Paraxial Optical Imaging Analysis of Corneal Adaptation of Direct Contact Device

Yue Wei; Yang Xiubin; Xu Tingting; Han Jinliang; Wang Shaoen

doi:10.3788/CJL202047.1207005

Chinese Journal of Lasers, Volume. 47, Issue 12, 1207005(2020)

Paraxial Optical Imaging Analysis of Corneal Adaptation of Direct Contact Device

Yue Wei^1,2,3, Yang Xiubin^1,3、*, Xu Tingting^1,2,3, Han Jinliang^1,2,3, and Wang Shaoen^1,2,3

Author Affiliations

¹Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China

²University of Chinese Academy of Sciences, Beijing 100039, China

³Key Laboratory of Space-Based Dynamic & Rapid Optical Imaging Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China

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Figures & Tables(13)

Fig. 1. Eye optical structure

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Fig. 2. Imaging calculation model of corneal wearing corneal contact lens. (a) Schematic diagram of object image position; (b) ray tracing process

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$Virtual images of corneal contact lenses with different refractive indexes. (a) Overall image distribution; (b) local enlarged view of corneal contact lens, cornea, and virtual image; (c) magnified view of virtual images with different refractive indexes$

Fig. 3. Virtual images of corneal contact lenses with different refractive indexes. (a) Overall image distribution; (b) local enlarged view of corneal contact lens, cornea, and virtual image; (c) magnified view of virtual images with different refractive indexes

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Fig. 4. 2D diagram of optical system

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Fig. 5. MTF curve image

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Fig. 6. Seidel aberration diagram of optical imaging system

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Fig. 7. Two-dimensional diagram of optical system with contact lens

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Fig. 8. Comparison of MTF curves. (a) 0.04 mm (PMMA); (b) 0.05 mm (PMMA); (c) 0.06 mm (PMMA); (d) 0.04 mm (APL5014CL); (e) 0.05 mm (APL5014CL); (f) 0.06 mm (APL5014CL)

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Fig. 9. Comparison of distortion and field curvature. (a) 0.04 mm (PMMA); (b) 0.05 mm (PMMA); (c) 0.06 mm (PMMA); (d) 0.04 mm (APL5014CL); (e) 0.05 mm (APL5014CL); (f) 0.06 mm (APL5014CL)

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Table 1. Parameters of ideal optical imaging
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Table 1. Parameters of ideal optical imaging
Parameter Value
Total length /mm 105
Focal length /mm 20
Diameter of entrance pupil /mm 8
Cut-off frequency /(lp·mm^-1) 67
Image height /mm 3

Table 2. Parameters of initial structure of optical system
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Table 2. Parameters of initial structure of optical system
Structure Radius /mm Thickness /mm Class
Primary mirror 18.885 2.042 LAKN12
Secondary mirror 10.394 2.563 LAKN12
Tertiary mirror 12.574 0.728 BASF5
Quartus mirror 6.302 1.421 SSK4A
Eventual mirror -10.299 0.525 KZFS1

Table 3. Optical properties of common optical materials
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Table 3. Optical properties of common optical materials
Material Nd Vd Luminousness /% Birefringence
PMMA 1.4917 57.2 92 <20
PC 1.5854 29.9 88 <65
APL5014CL 1.5445 56.0 90 <20
ARTON-D4531F 1.5146 56.9 92 <40
ZEONEX480 1.5247 55.8 92 <25

Table 4. Parameters of corneal contact lens
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Table 4. Parameters of corneal contact lens
Structure Radius /mm Thickness /mm Glass
Anterior cornea -6.52 0.55
Posterior contact lens -7.76 0.04,0.05,0.06 PMMA/APL5014CL
Anterior contact lens -8.13 9.16 PMMA/APL5014CL

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Yue Wei, Yang Xiubin, Xu Tingting, Han Jinliang, Wang Shaoen. Paraxial Optical Imaging Analysis of Corneal Adaptation of Direct Contact Device[J]. Chinese Journal of Lasers, 2020, 47(12): 1207005

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