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Iterative surface construction for blind deflectometry

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.

Identiferoai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/622001
Date27 September 2016
CreatorsZhao, Wenchuan, Graves, Logan R., Huang, Run, Song, Weihong, Kim, DaeWook
ContributorsUniv Arizona, Coll Opt Sci, Institute of Optics and Electronics (China), College of Optical Sciences, The Univ. of Arizona (United States), College of Optical Sciences, The Univ. of Arizona (United States), Institute of Optics and Electronics (China), College of Optical Sciences, The Univ. of Arizona (United States)
PublisherSPIE-INT SOC OPTICAL ENGINEERING
Source SetsUniversity of Arizona
LanguageEnglish
Detected LanguageEnglish
TypeArticle
Rights© 2016 SPIE
Relationhttp://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2243264

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