B-spline optimization of optical glasses especially spectacle glasses with planes of symmetry
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 13, 2005
Grant Date -
Jun 17, 2004
app pub date -
Feb 12, 2002
filing date -
Feb 12, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for optimizing an atoroidal surface of an optical lens, in particular a spectacle lens, having at least one plane of symmetry is characterized by a combination of the following features: dividing the atoroidal surface having at least one plane of symmetry into at least two regions separated by the at least one plane of symmetry; representing one of the separate regions (represented region) of this surface by a set of coefficients of B spline functions; computing sagittal heights of the represented region by B spline interpolation; computing sagittal heights in at least one other region by mirroring coefficients or coordinates at the at least one plane of symmetry; and optimizing the atoroidal surface only by varying the set of B spline coefficients of the represented region.
First Claim
Other Claims data not available
