高低温试验装置中多光谱光学窗口组件设计

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

西安应用光学研究所，陕西西安 710065

基金项目: 军工双百工艺攻关（多波段共光路光学系统精密装调技术，JCKY2018208B029）

详细信息

作者简介:
惠刚阳（1978—），男，高级工程师，主要从事光电仪器装调工艺研究。E-mail：hgy891@163.com

中图分类号: TN202
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出版历程
- 收稿日期: 2022-05-18
- 修回日期: 2022-07-20
- 网络出版日期: 2022-09-19

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

Xi'an Institute of Applied Optics, Xi'an 710065, China

摘要

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。该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，均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。
- 光学窗口 /
- 除霜除雾 /
- 高低温试验装置 /
- 波像差
Abstract: As an important accessory of the high and low temperature test device of the photoelectric imaging system, the optical window assembly is assembled on the side of the high and low temperature test box. Combined with the comprehensive detector of the photoelectric system outside the box, it is used to detect the performance index of the photoelectric imaging system under high and low temperature conditions. It is an important part of the high and low temperature performance detection device of the photoelectric imaging system. According to the application requirements and material analysis, multispectral ZnS is selected as the optical window material to meet the performance index detection requirements of multispectral photoelectric system; Through the heat conduction theory, the low-temperature service state of the optical window module is analyzed, focusing on the influence of the heating of the window module under the low-temperature condition on the surface shape of the window module, and the structural form to realize the micro stress assembly and the design scheme to solve the frost and fog of the window module under the low-temperature condition are put forward; The finite element calculation results are extracted, processed and combined by sigfit, and the caliber is analyzed by code v φ The wave aberration RMS of 310mm window module in the temperature range is better than that of λ/ 15. They all meet the optical performance requirements of window components and have been verified by the physical prototype. Therefore, the structural design scheme of the multispectral optical window assembly not only meets the requirements of multi band use, but also meets the requirements of low-temperature defrosting and defogging, and ensures the optical performance requirements under high and low temperature conditions.
- Optical window /
- Defrosting and defogging /
- High and low temperature test device for photoelectric system /
- wavefront error

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图 1 光电系统高低温试验装置布局示意图

Fig. 1 Sketch map of high and low temperature test device for photoelectric system

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图 2 光学窗口组件结构简图

Fig. 2 structural diagram of optical window assembly

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图 3 有限元计算结果

Fig. 3 calculation results of ansys

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图 4 视场图－RMS波前误差

Fig. 4 field of view - RMS wavefront error

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图 5 大口径平面干涉仪测试光学窗口组件透射波像差

Fig. 5 Measurement diagram of transmitted wave aberration of optical window assembly

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图 6 光学窗口组件透射波像差测试图

Fig. 6 measurement diagram of transmitted wave aberration of optical window assembly

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表 1 光学窗口组件材料参数表

Table 1 material parameters of optical window assembly

序号	材料	弹性模量/GPa	泊松比	密度/ g/cm³	热膨胀系数 10⁻⁶/K
1	铝	68.2	0.332	2.68	23.6
2	钛	114.0	0.34	4.43	8.8
3	硫化锌	74.5	0.29	4.08	4.6
4	聚四氟乙烯	14.0	0.40	2.20	120.0

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表 2 刚体位移数据表

Table 2 rigid body displacement data

SID	LID	T1/mm	T2/mm	T3/mm	R1/rad	R2/rad	R3/rad
1	1	−1.92E-02	−7.26E-03	1.57E-01	6.20E-05	−1.47E-04	−2.64E-07
1	2	−1.37E-02	−5.18E-03	1.12E-01	4.42E-05	−1.05E-04	−1.87E-07
1	3	−8.21E-03	−3.09E-03	6.72E-02	2.65E-05	−6.30E-05	−1.09E-07
1	4	−2.74E-03	−1.01E-03	2.24E-02	8.75E-06	−2.10E-05	−3.17E-08
1	5	2.74E-03	1.08E-03	−2.24E-02	−8.99E-06	2.10E-05	4.56E-08
1	6	8.21E-03	3.16E-03	−6.72E-02	−2.67E-05	6.30E-05	1.23E-07
1	7	1.37E-02	5.25E-03	−1.12E-01	−4.45E-05	1.05E-04	2.00E-07
2	1	−2.11E-02	−8.09E-03	1.52E-01	6.43E-05	−1.53E-04	−2.49E-07
2	2	−1.51E-02	−5.77E-03	1.08E-01	4.59E-05	−1.09E-04	−1.76E-07
2	3	−9.05E-03	−3.45E-03	6.50E-02	2.75E-05	−6.55E-05	−1.03E-07
2	4	−3.02E-03	−1.13E-03	2.17E-02	9.08E-06	−2.18E-05	−2.96E-08
2	5	3.02E-03	1.20E-03	−2.17E-02	−9.33E-06	2.18E-05	4.35E-08
2	6	9.05E-03	3.52E-03	−6.50E-02	−2.77E-05	6.55E-05	1.17E-07
2	7	1.51E-02	5.84E-03	−1.08E-01	−4.61E-05	1.09E-04	1.90E-07
3	1	2.18E-02	−2.79E-02	−2.72E-01	−3.49E-04	−3.81E-04	−5.35E-06
3	2	1.56E-02	−1.99E-02	−1.94E-01	−2.50E-04	−2.72E-04	−3.82E-06
3	3	9.36E-03	−1.19E-02	−1.17E-01	−1.50E-04	−1.63E-04	−2.29E-06
3	4	3.12E-03	−3.95E-03	−3.89E-02	−4.99E-05	−5.44E-05	−7.56E-07
3	5	−3.12E-03	4.03E-03	3.89E-02	4.99E-05	5.44E-05	7.73E-07
3	6	−9.36E-03	1.20E-02	1.17E-01	1.50E-04	1.63E-04	2.30E-06
3	7	−1.56E-02	2.00E-02	1.94E-01	2.49E-04	2.72E-04	3.83E-06
4	1	1.77E-02	−2.42E-02	−2.71E-01	−3.40E-04	−3.72E-04	−5.46E-06
4	2	1.26E-02	−1.73E-02	−1.93E-01	−2.43E-04	−2.65E-04	−3.90E-06
4	3	7.58E-03	−1.04E-02	−1.16E-01	−1.46E-04	−1.59E-04	−2.34E-06
4	4	2.53E-03	−3.43E-03	−3.87E-02	−4.86E-05	−5.31E-05	−7.73E-07
4	5	−2.53E-03	3.51E-03	3.87E-02	4.86E-05	5.31E-05	7.90E-07
4	6	−7.58E-03	1.04E-02	1.16E-01	1.46E-04	1.59E-04	2.35E-06
4	7	−1.26E-02	1.74E-02	1.93E-01	2.43E-04	2.65E-04	3.92E-06

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表 3 面型变化数据表

Table 3 optical surface deformation data mm

SID	LID	dRoC	RMS	P-V	Max	Min
1	1	1.69E+05	2.09E-02	8.66E-02	5.03E-02	−3.64E-02
1	2	2.37E+05	1.49E-02	6.19E-02	3.59E-02	−2.60E-02
1	3	3.95E+05	8.96E-03	3.71E-02	2.15E-02	−1.56E-02
1	4	1.19E+06	2.99E-03	1.24E-02	7.17E-03	−5.19E-03
1	5	−1.19E+06	2.99E-03	1.24E-02	5.20E-03	−7.19E-03
1	6	−3.95E+05	8.96E-03	3.71E-02	1.56E-02	−2.15E-02
1	7	−2.37E+05	1.49E-02	6.19E-02	2.60E-02	−3.59E-02
2	1	1.68E+05	2.11E-02	8.84E-02	5.20E-02	−3.64E-02
2	2	2.35E+05	1.51E-02	6.31E-02	3.71E-02	−2.60E-02
2	3	3.92E+05	9.04E-03	3.79E-02	2.23E-02	−1.56E-02
2	4	1.18E+06	3.01E-03	1.26E-02	7.42E-03	−5.20E-03
2	5	−1.18E+06	3.01E-03	1.26E-02	5.20E-03	−7.43E-03
2	6	−3.92E+05	9.04E-03	3.79E-02	1.56E-02	−2.23E-02
2	7	−2.35E+05	1.51E-02	6.32E-02	2.60E-02	−3.72E-02
3	1	−1.44E+06	2.20E-02	1.12E-01	6.41E-02	−4.81E-02
3	2	−2.01E+06	1.57E-02	8.01E-02	4.58E-02	−3.44E-02
3	3	−3.35E+06	9.43E-03	4.81E-02	2.75E-02	−2.06E-02
3	4	−1.01E+07	3.14E-03	1.60E-02	9.15E-03	−6.87E-03
3	5	1.00E+07	3.14E-03	1.60E-02	6.87E-03	−9.15E-03
3	6	3.35E+06	9.43E-03	4.81E-02	2.06E-02	−2.75E-02
3	7	2.01E+06	1.57E-02	8.01E-02	3.44E-02	−4.58E-02
4	1	−1.47E+06	2.22E-02	1.15E-01	6.92E-02	−4.60E-02
4	2	−2.06E+06	1.58E-02	8.23E-02	4.94E-02	−3.29E-02
4	3	−3.43E+06	9.50E-03	4.94E-02	2.96E-02	−1.97E-02
4	4	−1.03E+07	3.17E-03	1.65E-02	9.88E-03	−6.58E-03
4	5	1.03E+07	3.17E-03	1.65E-02	6.58E-03	−9.88E-03
4	6	3.43E+06	9.50E-03	4.94E-02	1.97E-02	−2.96E-02
4	7	2.06E+06	1.58E-02	8.23E-02	3.29E-02	−4.94E-02

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表 4 RMS波前误差(λ＝632.8 nm)

Table 4 RMS wavefront error (λ＝ 632.8 nm)

温度/℃	RMS波前最小值/λ	RMS波前最大值/λ	RMS波前平均值/λ
−50	0.037 890	0.037 890	0.0378 90
−30	0.036 957	0.036 958	0.036 957
−10	0.020 315	0.020 315	0.020 315
10	0.006 990	0.006 990	0.006 990
30	0.007 769	0.007 769	0.007 769
50	0.020 433	0.020 433	0.020 433
70	0.037 285	0.037 285	0.037 285

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表 5 光学窗口组件透射波像差测试结果

Table 5 test results of transmitted wave aberration of optical window assembly

参数	1	2	3
PV/λ	0.210	0.169	0.187
RMS/λ	0.042	0.033	0.035

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表 6 光学窗口组件实际工作状态透射波像差测试结果

Table 6 data table of transmitted wave aberration test results of optical window assembly in actual working state

参数	1	2	3
PV（λ）	0.220	0.212	0.233
RMS（λ）	0.056	0.062	0.065

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