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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 5 — Feb. 10, 2008
  • pp: 644–651

Point shifting in the optical testing of fast aspheric concave surfaces by a cylindrical screen

V. I. Moreno-Oliva, M. Campos-García, R. Bolado-Gómez, and R. Díaz-Uribe  »View Author Affiliations


Applied Optics, Vol. 47, Issue 5, pp. 644-651 (2008)
http://dx.doi.org/10.1364/AO.47.000644


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Abstract

A method for increasing the precision and sensitivity of the quantitative evaluation of fast aspheric surfaces through the null screen method is presented. This consists of applying small displacements to the cylindrical null screen along the optical axis. These movements allow a scan of the image spots over zones that with the analysis of a single image are more difficult to evaluate. The precision of the test is increased due to a greater density of sampling reducing the numerical errors during the integration. Results of the evaluation of an elliptical concave mirror on axis show that the numerical integration errors can be reduced from 20% for short paths to 80% for larger integration paths.

© 2008 Optical Society of America

OCIS Codes
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
(220.1250) Optical design and fabrication : Aspherics
(220.4840) Optical design and fabrication : Testing

ToC Category:
Optical Design and Fabrication

History
Original Manuscript: August 28, 2007
Revised Manuscript: December 7, 2007
Manuscript Accepted: December 9, 2007
Published: February 4, 2008

Citation
V. I. Moreno-Oliva, M. Campos-García, R. Bolado-Gómez, and R. Díaz-Uribe, "Point shifting in the optical testing of fast aspheric concave surfaces by a cylindrical screen," Appl. Opt. 47, 644-651 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-5-644

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