Patent · US Active

Error-tolerant progressive glass design

US7771047B2 · kind B2 · utility

0Cited by

3References

18Claims

0Family size

Assignee

RODENSTOCK GMBH · DE

Inventors

Helmut Altheimer · Munich, DE
Gregor Esser · Munich, DE
Andrea Welk · Munich, DE
Leonhard Schmid · Raisting, DE
Martin Zimmermann · Abensberg, DE
Kerstin Schmid · Fürstenfeldbruck, DE
Norbet Awrath · Birkenfeld, DE
Jochen Brosig · Grünwald, DE
Winfried Nikolaus · Haar, DE
Werner Muller · Oberkochen, DE
Ilka Schwarz · Geretsried, DE

Key dates

Filing date	Aug 17, 2004
Grant date	Aug 10, 2010
Priority date	—
Expiry date	Aug 17, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG02C7/027
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A method of producing a progressive spectacle glass by defining an ordering value for the average use value in the far reference point of the progressive spectacle glass, calculating the progressive spectacle glass while taking into account a calculation value of the average use value in the far reference point, the calculation value having a negative desired refraction deviation between 0.03 dpt and 0.2 dpt with respect to the ordering value in the far reference point, and producing the calculated progressive spectacle glass.

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