大视场空间相机的无热化光机结构设计OA
Athermal opto-mechanical structure design for large field-of-view space camera
为解决现有空间相机视场角小、温度变化影响成像质量的问题,采用光学被动式无热化设计方法,结合ZEMAX软件优化与有限元分析,设计视场为20°×20°、光谱范围为450～850 nm、焦距大于等于170 mm的光学系统,选用钛合金镜筒并采用三角形减重槽实现结构轻量化.结果表明:系统在奈奎斯特截止频率为50 lp/mm、温度为10～30℃时调制传递函数(MTF)值大于0.71,点列图均方根(RMS)小于等于9.959 μm,结构重量降至9.114 kg(减重率23.4%),满足衍射极限成像要求.
To address the issues of small field of view and imaging quality degradation caused by temperature variations in ex-isting space cameras,a passive optical athermalization design method is adopted.Combined with ZEMAX software optimiza-tion and finite element analysis,an optical system with a 20°×20° field of view,a spectral range of 450～850 nm,and a focal length of no less than 170 mm is designed.A titanium alloy lens barrel is selected,and triangular weight-reduction grooves are employed to achieve structural lightweight design.The results show that when the system has a Nyquist cutoff frequency of 50 lp/mm and a temperature of 10～30 ℃,the modulation transfer function(MTF)value is greater than 0.71,the root mean square(RMS)of the spot diagram is no more than 9.959 μm,and the structural weight is reduced to 9.114 kg(weight reduction rate of 23.4％),meeting the requirements for diffraction-limited imaging.
王海鹏;白素平;于信;周子文;沈宝亮
长春理工大学 光电工程学院,长春 130022长春理工大学 光电工程学院,长春 130022长春理工大学 光电工程学院,长春 130022吉林省产品质量监督检验院,长春 130103中国人民解放军61769部队
信息技术与安全科学
大视场空间相机光机设计无热化轻量化
large field-of-view space cameraopto-mechanical designathermalizationlightweight
《光通信技术》 2026 (2)
67-71,5
国家自然科学基金青年基金项目(62205032)资助长春理工大学青年基金项目(XQNJJ-2019-01)资助吉林省科技发展计划项目(20220201097GX)资助.
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