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Proceedings Paper

Iterative surface construction for blind deflectometry
Author(s): Wenchuan Zhao; Logan R. Graves; Run Huang; Weihong Song; DaeWook Kim
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Paper Abstract

Freeform optics provide excellent performance for a wide variety of applications. However, obtaining an accurate freeform surface measurement is highly challenging due to its large aspheric/freeform departure. It has been proven that SCOTS (Software Configurable Optical Test System), an advanced deflectometry system developed at the University of Arizona, can measure the departure of a freeform surface from the desired shape with nanometer accuracy. Here, a new data processing technique was used to measure a freeform surface without any prior knowledge of the shape of the surface. Knowing only the geometry of one point on the test surface, this method can take a blind measurement of a freeform surface and arrive at the true surface through iterative construction.

Paper Details

Date Published: 27 September 2016
PDF: 6 pages
Proc. SPIE 9684, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment, 96843X (27 September 2016); doi: 10.1117/12.2243264
Show Author Affiliations
Wenchuan Zhao, Institute of Optics and Electronics (China)
College of Optical Sciences, The Univ. of Arizona (United States)
Logan R. Graves, College of Optical Sciences, The Univ. of Arizona (United States)
Run Huang, College of Optical Sciences, The Univ. of Arizona (United States)
Weihong Song, Institute of Optics and Electronics (China)
DaeWook Kim, College of Optical Sciences, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 9684:
8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment
Yudong Zhang; Fan Wu; Ming Xu; Sandy To, Editor(s)

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