Abstract

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

Absolute interferometric test of aspheres by use of twin computer-generated holograms

Stephan Reichelt, Christof Pruss, and Hans J. Tiziani
Appl. Opt. 42(22) 4468-4479 (2003)

Analysis of the disturbing diffraction orders of computer-generated holograms used for testing optical aspherics

Norbert Lindlein
Appl. Opt. 40(16) 2698-2708 (2001)

Quasi-absolute measurement of aspheres with a combined diffractive optical element as reference

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Appl. Opt. 45(34) 8606-8612 (2006)

Testing aspheric surfaces with computer-generated holograms: analysis of adjustment and shape errors

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Using Computer Generated Holograms to Test Aspheric Wavefronts

J. C. Wyant and V. P. Bennett
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