Camera with changeable focal length
US4961084A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 6, 1989 |
| Grant date | Oct 2, 1990 |
| Priority date | — |
| Expiry date | Sep 6, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B19/07
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A focal length changeable camera has a taking lens system which is changed between at least two different focal lengths, namely, a relatively long focal length suitable for a telephotographic mode and a relatively short focal length suitable for a wide-angle photographic mode, and is equipped with a focal length changing mechanism comprising a rotatable changing member driven by a motor, a lever displacing member provided on the rotatable changing member, a motor switching lever engageable with the lever displacing member for switching a motor switch, and a focal length changing member for changing the focal length of the taking lens upon rotation of the rotatable changing member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.