Prescription-dependent and individualization-dependent modification of the temporal peripheral nominal astigmatism and adaptation of the object distance function to changed object distances for near and far vision
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United States of America Patent
Stats
-
May 2, 2017
Grant Date -
Apr 30, 2015
app pub date -
Jan 9, 2015
filing date -
Oct 21, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Method for optimization of a progressive spectacle lens, including: defining a starting nominal astigmatism distribution for the spectacle lens; determining a transformed nominal astigmatism distribution and optimizing the spectacle lens on the basis of the transformed nominal astigmatism distribution, wherein the determination of a transformed nominal astigmatism distribution comprises multiplication of the maximum temporal nominal astigmatism of the starting nominal astigmatism distribution by a factor k as a result of which a modified maximum temporal astigmatism is obtained, wherein k is a function of a prescription value, and/or at least of one parameter of the spectacle lens or of the arrangement thereof in front of the eyes, and transformation of the starting nominal astigmatism distribution on the basis of the modified maximum temporal astigmatism.
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International Classification(s)
- 2015 Application Filing Year
- G02C Class
- 638 Applications Filed
- 512 Patents Issued To-Date
- 80.26 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- G02C Class
- 0 % this patent is cited more than
- 8 Age
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