Automatic focusing device
US4860045A · kind A · utility
53Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1987 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | Aug 10, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/36
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An automatic focusing device for a camera is disclosed. The automatic focusing device has focus detection means for detecting defocus amount of the image, object movement detection means for detecting movement of the object based on defocus data detected by the focus detection means and correction means for correcting the detected defocus amount according to the detected movement of the object. The objective lens of the camera is driven according to the corrected defocus amount for focus adjustment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.