The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2014
Filed:
Sep. 07, 2011
Roland Mandler, Heuchelheim, DE;
Roland Mandler, Heuchelheim, DE;
OptoTech Optikmaschinen GmbH, Wettenberg, DE;
Abstract
A method for producing spectacle lenses from raw lenses prefabricated in a non-cutting manner uses raw lenses having a central geometric axis standing vertically on them. The lens comprises a convex front side that is formed in a rotationally symmetrical manner about the central axis and is not to be reworked and an opposing back side that is to be reworked with a CNC machine. The front- and back side have at least one optical focal point in common. In order to rework the back side a prescription surface is calculated on the basis of a prescription and of the geometry of the front side. This surface forms a prescription lens in common with the front side, the focal points of which lens correct the visual error of the prescription holder. A spectacle lens with an optical center is produced from the prescription lens for use in an eyeglass frame.