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1. CA2306902 - IMPROVED OPHTHALMIC LENS

Office Canada
Application Number 2306902
Application Date
Publication Number 2306902
Publication Date 14.05.1999
Publication Kind A1
IPC
G02C 7/04
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
7Optical parts
02Lenses; Lens systems
04Contact lenses for the eyes
G02C 7/02
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
7Optical parts
02Lenses; Lens systems
G02C 7/06
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
7Optical parts
02Lenses; Lens systems
06bifocal; multifocal
CPC
G02C 7/028
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
7Optical parts
02Lenses; Lens systems ; ; Methods of designing lenses
024Methods of designing ophthalmic lenses
028Special mathematical design techniques
G02C 2202/22
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
2202Generic optical aspects applicable to one or more of the subgroups of G02C7/00
22Correction of higher order and chromatic aberrations, wave front measurement and calculation
Applicants SOLA INTERNATIONAL HOLDINGS LTD.
Inventors VARNAS, SAULIUS RAYMOND
MILLER, ANTHONY DENNIS
Priority Data PP 0161 03.11.1997 AU
Title
(EN) IMPROVED OPHTHALMIC LENS
(FR) VERRE CORRECTEUR AMELIORE
Abstract
(EN)
An ophthalmic lens element having a first surface and an atoroidal or generally aspheric second surface. The second surface is described by a symetric polynomial whose coefficients have been chosen to minimise a merit function constructed of the sum of a particular optical aberration over substantially the entire surface thereof.

Also published as
MXPA/a/2000/004160
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