Patent · US Active

Optical lens blank, a blank assortment and a method for the production of lenses

US10168548B2 · kind B2 · utility

0Cited by
4References
16Claims
0Family size

Assignee

Inventor

Key dates

Filing dateFeb 15, 2017
Grant dateJan 1, 2019
Priority date—
Expiry dateFeb 15, 2037

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02C2202/08
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An optical lens blank includes a first and a second lens surface, which are arranged opposite each other and which are delimited at a lens circumference, wherein the first lens surface has a surface geometry that corresponds to a first partial cutout from a first melon shape. A range of blanks consisting of such lens blanks have first lens surfaces of varying degrees of curvature, wherein the different degrees of curvature are based on different melon shapes. Finally, a method for producing a spectacle lens from such an optical lens blank includes mechanically shaping at least the first or second surface, and separating a cutout from the mechanically shaped lens blank.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.