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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 19 — Jul. 1, 2003
  • pp: 3903–3909

Precise focal-length measurement technique with a reflective Fresnel-zone hologram

Brian DeBoo and Jose Sasian  »View Author Affiliations


Applied Optics, Vol. 42, Issue 19, pp. 3903-3909 (2003)
http://dx.doi.org/10.1364/AO.42.003903


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Abstract

A new technique for precise focal-length measurements with a hologram is presented. This technique is widely applicable and is particularly useful for measuring large, slow lenses. In diffraction, the Fresnel-zone plate hologram emulates the reflective properties of a convex spherical mirror for use during transmission null tests of an optic by use of a phase-shifting interferometer. The hologram is written lithographically and therefore offers a higher degree of precision at a lower cost than its spherical mirror counterpart. A hologram offers the additional benefit of easy characterization by use of the same interferometer employed in examining the test optic. Better than ±0.01% precision is achieved during measurement of a 9-m focal-length lens by use of a 150-mm aperture interferometer.

© 2003 Optical Society of America

OCIS Codes
(090.1970) Holography : Diffractive optics
(090.2890) Holography : Holographic optical elements
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3620) Instrumentation, measurement, and metrology : Lens system design
(220.4840) Optical design and fabrication : Testing

History
Original Manuscript: January 28, 2003
Revised Manuscript: April 1, 2003
Published: July 1, 2003

Citation
Brian DeBoo and Jose Sasian, "Precise focal-length measurement technique with a reflective Fresnel-zone hologram," Appl. Opt. 42, 3903-3909 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-19-3903

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