Finder visual field switching mechanism
US5652932A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1996 |
| Grant date | Jul 29, 1997 |
| Priority date | — |
| Expiry date | Aug 29, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B13/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
When a switching control on an outer wall of a camera is operated and stopped at a click groove corresponding to a desired aspect ratio (for example, C), a CHP lever moves up together with the switching control, and the displacement of the CHP lever is transmitted to an axis rotating lever via a spring. A rotational stroke of the axis rotating lever is smaller than a moving stroke of the CHP lever. A displacement of the CHP lever exceeding the rotational stroke of the axis rotating lever is absorbed by the deformation of the spring. The axis rotating lever is positioned steadily at one of ends of the stroke by the elastic force induced by the deformation of the spring. As a result, the ends of stroke holes in visual field frame pieces can abut against positioning pins without fail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.