Patent · US Active

Method and apparatus for identifying interchangeable lenses

US7848634B2 · kind B2 · utility

19Cited by

9References

6Claims

0Family size

Assignee

Leica Camera AG · DE

Inventors

Gerhard Kranz · Wetzlar, DE
Oliver Zielberg · Wetzlar, DE
Robert Denk · Grafing, DE
Ulrich Lies · Wetzlar, DE

Key dates

Filing date	Apr 20, 2007
Grant date	Dec 7, 2010
Priority date	—
Expiry date	Jul 14, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04N23/663
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An interchangeable lens connects in a prescribed position to a support surface on a camera of a camera system using a locking apparatus. A method and apparatus for identifying interchangeable lenses uses optical radiation. After the locking operation is performed, a defined optical radiation is directed from two or more, preferably six, light transmitters arranged in the support surface to reflecting or absorbing surfaces on the locking apparatus which are assigned to said light transmitters. The radiation returning from the respective reflecting/absorbing surfaces is picked up by light receivers arranged next to the light transmitters in the support surface. A binary coded signal for identifying the interchangeable lens is formed from the output signals of the light receivers.

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