波前像差测量中的人眼定位误差分析

摘要

Hartmann-Shack principle is introduced, after that, measurement errors resulting from the positioning errors of measured human eye have been analyzed and mathematical expressions about errors of myopia degree are deduced in process of wavefront aberrations measurement. Tolerance of positioning errors has been calculated according to the National Standard of Glasses (GB 10810-1996). This work has its practical means in improving the accuracy of ocular aberration measurement by using Hartmann-Shack wavefront sensor. The results show that measurement errors will be increased depending on the degree of the measured eyes.%在描述Hartmann-Shack波前传感器原理的基础之上,研究了在测量波前像差过程中人眼定位误差所引起的测量误差,给出了光学系统下与人眼视度相关的误差数学表达式,分析了在满足眼镜镜片国家标准(GB 10810-1996)的条件下人眼定位可允许的误差范围,这对于改善和提高Hartmann-Shack测量人眼波前像差的精度具有现实的意义.研究结果表明误差会随着被测眼视度的增加而增加.