Lens-fitted photo film unit
US6816672B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2003 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Aug 15, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An operation member is moved from a first position to a third position via a second position. When the operation member is rotated from the second position to the third position, a plate portion integrally formed with the operation member pushes and rotates a changeover ring to rotate a stop changing plate and a shutter-speed changing plate. When the operation member is kept in the second position, the plate portion is not interlocked with the changeover ring. Thus, a stop and a shutter speed are not carelessly changed if the operation member is slightly rotated by a finger. Since the stop changing plate starts to rotate at a near portion of a rotational end of the changeover ring, the stop is substantially maintained in a smaller-stop state or in a larger-stop state even if the operation member stops on its way.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.