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首页> 外文会议>Optical system alignment, tolerancing, and verification VIII >Study on decentration induced optical aberrations in an optical system using Shack Hartmann wavefront sensor
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Study on decentration induced optical aberrations in an optical system using Shack Hartmann wavefront sensor

机译：使用Shack Hartmann波前传感器研究光学系统中偏心引起的光学像差

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摘要

Alignment of optical components is one of the important requirements in any optical system. Decentration of a component, like a lens, in the path of the beam, would introduce aberrations of various types. This would affect the measurement accuracy in the optical system such as an interferometer. In this work, we have analyzed the influence of decentration of an optical component on the wavefront in an optical system. The various aberrations caused due to the shifting of the axis of a lens in the path of an optical wavefront have been measured using a Shack Hartmann Wavefront Sensor and their influence studied. One of the lenses in the optical system is moved or decentered in transverse direction by 500 μm in steps of 50 μm. Decentration was done for all four quadrants. For each step, wavefront data is been taken and data was analyzed. Defocus, horizontal coma, vertical coma and spherical aberration were analyzed, apart from peak-to-valley and RMS values. Results showed that the error introduced is minimal up to 300 μm decentration, above which the aberrations were quite large. The experimental results and analyses are presented.
机译：光学组件的对准是任何光学系统中的重要要求之一。像透镜这样的部件在光束路径中的偏心会引入各种类型的像差。这将影响干涉仪等光学系统的测量精度。在这项工作中，我们分析了光学组件的偏心对光学系统中波前的影响。已经使用Shack Hartmann波前传感器测量了由于透镜轴在光波前路径中的移动而引起的各种像差，并研究了其影响。光学系统中的一个透镜在横向方向上以50μm的步长移动或偏心500μm。对所有四个象限进行去中心化。对于每个步骤，均采集波前数据并进行数据分析。除峰谷和RMS值外，还分析了散焦，水平彗差，垂直彗差和球差。结果表明，在最大300μm的偏心处引入的误差很小，在此之上，像差非常大。给出了实验结果和分析。

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  • 会议地点 San Diego CA(US)
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    V.Kalikivayi; R. Krishna Kumar; K.Kannan; A.R.Ganesan;

  • 作者单位

    Elite School of Optometry, Unit of Medical Research Foundation, Chennai 600016,India,Department of Mathematics, SastraUniversity,Tirumalaisamudram, Thanjavur 613 402, India;

    Elite School of Optometry, Unit of Medical Research Foundation, Chennai 600016,India;

    Department of Mathematics, SastraUniversity,Tirumalaisamudram, Thanjavur 613 402, India;

    Applied Optics Lab, Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India;

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