Abstract

We present a method that accurately measures large optical surfaces before polishing using a laser tracker. Using the scanning mode of the laser tracker considerably improves measurement efficiency and minimizes the dominant errors caused by environmental change. We use this method to measure a \Phi 1.3-m aspheric mirror and obtain a measurement uncertainty of 0.72 \mu m (root mean square, RMS).

© 2013 Chinese Optics Letters

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