Non-contact shutter activation system and method
US7513702B2 · kind B2 · utility
2Cited by
13References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2005 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | May 23, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B9/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A shutter operating system is provided that depends on electromagnetic energy to operate shutter blades. A permanent magnet and solenoid system operate the shutter blades. Movement of the magnet causes the shutter blades to move between an open and a closed position over a lens. The permanent magnet can be moved between a pair of spaced coils by selectively energizing first one coil then the other. The magnet can be attached directly to a shutter blade or in the case of a rotary shutter, the magnet can be attached to a drive ring that in turn is mechanically coupled to the shutter blades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.