@inproceedings{cfda0f38ef504d09968c4ec65f9ec491,
title = "Precision aspheric optics testing with SCOTS: A deflectometry approach",
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.",
keywords = "Aspherics, Deflectometry, Free-form surface, Fringe reflection, Hartmann test, Optical metrology, Optical testing",
author = "Peng Su and Manal Khreishi and Run Huang and Tianquan Su and Burge, {James H.}",
year = "2013",
month = aug,
day = "1",
doi = "10.1117/12.2020721",
language = "English (US)",
isbn = "9780819496041",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Optical Measurement Systems for Industrial Inspection VIII",
note = "Optical Measurement Systems for Industrial Inspection VIII ; Conference date: 13-05-2013 Through 16-05-2013",
}