[논문]Optical Model of a Human Eye's Crystalline Lens Based on a Three-layer Liquid Lens

Kong, Meimei; Chen, Xin; Yuan, Yang; Zhao, Rui; Chen, Tao; Liang, Zhongcheng

doi:10.3807/copp.2019.3.2.177

Optical Model of a Human Eye's Crystalline Lens Based on a Three-layer Liquid Lens 원문보기

Current optics and photonics, v.3 no.2, 2019년, pp.177 - 180

Kong, Meimei (School of Electronic and Optical Engineering & School of Microelectronics, Nanjing University of Posts and Telecommunications) , Chen, Xin (School of Electronic and Optical Engineering & School of Microelectronics, Nanjing University of Posts and Telecommunications) , Yuan, Yang (School of Electronic and Optical Engineering & School of Microelectronics, Nanjing University of Posts and Telecommunications) , Zhao, Rui (School of Electronic and Optical Engineering & School of Microelectronics, Nanjing University of Posts and Telecommunications) , Chen, Tao (School of Electronic and Optical Engineering & School of Microelectronics, Nanjing University of Posts and Telecommunications) , Liang, Zhongcheng (School of Electronic and Optical Engineering & School of Microelectronics, Nanjing University of Posts and Telecommunications)

Abstract ▼ AI-Helper

Based on liquid-lens technology and our previous findings on the optical model of the Chinese eye, the liquid lens is applied in the research of the crystalline-lens optical model. Theoretical models of three-layer liquid lenses are built with COMSOL software, and the effect of voltage on the shape of the interface between two liquids is analyzed. By polynomial fitting, different equations describing the interface shape are set up under different voltages. Finally, the optical system of the human eye with a three-layer liquid lens is built and analyzed with Zemax optical design software, and moreover the optical system models of emmetropia, myopia, and hyperopia are presented. This method to build a model of the human eye with a variable-focus liquid lens can provide a novel idea for more practical human-eye models for clinical regulation and control in the future.

주제어

표/그림 (7)

그림 FIG. 1. Schematic cross section of the three-layer liquid-lens model for the crystalline lens’s accommodation.
그림 FIG. 2. Simulation diagrams of the three-layer liquid-lens model at different applied voltages: (a) U₁ = U₂ = 30 V, (b) U₁ = U₂ = 80 V, (c) U₁ = U₂ = 110 V.
표 TABLE 1. Aspheric coefficients αi of S1 with U₁ = 80 V and different applied voltage U₂
표 TABLE 2. Aspheric coefficients αi of S2 with U1 = 80 V and different applied voltage U2
그림 FIG. 3. Schematic plots of three-layer liquid lenses with (a) U₁ = 80 V & U₂ = 0 V, (b) U₁ = 80 V & U₂ = 30 V, (c) U₁ = 80 V & U₂ = 70 V, and (d) U₁ = 80 V & U₂ = 110 V.
그림 FIG. 4. Schematic plots of the eye model with a liquid lens for a pupil diameter of 3 mm, under applied-voltage combinations of (a) U₁ = 96 V & U₂ = 98 V, (b) U₁ = 96 V & U₂ = 114 V, and (c) U₁ = 60 V & U₂ = 100 V.
그림 FIG. 5. The MTF of the eye model with the three-layer liquid lens (U₁ = 96 V & U₂ = 98 V), compared to theoretical eye models and experimental results.

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제안 방법

Based on the optical properties of the crystalline lens and liquid-lens technology, a three-layer liquid-lens model that characterizes lens zoom is proposed in this work. Combined with our previous work on modeling the Chinese human eye [11, 12], the optical system of the human eye with a three-layer liquid lens is presented.

이론/모형

The theoretical eye models are the Chinese generic eye model and the wide-angle eye model proposed by I. Escudero-Sanz & R. Navarro [15].

참고문헌 (16)

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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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원문보기 상세보기
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상세보기
I. Escudero-Sanz and R. Navarro, "Off-axis aberrations of a wide-angle schematic eye model", J. Opt. Soc. Am. A 16, 1881-1891 (1999).

상세보기
P. Artal and R. Navarro, "Monochromatic modulation transfer function of the human eye for different pupil diameters: an analytical expression," J. Opt. Soc. Am. A 11, 246-249 (1994).

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