Paper Title:
Measurement of Progressive Addition Lenses
  Abstract

Methods on the measurement of progressive addition lenses (PALs) are summarized. Principles and characteristics of several comparatively promising kinds of methods based on Computer-aided Focimeters, optical sampling (Hartmann Testing, Ronchi Inspecting etc.) and Moiré Deflection Technology (MDT) are described. Corresponding typical arrangements of the measurement devices used in these methods are provided too. After being compared with each other in their features, their respective advantages and application limitations are analyzed. Also, the new development tendencies of these methods are discussed. Based on foregoing comparison and analysis, key problems and difficulties on the measurement of progressive addition lenses are put forward. In the end, the future of the inspection of progressive addition lenses is proposed.

  Info
Periodical
Key Engineering Materials (Volumes 364-366)
Edited by
Guo Fan JIN, Wing Bun LEE, Chi Fai CHEUNG and Suet TO
Pages
1048-1053
DOI
10.4028/www.scientific.net/KEM.364-366.1048
Citation
Q. Wang, J. C. Yu, H. Chen, "Measurement of Progressive Addition Lenses", Key Engineering Materials, Vols. 364-366, pp. 1048-1053, 2008
Online since
December 2007
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Price
$32.00
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