Electric shutter for camera
US4332452A · kind A · utility
6Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1980 |
| Grant date | Jun 1, 1982 |
| Priority date | — |
| Expiry date | Dec 11, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B9/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electric shutter for camera is operable selectively with manual control mode in which the shutter time is set manually or with automatic exposure control mode in which a proper shutter time is set automatically. The preciseness of shutter time is improved by using one and single control cam in manual control mode as well as in automatic control mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.