Optical-Digital Joint Design of a Dual-Waveband Infrared Refractive-Diffractive System

Yang Hu; Qingfeng Cui; Lin Sun; Bo Zhang; Mingxu Piao

doi:10.3788/AOS202040.1422002

Acta Optica Sinica, Volume. 40, Issue 14, 1422002(2020)

Optical-Digital Joint Design of a Dual-Waveband Infrared Refractive-Diffractive System

Yang Hu, Qingfeng Cui^*, Lin Sun, Bo Zhang, and Mingxu Piao

Author Affiliations

School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun, Jilin 130022, China

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Abstract Get PDF(in Chinese)

Figures & Tables(11)

Fig. 1. Model analysis principle

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$Diffraction efficiency. (a) When the center wavelength is in long waveband; (b) when the center wavelength is in medium waveband$

Fig. 2. Diffraction efficiency. (a) When the center wavelength is in long waveband; (b) when the center wavelength is in medium waveband

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Fig. 3. MTF graphs of traditional design method. (a) MTF of medium wave infrared; (b) MTF of long wave infrared

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Fig. 4. Spot diagram obtained by traditional design method

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Fig. 5. Optical system layout of proposed design method

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Fig. 6. MTF graphs of proposed design method. (a) MTF of medium wave infrared; (b) MTF of long wave infrared

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Fig. 7. Spot diagram of proposed design method

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Fig. 8. Reconstruction results. (a) Unprocessed image; (b) reconstructed image

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Table 1. Design specifications of designed system
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Table 1. Design specifications of designed system
Parameter Value
Wavelength /μm 3.7--4.8 and 7.7--10
Field of view /(°) 14.4
Effective focal length /mm 50
F number 2

Table 2. Blurred spot root-mean-square radius and variance obtained by two optimization methods

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Table 2. Blurred spot root-mean-square radius and variance obtained by two optimization methods

Field of view /(°)	Root-mean-square radius /μm
	Wavelength of 7.7 μm		Wavelength of 8.5 μm		Wavelength of 10.0 μm
	Traditional	Proposed	Traditional	Proposed	Traditional	Proposed
0	108.59	98.81	121.51	107.76	148.52	125.64
3.6	109.91	98.11	122.76	106.89	149.58	124.36
5.1	111.18	97.90	123.99	106.51	150.72	123.59
7.2	112.96	98.81	125.81	107.09	152.59	123.42
Variance	3.47	0.22	3.36	0.27	3.03	1.02

Table 3. Objective assessment function value
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Table 3. Objective assessment function value
Image GMG LS BIQI
Blurred image 1.7367 6.5322 64.2197
Restored image 3.2802 14.5878 55.4468

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Yang Hu, Qingfeng Cui, Lin Sun, Bo Zhang, Mingxu Piao. Optical-Digital Joint Design of a Dual-Waveband Infrared Refractive-Diffractive System[J]. Acta Optica Sinica, 2020, 40(14): 1422002

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