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Optics Letters

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  • Editor: Anthony J Campillo
  • Vol. 32, Iss. 7 — Apr. 1, 2007
  • pp: 769–771

Shack–Hartmann sensor based on a cylindrical microlens array

M. Ares, S. Royo, and J. Caum  »View Author Affiliations


Optics Letters, Vol. 32, Issue 7, pp. 769-771 (2007)
http://dx.doi.org/10.1364/OL.32.000769


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Abstract

We present a Shack–Hartmann wavefront sensor (SHWS) based on a cylindrical microlens array as a device for measuring highly aberrated wavefronts. Instead of the typical spot pattern created by a conventional SHWS, two orthogonal line patterns are detected on a CCD and are superimposed. A processing algorithm uses the continuity of the focal line to extend the dynamic range of measurement by localizing the line, even if it leaves the CCD area confined by the corresponding microcylinder. The measurement of a wavefront from a progressive addition lens with an 80 λ peak-to-valley value reveals the capabilities of the sensor.

© 2007 Optical Society of America

OCIS Codes
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: November 3, 2006
Revised Manuscript: December 21, 2006
Manuscript Accepted: December 24, 2006
Published: March 5, 2007

Citation
M. Ares, S. Royo, and J. Caum, "Shack-Hartmann sensor based on a cylindrical microlens array," Opt. Lett. 32, 769-771 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-7-769


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References

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