Camera with indicator to warn of unintended shutter opening such as when camera dropped or jarred
US6067423A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1999 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | Mar 12, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera comprising an aperture through which ambient light is passed to cause a film exposure, at least one shutter blade supported for opening movement to uncover the aperture to permit ambient light to pass through the aperture and for closing movement to re-cover the aperture and susceptible of being moved open accidentally such as when the camera is dropped or jarred, and a shutter release button manually depressible to initiate opening movement of the shutter blade, is characterized in that an indicator is activatable to provide a warning the shutter blade has been moved open without the shutter release button having been manually depressed, whereby the warning indicates the shutter blade has been moved open accidentally such as when the camera is dropped or jarred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.