Reflex camera having a focal plane shutter and an interchangeable variable shutter objective
US4354753A · kind A · utility
Inventors
Key dates
| Filing date | May 7, 1981 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | May 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.