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The measurement of refractive index profile and aberration of radial gradient index lens by using imaging method
Authors:Xiaohong Sun  Hui Ma  Hai Ming  Zhiqiang Zheng  Jiwen Yang  Jianping Xie
Institution:Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, PR China
Abstract:In this article, through the linear fit of objective distance and reciprocal of magnification in different imaging locations, we use imaging method to measure the central refractive index n(0) and focusing constant α of radial gradient index (GRIN) lens and obtain 10−3 measurement accuracy of n(0). At the same time, under distortion, the fourth-order refractive index coefficient and aberration of GRIN lens are derived.
Keywords:GRIN  Imaging  Aberration  Refractive index  Polymer
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