Antibounce device for electromagnetically driven shutter
US4302090A · kind A · utility
6Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1980 |
| Grant date | Nov 24, 1981 |
| Priority date | — |
| Expiry date | Mar 26, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B9/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An antibounce device for an electromagnetically driven shutter of a camera in which a braking current flowing in the direction reverse to the direction of a driving current is supplied to a shutter blade driving coil for a predetermined period of time immediately before completion of the travel of shutter blades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.