigated by finite element analysis(FEA)and experimentally validated.For the long-wave optical path,measured displacements of 0.37 mm in the X direction and 0.04 mm in the Z direction were obtained,while FEA predicted 0.387 mm and 0.021 mm,respectively.For the mid-wave optical path,measured displacements of 0.36 mm in the X direction and 0.03 mm in the Y direction were obtained,with FEA predicting 0.385 mm and 0.031 mm,respectively.All discrepancies between analysis and mea-surement are approximately within 0.02 mm,demonstrating the validity of the cryogenic platform design and ensuring accurate positioning of the beam splitter,long-wave imaging lens assembly,and mid-wave imaging lens assembly at cryogenic temperatures.The findings offer valuable guidance for future cryogenic opto-mechanical designs in multi-band imaging Dewar systems.关键词
冷光学/红外探测/低温光机平台/多光路Key words
cryogenic optics/infrared detection/cryogenic opto-mechanical platform/multi-optical path分类
机械制造引用本文复制引用
刘祥意,姚凯男,李宏壮,殷丽梅,郭鹏,曹玉岩,王建立..基于冷光学技术的地基大型望远镜多波段红外杜瓦低温光机平台[J].光学精密工程,2025,33(21):3364-3372,9.基金项目
吉林省自然科学基金资助项目(No.20240101309JC) （No.20240101309JC）
