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Automated collimation testing by incorporating the Fourier transform method in Talbot interferometry

机译:通过将傅里叶变换方法结合到Talbot干涉仪中进行自动准直测试

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摘要

In this paper, we report an automated technique for collimation testing by incorporating Fourier fringe analysis of the recorded interferograms in Talbot interferometry. The triangular profile of Talbot interferometric fringes has been recorded using a CCD and computer system. The interferograms corresponding to the in-focus, at-focus, and out-of-focus positions of the collimating lens have been recorded. Direct phase measurement using the Fourier transform method has been used for detection of collimation positions. Good accuracy and precision in measurement have been achieved.
机译:在本文中,我们通过在Talbot干涉测量法中对记录的干涉图进行傅里叶条纹分析,报告了一种准直测试的自动化技术。 Talbot干涉条纹的三角形轮廓已使用CCD和计算机系统记录下来。已经记录了与准直透镜的焦点对准,焦点对准和焦点对准位置的干涉图。使用傅里叶变换法的直接相位测量已被用于准直位置的检测。已实现良好的测量精度和精确度。

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