Automatic focus detection device for use in a camera
US4908649A · kind A · utility
23Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1988 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Dec 21, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a camera having an automatic focus detection device of active type, an auxiliary light source to project light to the object for the purpose of automatic focus detection is shared to a self-timer indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.