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9 November 2012 The measurement of optical and geometric parameters by a coordinate measuring machine
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Abstract
Optical parameters such as radius of curvature (RoC), direction of the optical axis, offset of the apex relative to the outer diameter, et al. of the primary mirror of a Cassegrain telescope by a coordinate measuring machine (CMM) is presented. These parameters are measured by a novel technique developed by the authors. RoC, tilt, and wedge of a lens can also be measured by the technique. Geometric parameters, such as diameters, central obscuration diameter, and perpendicularity of mirror edge, the mirror, et al. can be measured taking the advantage of the geometric measurement function. The optical and geometric parameters are measured by this method on a set of primary and secondary mirrors, and four corrector lenses of a Cassegrain telescope.
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Shenq-Tsong Chang, Wei-Cheng Lin, Ting-Ming Huang, Ming-Yin Hsu, Po-Hsuan Huang, and Yu-Chuan Lin "The measurement of optical and geometric parameters by a coordinate measuring machine", Proc. SPIE 8527, Multispectral, Hyperspectral, and Ultraspectral Remote Sensing Technology, Techniques and Applications IV, 85270T (9 November 2012); https://doi.org/10.1117/12.977364
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