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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 25 — Sep. 1, 2011
  • pp: 4977–4981

Null test for a deeply aspheric lens

Roderick Willstrop  »View Author Affiliations


Applied Optics, Vol. 50, Issue 25, pp. 4977-4981 (2011)
http://dx.doi.org/10.1364/AO.50.004977


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Abstract

A null test is described for a deeply aspheric lens. This test uses a spherical mirror that would be unable to produce enough distortion of the reflected wavefront to compensate for the asphericity of the lens if this were to be tested in air. Immersion of the lens ( n = 1.523 ) in a small water tank ( n = 1.333 ) reduces the wavefront distortion produced by the lens to about one-third of its value when in air, which is sufficient to allow compensation. The sensitivity of the test is also reduced by a factor of nearly 3, but this is of little importance in the application described below. It is thought that this use of a water tank may be original.

© 2011 Optical Society of America

OCIS Codes
(080.2740) Geometric optics : Geometric optical design
(080.3620) Geometric optics : Lens system design
(120.4630) Instrumentation, measurement, and metrology : Optical inspection
(220.1000) Optical design and fabrication : Aberration compensation
(220.4840) Optical design and fabrication : Testing

History
Original Manuscript: May 26, 2011
Manuscript Accepted: June 20, 2011
Published: August 26, 2011

Virtual Issues
September 2, 2011 Spotlight on Optics

Citation
Roderick Willstrop, "Null test for a deeply aspheric lens," Appl. Opt. 50, 4977-4981 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-25-4977


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References

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