Camera shutter system
US6418278B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 14, 2000 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Mar 14, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The camera of this invention includes an improved shutter system that has the same shutter waveform when a flash is employed and when a flash is not employed. In a preferred embodiment, the shutter system includes a shutter that is rotatably mounted to the camera and a shutter opening over which the shutter blade is disposed. A slidable plate in which a first aperture and a second aperture are disposed is coupled to the camera, so that the first aperture is disposed between the first shutter opening and the lens of the camera prior to taking a picture with the camera. The first aperture is preferably smaller than the second aperture. When a picture is taken, the shutter blade moves to uncover the shutter opening, and when the shutter opening is uncovered the shutter blade causes the slidable plate to slide with respect to the shutter opening so that the second larger aperture is disposed between the shutter opening and the camera lens. If a flash is used while taking a picture, the flash illuminates while the second aperture is disposed over the shutter opening. The shutter blade then returns to cover the shutter opening. As the shutter blade returns to cover the shutter opening, t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.