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Proceedings Paper

Precision aspheric optics testing with SCOTS: a deflectometry approach
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Paper Abstract

Absolute measurement with SCOTS/deflectometry is a calibration problem. We use a laser tracker to calibrate the test geometry. The performance id demonstrated with the initial measurement results from the Large Synoptic Survey Telescope tertiary mirror. Systematic errors from the camera are carefully controlled. Camera pupil imaging aberration is removed with an external aperture stop. Imaging aberration and other inherent errors are suppressed with a rotation test. Results show that the SCOTS can act as a large dynamic range, high precision, non-null test method for precision aspheric optics. The SCOTS test can achieve measurement accuracy comparable with the traditional interferometric testing.

Paper Details

Date Published: 13 May 2013
PDF: 7 pages
Proc. SPIE 8788, Optical Measurement Systems for Industrial Inspection VIII, 87881E (13 May 2013); doi: 10.1117/12.2020721
Show Author Affiliations
Peng Su, College of Optical Sciences, The Univ. of Arizona (United States)
Manal Khreishi, College of Optical Sciences, The Univ. of Arizona (United States)
Run Huang, College of Optical Sciences, The Univ. of Arizona (United States)
Tianquan Su, College of Optical Sciences, The Univ. of Arizona (United States)
James H. Burge, College of Optical Sciences, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 8788:
Optical Measurement Systems for Industrial Inspection VIII
Peter H. Lehmann; Wolfgang Osten; Armando Albertazzi, Editor(s)

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