Zoom camera with automatic power-shutoff function and the automatic power-shutoff method thereof
US6430369B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2001 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Mar 23, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a zoom camera with an automatic power-shutoff function, that includes a motor including a zoom motor, a focal-distance-recognizing unit for outputting a signal corresponding to a focal distance, and a controller for positioning a body tube in a wide-angle position in the case when the camera has not operated during a first stop-time period and shuts off power if the camera has not operated during a second stop-time period, wherein it becomes possible to protect the body tube from an external impact by positioning the body tube in the wide-angle position during the first stop-time period and to take a photograph instantly when he sees a subject by eliminating the time required for turning the power on again.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.