Shutter device for camera
US4657366A · kind A · utility
15Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1986 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Apr 23, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B9/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A focal plane shutter for camera comprises an opening blade group and a closing blade group, an opening blade-driving member and a closing blade-driving member, an exposure operation means for moving said blade-driving members for exposure operation, a braking member for changing the position from an initial position while absorbing the kinetic energy of the moving closing blade-driving member and resetting means for moving the blade-driving members and the braking member after completing the exposure operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.