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.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/622001 |
| Date | 27 September 2016 |
| Creators | Zhao, Wenchuan, Graves, Logan R., Huang, Run, Song, Weihong, Kim, DaeWook |
| Contributors | Univ 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) |
| Publisher | SPIE-INT SOC OPTICAL ENGINEERING |
| Source Sets | University of Arizona |
| Language | English |
| Detected Language | English |
| Type | Article |
| Rights | © 2016 SPIE |
| Relation | http://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2243264 |
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