Patent · US Expired

Reflex camera having a focal plane shutter and an interchangeable variable shutter objective

US4354753A · kind A · utility

5Cited by
2References
10Claims
0Family size

Inventors

Key dates

Filing dateMay 7, 1981
Grant dateOct 19, 1982
Priority date
Expiry dateMay 7, 2001

Classification

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

Abstract

Reflex camera having a focal plane shutter in the camera body and a time adjuster associated with the focal plane shutter, and an interchangeable variable central shutter objective and a time adjuster associated with the central shutter, the focal plane shutter adjuster having a setting position "C" (central shutter) in which the central shutter of the objective can be used for exposure settings, and the objective shutter adjuster having a setting position "F" (focal plane shutter) in which a lock is operated to block the closure drive of the shutter segment system of the central shutter so that the focal plane shutter can be used.

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