Research on Long-Wave Infrared and Laser Common-Aperture Dual-Mode Guided Optical System

Jie Chen; Tuanjie Xia; Tong Yang; Lei Yang; Hongbo Xie

doi:10.3788/AOS221609

Acta Optica Sinica, Volume. 43, Issue 12, 1222001(2023)

Research on Long-Wave Infrared and Laser Common-Aperture Dual-Mode Guided Optical System

Jie Chen¹, Tuanjie Xia², Tong Yang¹, Lei Yang^1、*, and Hongbo Xie¹

¹Key Laboratory of Opto-Electronic Information Technology, Ministry of Education, School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China

²Advanced Photoelectric Detection Research and Development Center, Shanghai Aerospace Control Technology Institute, Shanghai 201100, China

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Figures & Tables(15)

Fig. 1. Schematic diagram of optical structure

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Fig. 2. R-C structure ray trace diagram

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Fig. 3. Geometric representation of optical system OTF with annular obscuration. (a) Annular pupil; (b) two staggered annular exit pupils

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$Diffraction limit of modulation transfer function at different obscuration ratios$

Fig. 4. Diffraction limit of modulation transfer function at different obscuration ratios

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Fig. 5. Long-wave infrared optical initial structure

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Fig. 6. Structure diagram of long-wave infrared optical module. (a) Two-dimensional structure diagram; (b) three-dimensional structure diagram

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Fig. 7. MTF curves for a long-wave infrared optical module

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Fig. 8. Image quality evaluation of long-wave infrared optical module. (a) Distortion diagram; (b) standard spot diagram

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Fig. 9. 1.064 μm laser receiver module structure diagram

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Fig. 10. Image plane analysis of 1.064 μm laser receiver module. (a) Fraction of enclosed energy; (b) footprint diagram

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Fig. 11. MTF curves of long-wave infrared optical modules at different temperatures. (a) -40 ℃; (b) 0 ℃; (c) 20 ℃; (d) 60 ℃

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Fig. 12. Standard spot diagram of long-wave infrared optical module at different temperatures. (a) -40 ℃; (b) 0 ℃; (c) 20 ℃; (d) 60 ℃

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Table 1. Specifications of long-wave infrared optical module and 1.064 μm laser receiving optical module
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Table 1. Specifications of long-wave infrared optical module and 1.064 μm laser receiving optical module
Parameter Long-wave infrared module 1.064 μm laser receiver module
Wavelength 8-12 μm 1.064 μm
Detector Pixel size 12 μm Image diameter 0.5 mm
FOV 4°×3° ±0.3°
Optical total length ≤100 mm —

Table 2. Initial structural parameters of long-wave infrared optical module
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Table 2. Initial structural parameters of long-wave infrared optical module
Parameter $e_{1}^{2}$ $e_{2}^{2}$ $r_{1}$ /mm
$r_{2}$ /
mm
d /mm
Specification 1.214286 14.714286 -66 -39.6 -23.1

Table 3. Tolerance analysis of long-wave infrared system

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Table 3. Tolerance analysis of long-wave infrared system

Classification	Tolerance type	Tolerance value
Surface tolerance	Thickness /mm	±0.02
	Decenter /mm	±0.02
	Tilt /（°）	±0.033
	Radius /fringe	2
Aspherical surface tolerance	PV /μm	0.5
Element tolerance	Decenter /mm	±0.02
Element tolerance	Tilt /（°）	±0.033

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Jie Chen, Tuanjie Xia, Tong Yang, Lei Yang, Hongbo Xie. Research on Long-Wave Infrared and Laser Common-Aperture Dual-Mode Guided Optical System[J]. Acta Optica Sinica, 2023, 43(12): 1222001

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