Photographic camera
US4354752A · kind A · utility
Inventor
Key dates
| Filing date | Apr 13, 1981 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Apr 13, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/38
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic camera having a rear lens carrier with a ground-glass screen frame capable of receiving a separate film cassette insertable thereat, and having a front lens carrier frame provided with a between-the-lens shutter containing electromagnetically driven shutter segments and diaphragm blades; an electronic control device which is connectable to the camera for controlling the electromagnetic operation of the shutter segments and diaphragm blades; and an adapter which is mechanically connectable directly or indirectly to the rear lens carrier or ground-glass screen frame and which is electrically connectable to the electronic control device, and which is capable of converting mechanical switching pulses received at the camera upon insertion of the film cassette thereat into electrical pulses for controlling the control device and in turn the operation of the shutter segments and diaphragm blades, whereby to provide an automatic cassette mechanism usable in a camera having an electromagnetically driven shutter and diaphragm mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.