Shutter-opening/closing and shutter-flash synchronization driver for dual-blade shutter in camera
US7178999B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 28, 2004 |
| Grant date | Feb 20, 2007 |
| Priority date | — |
| Expiry date | Mar 1, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B9/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A flash camera has a single-piece shutter-opening/closing and shutter-flash synchronization driver that translates in one direction to pivot a pair of shutter blades away from one another and simultaneously push a movable switch contact of a normally open shutter-flash synchronization switch to close the switch. Then, the movable switch contact is spring-urged to move the switch contact to reopen the shutter-flash synchronization switch and push the single-piece driver in a reverse direction to move the blades towards one another. Movement of the blades away from and towards one another uncovers and recovers an exposure aperture to take a picture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.