Method for calculation of the magnification and/or distortion and method for production of a spectacle lens with low magnification and/or distortion
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United States of America Patent
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Aug 12, 2014
Grant Date -
Aug 5, 2010
app pub date -
Nov 24, 2006
filing date -
Dec 1, 2005
priority date (Note) -
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Abstract
The invention relates to a method for calculation of the local magnification and/or the local distortion of a spectacle lens in at least one predetermined or predeterminable viewing direction, with the spectacle lens being designed to correct a refraction deficit of an eye, and having at least one object-side surface and one second eye-side surface, comprising the following steps: Calculation for the predetermined or predeterminable viewing direction of the profile of a main beam which originates from a predetermined or predeterminable infinitesimally small object and, after refraction by the spectacle lens, passes through the rotation point of the eye, through the entrance pupil of the eye or through the principal plane of the eye; determination of the main curvatures and directions of a local wavefront associated with the main beam on refraction by the spectacle lens; calculation of the local magnification and/or the local distortion of the spectacle lens from the determined main curvatures and directions of the local wavefront, the data relating to the profile of the main beam, and the data relating to the spectacle lens.
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- RODENSTOCK GMBH
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Altheimer, Helmut | Baisweil-Lauchdorf, DE | 80 | 718 |
Becken, Wolfgang | Munich, DE | 40 | 338 |
Esser, Gregor | Munich, DE | 77 | 620 |
Uttenweiler, Dietmar | Munich, DE | 27 | 366 |
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