泽尼克多项式
波前
光学设计
光学
剪切干涉仪
自适应光学
光学像差
物理
剪切(物理)
变形镜
干扰(通信)
干涉测量
点扩散函数
球差
波前传感器
光线追踪(物理)
计算机科学
天文干涉仪
镜头(地质)
电信
频道(广播)
热力学
程序设计语言
软件
作者
Yanping Chen,Shaojun Zeng,Mengting Xu
摘要
A new method is proposed to measure the wavefront aberration of human eyes based on annular radial shearing interference technology in this paper. The feasibility and accuracy of the scheme are verified by implementing simulations of four typical model eyes on ZEMAX. The proposed scheme consists of an illumination light path and an annular radial shearing interference system. The light path focuses the laser with a diameter of about 1 millimeter on the macula of the simulated human eye to form a point. Afterwards, the reflected light passes through the simulated eye refraction system to be incident in the annular radial shearing interference system in the form of wavefront aberration. Then the interference system contracts and expands the beam that carries wavefront aberration of the simulated eye to generate interference within their common area to obtain annular radial shearing interference patterns. Zernike polynomials are used as the basis functions to calculate the Zernike coefficients of the phase difference wavefront after image processing. Accordingly, the trial wavefront is reconstructed by iterative method, and is compared with that of corresponding model eye constructed by ZEMAX to calculate the error and validate the exactness eventually.
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