Patent · US Expired

Photographic camera with interchangeable lens

US4092656A · kind A · utility

7Cited by

2References

4Claims

0Family size

Assignee

Carl Zeiss Stiftung · DE

Inventors

Rudolf Lang · Evergem, BE
Gerhard Schwarz · Altentreptow, DE

Key dates

Filing date	Nov 15, 1976
Grant date	May 30, 1978
Priority date	—
Expiry date	Nov 15, 1996

Classification

Technology area (CPC G)Physics
CPC primaryG03B17/14
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A photographic camera with an interchangeable lens and an electrically driven function actuator for actuating some function of the camera such as the operation of the shutter. The circuit of the function actuator includes a switch responsive to the position of the interchangeable lens, so that the function actuator cannot be operated unless the interchangeable lens is fully seated or engaged in proper operating position.

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