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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 8, Iss. 7 — Aug. 1, 2013

Inspection of freeform intraocular lens topography by phase measuring deflectometric methods

Alexis Speck, Benedikt Zelzer, Marc Kannengießer, Achim Langenbucher, and Timo Eppig  »View Author Affiliations

Applied Optics, Vol. 52, Issue 18, pp. 4279-4286 (2013)

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Manufacturing spherical, aspheric, and freeform surfaces requires testing throughout the development and production process. State-of-the-art topography measurement is limited in applicability for intraocular lenses (IOLs), and there is no dedicated commercial surface measurement system available for freeform IOLs. The purpose of this work was to validate a deflectometric setup for surface measurement, detection of defects, and shape fidelity analysis for the development and production of IOLs. The setup is based on a phase measuring deflectometer with a field-of-view of 80mm×80mm and a mean repetition accuracy of 1.6·103D. The technique is suitable for detection of global and local surface errors, extracted from geometry and topography analysis. For validation according to DIN ISO 5725:2002, spherical IOLs with radii of curvature of 10 and 20 mm, a commercial aspheric IOL, and single-sided freeform IOL samples were used.

© 2013 Optical Society of America

OCIS Codes
(040.1490) Detectors : Cameras
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(170.0170) Medical optics and biotechnology : Medical optics and biotechnology
(230.0230) Optical devices : Optical devices
(240.0240) Optics at surfaces : Optics at surfaces
(350.0350) Other areas of optics : Other areas of optics

ToC Category:
Optical Design and Fabrication

Original Manuscript: April 3, 2013
Revised Manuscript: May 16, 2013
Manuscript Accepted: May 17, 2013
Published: June 18, 2013

Virtual Issues
Vol. 8, Iss. 7 Virtual Journal for Biomedical Optics

Alexis Speck, Benedikt Zelzer, Marc Kannengießer, Achim Langenbucher, and Timo Eppig, "Inspection of freeform intraocular lens topography by phase measuring deflectometric methods," Appl. Opt. 52, 4279-4286 (2013)

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