All-Optical Framing Imaging Technology Based on Diffractive Optical Elements

Yanjin Li; Lang Zhou; Zhuo Li; Rui Shi; Xin Wang; Suhui Yang

doi:10.3788/AOS202141.0232001

Acta Optica Sinica, Volume. 41, Issue 2, 0232001(2021)

All-Optical Framing Imaging Technology Based on Diffractive Optical Elements

Yanjin Li¹, Lang Zhou¹, Zhuo Li¹, Rui Shi¹, Xin Wang¹, and Suhui Yang^1,2、*

Author Affiliations

¹School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China

²Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, Beijing 100081, China

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Figures & Tables(11)

Fig. 1. Schematic diagram of framing filtering. (a) Framing angle of DOE; (b) frame interval; (c) BPF filtering

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Fig. 2. Schematic diagram of optical path of framing imaging system

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Fig. 3. Model of framing imaging system

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Fig. 4. Narrow band spectra and imaging array diagrams at different θ. (a) θ=20°; (b) θ=25°; (c) θ=30°; (d) θ=35°; (e) θ=40°

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Fig. 5. Relationship between minimum center wavelength, maximum center wavelength, frame interval and dip angles of BPF

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Fig. 6. Test chart of radiation uniformity. (a) Inter-frame uniformity; (b) intra-frame uniformity

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$MTF curves of sub-images at different diffraction orders in framing imaging system$

Fig. 7. MTF curves of sub-images at different diffraction orders in framing imaging system

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Table 1. Narrowband spectrum parameter when BPF angle is 30°

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Table 1. Narrowband spectrum parameter when BPF angle is 30°

No.	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
θ /(°)	23.17	24.87	26.14	26.75	27.70	28.76	29.32	29.41	30.73	31.28	32.32	32.60	33.92	34.05	35.40	37.08
λ_t /nm	810.8	807.9	805.6	804.4	802.6	800.4	799.3	799.1	796.2	795.0	792.6	792.0	788.8	788.5	785.2	780.8
λ_r /nm	810.5	807.4	805.2	804.0	802.2	800.1	799.0	798.8	796.0	794.8	792.7	792.1	789.1	788.7	785.7	782.1

Table 2. Average of gray
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Table 2. Average of gray
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
$\bar{V}$ 211.1 219.1 214.7 162.7 216.4 224.2 226.2 205.1 218.1 226.3 227.0 221.4 207.6 225.8 225.6 204.4

Table 3. Non-uniformity of single imageunit: %
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Table 3. Non-uniformity of single imageunit: %
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
N 1.25 1.30 3.54 9.90 1.50 1.53 2.07 6.19 2.25 1.56 1.64 2.27 3.05 1.41 1.10 4.72

Table 4. MTF of sub-images at different diffraction orders
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Table 4. MTF of sub-images at different diffraction orders
Diffraction order MTF at a specific frequency Frequency at a specific MTF/(lp·mm^-1)
35 lp/mm Nyquist 0.95 0.90 0.85 0.80
( 1,-1) 0.999 0.745 84 109 143 164
(-1,-1) 1 0.740 84 101 134 163
(-3,-1) 0.991 0.796 89 121 163 184

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Yanjin Li, Lang Zhou, Zhuo Li, Rui Shi, Xin Wang, Suhui Yang. All-Optical Framing Imaging Technology Based on Diffractive Optical Elements[J]. Acta Optica Sinica, 2021, 41(2): 0232001

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