Patent · US Active

Method for determining far and near reference points

US8356896B2 · kind B2 · utility

5Cited by

4References

23Claims

0Family size

Assignee

RODENSTOCK GMBH · DE

Inventors

Gregor Esser · Munich, DE
Nadine Jung · Munich, DE
Katrin Nicke · Schwanau, DE
Ilka Schwarz · Geretsried, DE
Andrea Welk · Munich, DE
Martin L. Zimmerman · Chicago, US

Key dates

Filing date	Jan 25, 2008
Grant date	Jan 22, 2013
Priority date	—
Expiry date	Jun 19, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG02C13/005
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to a method for specifying or determining the spatial position of a distance reference point and/or a near reference point of a progressive spectacle lens for correcting defective vision of a spectacle wearer. Said method consists of the following steps: individual data of the spectacle wearer is obtained; the individual vertical and/or the horizontal position of the distance reference point and/or the near reference point is determined or calculated in accordance with the determined individual data of the spectacle wearer.

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