Zooming device
US4445757A · kind A · utility
58Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1982 |
| Grant date | May 1, 1984 |
| Priority date | — |
| Expiry date | Sep 23, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A zooming device for a camera, which comprises a rocker which operates a plurality of successively operable switches provided on each side of the center of rotation. The rocker can be turned in either direction to operate the first one of the plurality of switches so as to obtain zooming by a corresponding multiple lens group in the corresponding direction and at a predetermined speed. The zooming speed can be changed to a next speed when a second one of the switches is operated by further turning of the rocker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.