9 November 2010 Development of a real time MTF test bench for visible optical systems
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Abstract
A real-time MTF test bench for visible optical systems is presented in this paper. This test bench can perform quick on-axis and off-axis MTF measurement of optical systems whose aperture are less than 200mm in visible wavelength. A high quality off-axis parabolic collimator is used as object generator of this test bench. The image analyzer is a microscopy with CCD camera installed on a multi-axis motion stage. The software of this MTF test bench provides a good interface for the operators to set measurement parameters and control this bench. Validation of this test bench, performed with a 50mm plano-convex audit lens, shows that MTF measurement error of this bench is within 0.04. Besides MTF measurement, this bench can also perform effective focal length (EFL) and back focal length (BFL) without any hardware modification. Transmittance of optical system can also be performed on this bench with an integrating sphere.
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Xinhua Chen, Yuheng Chen, Jiming Fan, Chunchang Xiang, Weimin Shen, "Development of a real time MTF test bench for visible optical systems", Proc. SPIE 7849, Optical Design and Testing IV, 784926 (9 November 2010); doi: 10.1117/12.870157; https://doi.org/10.1117/12.870157
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