中小型共光路系统支撑结构设计与分析

Q4 Physics and Astronomy
YANG Xiaoqiang, TAO Zhong, LIU Yingqi
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引用次数: 0

摘要

主、次镜支撑技术是共光路光学系统的关键技术之一。针对在±60℃温度变化范围内工作的机载共光路光学系统,根据热膨胀系数匹配原则分别选择殷钢和ULE、钛合金和K9配对作为主、次镜及支撑结构的材料,并设计了高刚度无热化柔性支撑结构。最后,利用自研的光机联合仿真程序对主、次镜面型及整个光学系统的成像质量进行了光机一体化分析。分析结果表明:殷钢和ULE配对时,在±60 ℃均匀温差和10 ℃轴向、径向温度梯度下,主、次镜去除离焦后面型优于(1/100)λ,整个光学系统点列图RMS半径小于艾里斑半径,相面中心波前优于(1/50)λ,MTF@63 lp/mm优于0.45,无热化柔性支撑的一阶固有频率高达263 Hz;钛合金和K9配对时,60 ℃均匀温差下系统成像指标满足使用要求,10 ℃轴向、径向温度下成像质量无法满足使用要求。对装调完的殷钢和ULE配对光机系统进行了低温下分辨率测试,分辨率无明显变化,说明设计及分析可行。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design and analysis of support structure of small and medium-sized common optical path system
主、次镜支撑技术是共光路光学系统的关键技术之一。针对在±60℃温度变化范围内工作的机载共光路光学系统,根据热膨胀系数匹配原则分别选择殷钢和ULE、钛合金和K9配对作为主、次镜及支撑结构的材料,并设计了高刚度无热化柔性支撑结构。最后,利用自研的光机联合仿真程序对主、次镜面型及整个光学系统的成像质量进行了光机一体化分析。分析结果表明:殷钢和ULE配对时,在±60 ℃均匀温差和10 ℃轴向、径向温度梯度下,主、次镜去除离焦后面型优于(1/100)λ,整个光学系统点列图RMS半径小于艾里斑半径,相面中心波前优于(1/50)λ,MTF@63 lp/mm优于0.45,无热化柔性支撑的一阶固有频率高达263 Hz;钛合金和K9配对时,60 ℃均匀温差下系统成像指标满足使用要求,10 ℃轴向、径向温度下成像质量无法满足使用要求。对装调完的殷钢和ULE配对光机系统进行了低温下分辨率测试,分辨率无明显变化,说明设计及分析可行。
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来源期刊
光学应用
光学应用 Physics and Astronomy-Atomic and Molecular Physics, and Optics
CiteScore
1.00
自引率
0.00%
发文量
5894
期刊介绍: Journal of Applied Optics was founded in 1980, and its domestic and international publication numbers are ISSN 1002-2082 and CN-61-1171/O4. The journal is a technical journal sponsored by the China Ordnance Society and the 205th Institute of China Ordnance Industry. It was included in the "China Science and Technology Core Journal" in April 2006 and in the "Chinese Core Journal" in December 2008. It is included in the journals of important international retrieval institutions such as the American Chemical Abstracts (CA), Cambridge Scientific Abstracts (CSA), Russian Abstracts Journal (AJ), British Scientific Abstracts (INSPEC), Ulrich's Periodical Directory (UIPD), and Polish Index Copernicus (IC). The purpose of the journal is to track the research trends of high-tech at home and abroad, and comprehensively reflect the development status, research level, and application of optoelectronic technology at home and abroad; focus on optoelectronic application technology, advocate scientific research, be close to readers, and be close to enterprises, and focus on reporting new theories, new technologies and new methods, new products, and development trends in the field of optoelectronic technology at home and abroad. This journal solicits research papers on engineering optics, optical information acquisition and processing, optical metrology and detection, low-light-level night vision technology, fiber optic sensing technology, infrared application technology, laser application technology, optoelectronic devices, thin film optics, optical processes and equipment, and displays.
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