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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 12 — Apr. 20, 2008
  • pp: 2133–2145

Three-flat test with plates in horizontal posture

Maurizio Vannoni and Giuseppe Molesini  »View Author Affiliations


Applied Optics, Vol. 47, Issue 12, pp. 2133-2145 (2008)
http://dx.doi.org/10.1364/AO.47.002133


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Abstract

Measuring flats in the horizontal posture with interferometers is analyzed in detail, taking into account the sag produced by gravity. A mathematical expression of the bending is provided for a plate supported at three unevenly spaced locations along the edge. It is shown that the azimuthal terms of the deformation can be recovered from a three-flat measuring procedure, while the pure radial terms can only be estimated. The effectiveness of the iterative algorithm for data processing is also demonstrated. Experimental comparison on a set of three flats in horizontal and upright posture is provided.

© 2008 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: January 9, 2008
Revised Manuscript: March 20, 2008
Manuscript Accepted: March 24, 2008
Published: April 18, 2008

Citation
Maurizio Vannoni and Giuseppe Molesini, "Three-flat test with plates in horizontal posture," Appl. Opt. 47, 2133-2145 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-12-2133


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