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Aspheric surface analysis method for simulating human eye crystalline lens based on three-liquid lens structure

A liquid lens and analysis method technology, applied in the field of aspheric analysis, can solve problems such as affecting the imaging effect, and achieve the effect of simple structure

Active Publication Date: 2015-12-02
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in terms of imaging, the spherical surface type has spherical aberration, which seriously affects the imaging effect

Method used

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  • Aspheric surface analysis method for simulating human eye crystalline lens based on three-liquid lens structure
  • Aspheric surface analysis method for simulating human eye crystalline lens based on three-liquid lens structure

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0024] Such as figure 1 Shown is the structure of an aspheric human eye lens, which includes a cylindrical tube, a first conductive liquid arranged in the cylindrical tube, an insulating liquid, a second conductive liquid, a hydrophobic dielectric layer and a conductive layer; wherein the insulating liquid is placed in the first Between the conductive liquid and the second conductive liquid, the hydrophobic dielectric layer is located on the upper surfaces of the first conductive liquid, the insulating liquid and the second conductive liquid, and the conductive layer is located on the hydrophobic dielectric layer; in the first conductive liquid, the second A voltage is applied to the conductive liquid, and the voltage is used to change the contact angles of the first conductive liquid, the second conductive liquid and the insulating liquid.

[002...

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Abstract

The invention discloses an aspheric surface analysis method for simulating a human eye crystalline lens based on a three-liquid lens structure. A three-layer liquid structure of a first conductive liquid + an insulated liquid + a second conductive liquid is employed to simulate a structure of a human eye crystalline lens. a voltage is applied on the first conductive liquid and the second conductive liquid to change the contact angles of the conductive liquids and the insulated liquid, therefore the interface curvature is changed and zooming is achieved. The structure is subjected to the Laplace formula, and a second-order differential equation of an aspheric surface type and a density difference is obtained. The Runge-Kutta algorithm is employed to calculate the second-order differential equation of an aspheric surface type and a density difference, and an aspheric surface type arithmetic solution is obtained. The obtained arithmetic solution is subjected to fitting through the even-order aspheric surface formula, and a fit aspheric surface formula is obtained. According to the fit aspheric surface formula, the structure is subjected to imaging analysis. An adjustable visual model can be provided for achieving simulation of a zooming characteristic of a human eye crystalline lens.

Description

technical field [0001] The invention relates to the technical field of micro-optic imaging, in particular to an aspherical analysis method for simulating human eye lens based on a three-liquid lens structure. Background technique [0002] The lens is one of the important refractive media in the human eye. The diameter of the lens is about 9mm, which is a biconvex lens with high elasticity. Its anterior surface is slightly flatter than its posterior surface, and its anterior surface is approximately 3.6 mm from the anterior apex of the cornea. When there is no adjustment, the front and rear radii of curvature are +10.0mm and -6.0mm respectively (Gullstrand data), and the thickness is about 3.6mm. When the ciliary muscle contracts inward, the lens receives less tension and returns to a relaxed state. At this time, the radius of curvature of the front and rear surfaces of the lens decreases, and close objects form a clear image on the retina. Conversely, when the eye focuse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/00G02B3/14
CPCG02B3/14G02B27/0012
Inventor 孔梅梅朱凌峰宋驰
Owner NANJING UNIV OF POSTS & TELECOMM
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