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Proceedings Paper

Measurement of aspheric surfaces with 3D-deflectometry
Author(s): I. Scheele; S. Krey; J. Heinisch
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Paper Abstract

Using a high resolution two-dimensional angle sensor, 3D-Deflectometry determines the local slopes of an aspheric surface. The sensor scans the surface in spherical coordinates thus measuring the deviation from a reference sphere. A new fault tolerant software algorithm transfers slope information into surface topography data simultaneously correcting for systematic errors of the instrument. In this way various surface types can be characterized; convex and concave standard shapes as well as toric or even free form surfaces.

Paper Details

Date Published: 14 May 2007
PDF: 4 pages
Proc. SPIE TD04, Optifab 2007: Technical Digest, TD040O (14 May 2007); doi: 10.1117/12.719713
Show Author Affiliations
I. Scheele, Trioptics GmbH (Germany)
S. Krey, Trioptics GmbH (Germany)
J. Heinisch, Trioptics GmbH (Germany)


Published in SPIE Proceedings Vol. TD04:
Optifab 2007: Technical Digest
James J. Kumler; Matthias Pfaff, Editor(s)

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