惠刚阳, 张博, 左晓舟, 王中强, 刘欣, 赵红军. 高低温试验装置中多光谱光学窗口组件设计[J]. 应用光学, 2023, 44(3): 661-667, 683. DOI: 10.5768/JAO202344.0305001
引用本文: 惠刚阳, 张博, 左晓舟, 王中强, 刘欣, 赵红军. 高低温试验装置中多光谱光学窗口组件设计[J]. 应用光学, 2023, 44(3): 661-667, 683. DOI: 10.5768/JAO202344.0305001
XI Gangyang, ZHANG Bo, ZUO Xiaozhou, WANG Zhongqiang, LIU Xin, ZHAO Hongjun. Design of multispectral optical window assembly for high and low temperature test device[J]. Journal of Applied Optics, 2023, 44(3): 661-667, 683. DOI: 10.5768/JAO202344.0305001
Citation: XI Gangyang, ZHANG Bo, ZUO Xiaozhou, WANG Zhongqiang, LIU Xin, ZHAO Hongjun. Design of multispectral optical window assembly for high and low temperature test device[J]. Journal of Applied Optics, 2023, 44(3): 661-667, 683. DOI: 10.5768/JAO202344.0305001

高低温试验装置中多光谱光学窗口组件设计

Design of multispectral optical window assembly for high and low temperature test device

  • 摘要: 箱外光电系统综合检测仪是光电成像系统高低温性能检测装置的重要组成部分,多光谱光学窗口是高低温箱和外置目标模拟器的接口。论文根据应用需求及材料分析结果,选取多光谱ZnS作为光学窗口材料,通过热传导理论对光学窗口组件低温使用状态进行分析,重点分析窗口组件在低温条件下加热对窗口组件面型的影响,并提出了实现微应力装配的结构形式及解决窗口组件在低温条件下结霜结雾的设计方案;通过sigfit对有限元计算结果进行提取、处理以及数据拟合,并通过CODE V分析口径为Φ310 mm窗口组件在使用温度范围内的波像差RMS,分析结果显示优于λ/15,满足窗口组件的光学性能要求,最后通过实物样机进行了验证。实验结果表明:该多光谱光学窗口组件的结构设计方案既满足多波段使用要求,又满足低温除霜除雾要求,同时保证了高低温条件下的光学性能要求。

     

    Abstract: The comprehensive detector of the photoelectric system outside the box is an important accessory of the high and low temperature performance test device of the photoelectric imaging system, and the multispectral optical window is an interface between the high and low temperature box and the external target simulator. According to the application requirements and material analysis results, the multispectral ZnS was selected as the optical window material. Through the heat conduction theory, the low-temperature service state of the optical window assembly was analyzed, focusing on the influence of the window assembly heating under the low-temperature condition on the surface shape of the window assembly, and the structural form to realize the micro-stress assembly and the design scheme to solve the frost and fog of the window assembly under the low-temperature condition were put forward. According to the extraction, processing and data fitting of finite element calculation results by sigfit and the analysis of caliber by CODE V, the root-mean-square (RMS) value of wave aberration of Φ 310 mm window assembly in the temperature range is better than λ/15. The above contents all meet the optical performance requirements of window assembly. And finally, it was verified through the physical prototype. The experimental results show that the structural design scheme of multispectral optical window assembly not only meets the requirements of multi band usage, but also meets the requirements of low-temperature defrosting and defogging, and ensures the optical performance requirements under high and low temperature conditions.

     

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