Patent · US Active

Method for determining the far visual point for a spectacle lens and system therefor

US9971172B2 · kind B2 · utility

4Cited by

3References

16Claims

0Family size

Assignee

Carl Zeiss Vision International GmbH · DE

Inventors

Jesús-Miguel Cabeza-Guillén · Aalen, DE
Subhashini Mani · Waiblingen, DE
Michael Gamperling · Leipheim, DE

Key dates

Filing date	Sep 23, 2016
Grant date	May 15, 2018
Priority date	—
Expiry date	Oct 4, 2036

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B3/111
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention is directed to a method allowing the exact determination of the far visual point on spectacle lenses in a spectacle frame for a subject while taking into account the habitual head position or body posture. The method renders it possible to specify the coordinates of the far visual point on spectacle lenses in a coordinate system that is fixed in relation to the spectacle frame coordinate system. The invention also relates to a system carrying out the method.

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