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Proceedings Paper

Testing of progressive spectacle lenses by coded optical correlation
Author(s): Liren Lin
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Paper Abstract

An incoherent optical correlator is developed to contour-map progressive power lenses, and the beam deviations across the aperture of a tested lens can be read by the disfocal shifting of one mask. A modelling of a local area of progressive lens to an extended sphere-cylindric lens is suggested to calculate the optical properties from the measured deviations in the local area. Thus the optical properties across the whole aperture can be achieved.

Paper Details

Date Published: 2 August 1995
PDF: 4 pages
Proc. SPIE 2576, International Conference on Optical Fabrication and Testing, (2 August 1995); doi: 10.1117/12.215601
Show Author Affiliations
Liren Lin, Shanghai Institute of Optics and Fine Mechanics (China)

Published in SPIE Proceedings Vol. 2576:
International Conference on Optical Fabrication and Testing
Toshio Kasai, Editor(s)

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