METHOD FOR CREATING A SETTING FOR TRIMMING AN OPHTHALMIC LENS

The method involves calculating differences between a two-dimensional projection of a longitudinal profile of rims (11) of a spectacle frame e.g. full-rim spectacle frame (10), and a set of predetermined geometrical figures on the projection. A target geometrical figure that is closest to the longit...

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Bibliographic Details
Main Authors ERIC BELLONI, DAVID FRESON, FREDERIC DUBOIS
Format Patent
LanguageEnglish
Portuguese
Published 24.04.2012
Subjects
CONTACT LENSES
DRESSING OR CONDITIONING OF ABRADING SURFACES
FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
GRINDING
MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
OPTICS
PERFORMING OPERATIONS
PHYSICS
POLISHING
SPECTACLES
SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES
TRANSPORTING
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Summary:The method involves calculating differences between a two-dimensional projection of a longitudinal profile of rims (11) of a spectacle frame e.g. full-rim spectacle frame (10), and a set of predetermined geometrical figures on the projection. A target geometrical figure that is closest to the longitudinal profile is selected among a set of target geometrical figures associated to trimming parameters according to the differences. A trimming setpoint is calculated according to the shape of the longitudinal profile and the trimming parameter of the selected target geometrical figure. An independent claim is also included for a method for configuring a device to prepare an ophthalmic lens.
Bibliography:Application Number: PT20100290467T