Design of Cooled Dual-Group Linked Continuous Zoom Hybrid Refractive-Diffractive System Based on Double-Layer Diffractive Element

Chengshuang Ma; Ying Li; Changxi Xue

doi:10.3788/AOS241831

Acta Optica Sinica, Volume. 45, Issue 9, 0922001(2025)

Design of Cooled Dual-Group Linked Continuous Zoom Hybrid Refractive-Diffractive System Based on Double-Layer Diffractive Element

Chengshuang Ma^1,2,3, Ying Li^2,3、**, and Changxi Xue^1,3、*

Author Affiliations

¹Key Laboratory of Advanced Optical System Design and Manufacturing Technology of Jilin Province, Changchun University of Science and Technology, Changchun 130022, Jilin , China

²Department of Instrument Science and Technology, Changchun University of Science and Technology, Changchun 130022, Jilin , China

³School of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130022, Jilin , China

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Figures & Tables(14)

Fig. 1. Detailed diagram of light passing through the double-layer DOE

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Fig. 2. Relationship between design wavelength and the height of the double-layer DOE microstructure. (a) H₁; (b) H₂

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Fig. 3. Relationship between design wavelength and PIDE

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Fig. 4. Schematic diagram of dual-group linked zoom system

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Fig. 5. Structure diagrams of dual-band infrared zoom optical system. (a) f=300 mm; (b) f=100 mm; (c) f=30 mm

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Fig. 6. MTF curves. (a) Long wave 300 mm; (b) middle wave 300 mm; (c) long wave 30 mm; (d) middle wave 30 mm

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Fig. 7. Distortion graphic. (a) Long wave 300 mm; (b) middle wave 300 mm; (c) long wave 30 mm; (d) middle wave 30 mm

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Fig. 8. Comparison of spot sizes before and after the introduction of the double-layer DOE. (a) Long wave 300 mm; (b) middle wave 300 mm; (c) long wave 30 mm; (d) middle wave 30 mm

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Fig. 9. Probability diagram of Monte Carlo analysis

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Fig. 10. Schematic diagram of microstructure height error

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Fig. 11. Relationship between microstructure height error coefficient and PIDE

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Table 1. Design parameter of optical system
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Table 1. Design parameter of optical system
Parameter Value
Working waveband /μm 3.7‒4.8&8‒10
Detector type 640×512
Pixel size /μm 15
F number 3
Focal length /mm 30‒300

Table 2. Distance between some components at different focal lengths
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Table 2. Distance between some components at different focal lengths
f /mm d₁₂ /mm d₂₃ /mm d₃₄ /mm d₄₅ /mm
300 82.50 1.50 148.40 1.00
200 79.11 50.73 98.01 5.34
100 74.01 79.06 67.77 12.79
30 38.30 148.40 1.50 44.30

Table 3. Tolerance distribution table of the zoom optical system

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Table 3. Tolerance distribution table of the zoom optical system

Tolerance item	Value
Radius /mm	±0.03
Thickness /mm	±0.03
Surface decenter /mm	±0.03
Surface irregularity （number of fringes）	≤0.2
Element decenter /mm	±0.03
Element tilt /rad	±0.03
Refractive index	±0.001
Abbe number /%	±1

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Chengshuang Ma, Ying Li, Changxi Xue. Design of Cooled Dual-Group Linked Continuous Zoom Hybrid Refractive-Diffractive System Based on Double-Layer Diffractive Element[J]. Acta Optica Sinica, 2025, 45(9): 0922001

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