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Proceedings Paper

Revisiting the Hartmann test
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Paper Abstract

We have implemented a variation of the classical Hartmann test on a commercial lens bench. We use a single motorized aperture for scanning in X,Y, an image analysis microscope with CCD detector, and image processing software. In a short time, it is possible to measure and plot the wavefront tilt at hundreds of points across the entrance pupil. The technique combines both high sensitivity and large dynamic range. For example, is possible to measure wavefront tilt to 1/200 wave across a 1.5 mm sampling aperture. The high dynamic range allows useful measurement of poorly molded plastic lenses whose surface figure would not yield useable fringes on an interferometer.

Paper Details

Date Published: 22 December 2003
PDF: 7 pages
Proc. SPIE 5180, Optical Manufacturing and Testing V, (22 December 2003); doi: 10.1117/12.514264
Show Author Affiliations
Benjamin A. Wells, Wells Research and Development (United States)
John Myrick, ThorLabs Inc. (United States)

Published in SPIE Proceedings Vol. 5180:
Optical Manufacturing and Testing V
H. Philip Stahl, Editor(s)

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