Exposure control system
US4420237A · kind A · utility
6Cited by
3References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1982 |
| Grant date | Dec 13, 1983 |
| Priority date | — |
| Expiry date | Dec 17, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/093
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera having an electromagnetically driven shutter provided with a counter capable upon counting a present number producing a signal. Each time the shutter is closed, the counted value is changed, while the period of actuation of the shutter is controlled to effect a predetermined fraction of an exposure, so that a continuous sequence of shots equal in number to that preset in the counter are taken automatically.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.