Chinese Journal of Lasers, Volume. 50, Issue 21, 2107204(2023)
Design and Study of Liquid Lens Zoom Optical System for Laparoscopy
Figures & Tables(12)
Fig. 3. Structure diagram of mechanical zoom system. (a) Effective focal length (EFL) 5 mm; (b) EFL 7.2 mm; (c) EFL 10.4 mm; (d) EFL 15 mm
Fig. 4. COMSOL simulation results under different voltages. (a) U=0 V; (b) U=35 V; (c) U=60 V
Fig. 7. Structure of liquid lens zoom system. (a) EFL 5 mm; (b) EFL 7.2 mm; (c) EFL 10.4 mm; (d) EFL 15 mm
Fig. 8. MTF curves for different focal lengths. (a) EFL 5 mm; (b) EFL 7.2 mm; (c) EFL 10.4 mm; (d) EFL 15 mm
Fig. 9. Field curvature/distortion for different focal lengths. (a) EFL 5 mm; (b) EFL 7.2 mm; (c) EFL 10.4 mm; (d) EFL 15 mm
Table 1. Index requirements of laparoscopic zoom optical system
View tableTable 1. Index requirements of laparoscopic zoom optical system
Parameter Value Wavelength coverage /nm 486‒656 Zoom part system caliber /mm ≤6.2 System outside diameter /mm ≤10 Overall length /mm ≤45 Focal length /mm 5‒15 Field angle range /（°） 24‒64 MTF /（lp·mm-1） ≥0.3 Optical distortion /% <15
Table 2. Structure parameters
View tableTable 2. Structure parameters
Surface Radius /mm Thickness /mm Material 1 Infinity 10.000 2 -45.898 0.980 H-ZBAF16 3 7.027 2.069 4 -13.737 2.410 D-LAK52 5 -8.091 0.086 6 48.217 1.835 H-ZLAF50E 7 -10.645 0.600 8 -9.675 0.500 H-ZF73 9 Infinity 1.000 Sodium chloride solution 10 Short EFL（5 mm）-5.726，middle EFL（7.2 mm）-15.576，middle EFL（10.4 mm）57.832，long EFL（15 mm）12.410 1.000 Silicone oil 11 Infinity 0.500 H-ZK14 12 Infinity 3.496 13 -9.589 1.201 H-K3 14 -6.563 0.991 H-ZK10 15 -6.972 7.935 16 Infinity 0.299 17 4.162 1.530 ZF7L 18 -6.879 0.983 H-ZLAF4LB 19 4.658 2.106 20 7.539 1.850 H-LAK52 21 -2.897 0.953 H-ZF73 22 -13.700 0.295 23 -14.580 0.500 H-BAK7A 24 Infinity 1.000 Sodium chloride solution 25 Short EFL（5 mm）6.583，middle EFL（7.2 mm）11.978，middle EFL（10.4 mm）-202.228，long EFL（15 mm）-7.458 1.000 Silicone oil 26 Infinity 0.500 D-ZLAF52LA-25 27 Infinity 5.550 28 -2.969 1.278 D-LAK70 29 -3.577 0.086 30 11.031 1.512 F2 31 -47.507 0.981
Table 3. System parameters
View tableTable 3. System parameters
Focal length /mm 5 7.2 10.4 15 Field angle /（°） 22.320 32.276 45.240 61.928 F# 5.0 5.5 6.0 6.5 Maximum RMS radius /μm 4.596 3.611 4.686 6.694 Total length /mm 45 45 45 45
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Jian Dong, Chunyan Wang, Hao Sun, Huan Liu, Yunjie Teng. Design and Study of Liquid Lens Zoom Optical System for Laparoscopy[J]. Chinese Journal of Lasers, 2023, 50(21): 2107204
Paper Information
Category: Optical Diagnostics and Therapy
Received: Jul. 12, 2023
Accepted: Aug. 18, 2023
Published Online: Nov. 1, 2023
The Author Email: Chunyan Wang (245044961@qq.com)
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