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Shape measurement of freeform optics
Author(s): Andreas Beutler
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Paper Abstract

Compared to spherical and aspherical lenses freeform shapes are much more challenging for the measurement required in the production process. A lot of metrology systems available for measuring spheres and aspheres are not capable of measuring freeforms. In addition lenses with a freeform surface may also contain reference elements whose position has to be determined. However, there are a few types of instruments which can in principle perform measurements of freeforms. Challenges of measuring freeforms are discussed and different types of potential measuring instruments and their capabilities are presented. This is demonstrated providing measuring results from different samples measured with different instruments.

Paper Details

Date Published: 15 June 2018
PDF: 7 pages
Proc. SPIE 10692, Optical Fabrication, Testing, and Metrology VI, 106920O (15 June 2018); doi: 10.1117/12.2314588
Show Author Affiliations
Andreas Beutler, Mahr GmbH (Germany)


Published in SPIE Proceedings Vol. 10692:
Optical Fabrication, Testing, and Metrology VI
Sven Schröder; Roland Geyl, Editor(s)

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