Variable focus lens device in camera
US5819120A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1996 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Nov 29, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An initial position of a variable focus lens is set substantially halfway between a wide and a telephotographing end. Thus, just after the initial position is set by turning on a power switch, both the wide photographing and the telephotographing can be performed quickly. The instantaneous change of a moving object can be quickly photographed in a desired visual field. In the present invention, a composition at the initial position which is set by turning on the power switch is not so different from a composition at the wide photographing side or the telephotographing side. Therefore the user is not confused by any composition during photographing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.