Testing of large optical surfaces with subaperture stitching
Applied Optics, Vol. 46, Issue 17, pp. 3504-3509 (2007)
http://dx.doi.org/10.1364/AO.46.003504
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Abstract
Based on our previously proposed subaperture stitching and localization (SASL) algorithm, we present strategies and a prototype for testing of large optical surfaces with subaperture stitching. First, several strategies are introduced to deal with new problems when applying the SASL algorithm to large surfaces. The uncertainty of the lateral scale of the interferometer is compensated in the same manner as that of the radii of best-fit spheres in the algorithm. Then the coarse–fine stitching strategy is proposed to stitch tens of subapertures efficiently. Second, a prototype for testing of large surfaces with subaperture stitching is developed with a welded structural base. The model of kinematics is built to determine the initial configuration of each subaperture, according to the records of nulling motion. The uncertainty of linear motion is required to be no more than 1 mm, taking advantage of the large range of convergence of the SASL algorithm. Finally we present an experiment to verify the validity of the method and the prototype. A spherical surface is tested and successfully stitched with 37 subapertures.
© 2007 Optical Society of America
OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.4630) Instrumentation, measurement, and metrology : Optical inspection
(220.4840) Optical design and fabrication : Testing
ToC Category:
Instrumentation, Measurement, and Metrology
History
Original Manuscript: February 6, 2007
Manuscript Accepted: March 5, 2007
Published: May 18, 2007
Citation
Shanyong Chen, Shengyi Li, Yifan Dai, and Ziwen Zheng, "Testing of large optical surfaces with subaperture stitching," Appl. Opt. 46, 3504-3509 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-17-3504
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