Infrared and Laser Engineering, Volume. 49, Issue 9, 20200031(2020)
Design and realization of light and small long-wave infrared optical system
Figures & Tables(14)
Fig. 2. Simplified schematic diagram of the Newton folding main system
Table 1.
Parameters of optical system
光学系统参数
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Parameters of optical system
光学系统参数
Parameter Value Wavelength /μm 8-12.5 Focal length /mm 300 F number2 IFOV/mrad 0.1 Observation range/(°) Azimuth:0-360, Pitch: 0-90 Detection distance/km 100 Field of view/(°) 2.34（1.83×1.47） Distortion Less than 3%
Table 2.
Lens data of system design
系统设计数据
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Lens data of system design
系统设计数据
Radius /mm Thickness/mm Glass M1 –309.2 –111.2 Mirror M2 Infinity 46.1 Mirror L1 –14.7 6.0 Germanium –17.1 9.7 L2 –99.6 6.0 ZnSe –250.9 2.92 L3 27.7 5.9 Germanium 23.5 2.1 L4 37.9 7.0 Germanium –368.1 6.6 Window Infinity 1.0 Germanium Infinity 2.7 Filter Infinity 0.3 Germanium Infinity 19.8
Table 3.
The most sensitive tolerance
敏感公差项
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The most sensitive tolerance
敏感公差项
Parameter Value Decrease of MTF TSDX3_rear 0.015 mm 0.065 TSDX3_front 0.015 mm 0.065 TSDY3_rear 0.015 mm 0.064 TSDY3_front 0.015 mm 0.063
Table 4.
Result of MTF measurement
MTF测试结果
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Result of MTF measurement
MTF测试结果
Field of view MTF A ,B, C A -0.245，B -0.262，C -0.243D ,E ,F D -0.259，E -0.267，F -0.248G ,H ,I G -0.251，H -0.263，I -0.244
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Siyuan Hao, Jianan Xie, Maoxing Wen, Yueming Wang, Liyin Yuan. Design and realization of light and small long-wave infrared optical system[J]. Infrared and Laser Engineering, 2020, 49(9): 20200031
Paper Information
Category: Optical design
Received: Jan. 17, 2020
Accepted: --
Published Online: Jan. 4, 2021
The Author Email: Yuan Liyin (yuanliyin@mail.sitp.ac.cn)
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