Automatic focusing camera provided with an auxiliary light emitter
US5687402A · kind A · utility
10Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1995 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Dec 21, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An automatic focusing camera has a selective night view mode of photographing a scene where the brightness of a main object is lower than the brightness of a background and the brightness of the whole scene is lower than a specified value, and includes an auxiliary light emitter operable to emit an auxiliary light to the main object for focusing; a first determinator operable to determine whether an auxiliary light is necessary in the night view mode; and a controller in responsive to the first determinator to render the auxiliary light emitter emit an auxiliary light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.