Variable-focus photographic camera
US5768636A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 15, 1997 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Jan 15, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A variable-focus photographic camera is described having a photographic lens adapted to be driven by an electric motor disposed at a location as remote as possible from the photographic lens so that a group of elements serving to transmit a driving force from a drive source to the photographic lens can be arranged substantially in a common plane and thereby a thickness or depth, as viewed in the direction of the optical axis of a space destined to be occupied by the above-mentioned group of elements, can be reduced. Such an arrangement also positively contributes to realization of a thin and compact camera. A dry battery and a main capacitor for powering a strobe device are disposed on the same lateral side of a camera body. The electric motor is disposed below on the dry battery and an output shaft of the electric motor is oriented in parallel to the optical axis of the photographic lens. Respective gears of a gear train arranged in a central zone of the camera body between the electric motor and the photographic lens, have their shafts extending in parallel to the optical axis. In this manner, the thickness or depth, as viewed in the direction of the optical axis of the space occ…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.