B-spline optimization of optical glasses especially spectacle glasses with planes of symmetry

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United States of America Patent

PATENT NO 6974214
APP PUB NO 20040114100A1
SERIAL NO

10467717

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
RODENSTOCK GMBHELSENHEIMERSTR 33 MÜNCHEN 80687

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Altheimer, Helmut Lauchdorf, DE 72 512
Baumbach, Peter Munich, DE 16 91
Dorsch, Rainer Munich, DE 24 60
Esser, Gregor Munich, DE 70 436
Haimerl, Walter Munich, DE 33 194
Pfeiffer, Herbert Munich, DE 30 238
Welk, Andrea Munich, DE 35 205

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