Image frame changing apparatus for camera
US6477333B1 · kind B1 · utility
7Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2000 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Sep 29, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B1/50
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A view frame changing apparatus of the present invention is constructed in which cam grooves formed at view frame pieces are arched by the predetermined curvature; thus the cam pins can smoothly slide over the entire area of the sliding area of the cam grooves without being caught in the cam grooves. Moreover, the cam grooves are formed in areas of acute angles in between the two diagonal lines of the image frame; therefore, the frame changing apparatus can be compact in size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.