Automatic focusing apparatus for use in video camera and the like
US4842387A · kind A · utility
10Cited by
5References
11Claims
0Family size
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Inventors
Key dates
| Filing date | Feb 3, 1988 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | Feb 3, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/365
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An automatic focusing apparatus for use in a video camera and the like wherein one optical element other than a focusing lens means of an optical system is moved for focusing in the in-focus direction while being vibrated slightly by means of a motor capable of being driven by pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.