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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 16 — Jun. 1, 1999
  • pp: 3542–3548

Focal-length measurement by multiple-beam shearing interferometry

Kiyofumi Matsuda, Thomas H. Barnes, Bob F. Oreb, and Colin J. R. Sheppard  »View Author Affiliations


Applied Optics, Vol. 38, Issue 16, pp. 3542-3548 (1999)
http://dx.doi.org/10.1364/AO.38.003542


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Abstract

The application of multiple-beam shearing interferometry to lens focal-length measurement is described. A coated shearing plate interferometer was used in transmission to produce sharp multiple-beam fringes that rotate as the collimation of the incoming wave front from the lens under test changes. The test lens was used to collimate light from a point source that was translated longitudinally, and the focal length was determined from the rate of rotation of the fringes as the source moved. This method is simple, accurate, and lends itself to automatic determination of focal length.

© 1999 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.4610) Instrumentation, measurement, and metrology : Optical fabrication
(220.1140) Optical design and fabrication : Alignment
(220.3630) Optical design and fabrication : Lenses
(220.4840) Optical design and fabrication : Testing

History
Original Manuscript: October 26, 1998
Revised Manuscript: February 16, 1999
Published: June 1, 1999

Citation
Kiyofumi Matsuda, Thomas H. Barnes, Bob F. Oreb, and Colin J. R. Sheppard, "Focal-length measurement by multiple-beam shearing interferometry," Appl. Opt. 38, 3542-3548 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-16-3542


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References

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