Patent · US Expired

Mirror mechanism for a monocular reflex camera

US4236797A · kind A · utility

2Cited by

2References

3Claims

0Family size

Assignee

VEB Pentacon Dresden Kamera und Kinowerke · DE

Inventors

Rolf Noack · Dresden, DE
Karl Kromer · Dresden, DE
Hans Zimmet · Dresden, DE

Key dates

Filing date	May 17, 1979
Grant date	Dec 2, 1980
Priority date	—
Expiry date	May 17, 1999

Classification

Technology area (CPC G)Physics
CPC primaryG03B19/12
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to a mirror mechanism for a monocular reflex camera with a laminated focal plane shutter, in which at least the opening blades of the shutter are automatically guided back into their initial positions by a spring-operated guidance member after the exposing procedure. To simplify construction of the opening blades return mechanism there is provided an arm on the shutter return mechanism which is capable of being coupled to the swivel lever for the viewfinder mirror when the opening blades move back. The swivel lever can be moved back against the action of a spring and held by a catch.

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