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Applied Optics

Applied Optics


  • Vol. 41, Iss. 13 — May. 1, 2002
  • pp: 2440–2447

Dual-wave-front computer-generated holograms for quasi-absolute testing of aspherics

Mathias Beyerlein, Norbert Lindlein, and Johannes Schwider  »View Author Affiliations

Applied Optics, Vol. 41, Issue 13, pp. 2440-2447 (2002)

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Testing of aspherics by means of computer-generated holograms (CGHs) is well known. To perform a quasi-absolute test of rotationally symmetric aspheric surfaces, two wave fronts must be encoded in the CGH. Both the null lens and a spherical lens have to be stored. This enables successive measurements of the aspheric and of a cat’s-eye position without changing the object arm of the interferometer. Two possibilities for encoding both wave fronts have been investigated. A first-order approximation for estimating the influence of disturbing diffraction orders is given.

© 2002 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
(220.1250) Optical design and fabrication : Aspherics
(220.4830) Optical design and fabrication : Systems design
(220.4840) Optical design and fabrication : Testing

Original Manuscript: April 17, 2001
Revised Manuscript: December 4, 2001
Published: May 1, 2002

Mathias Beyerlein, Norbert Lindlein, and Johannes Schwider, "Dual-wave-front computer-generated holograms for quasi-absolute testing of aspherics," Appl. Opt. 41, 2440-2447 (2002)

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