Automatic focus adjusting system capable of adjusting focus of moving subject
US6311019A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 8, 2000 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Mar 8, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B13/36
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An automatic focus adjusting apparatus includes an image move-amount detecting section, an image position predicting section and a control section. The image move-amount detecting section detects, for each of a pair of images of a subject divided in a predetermined direction, image positions of the subject in an image-divided direction and in a direction approximately orthogonal with this image-divided direction respectively on photoelectric conversion elements at mutually different first and second times respectively, and obtains move amounts of the images of the subject in the image-divided direction based on a result of this detection. The image position predicting section predicts an image position of the subject in an image-divided direction at a third time different from the first and second times, based on an output from the image move-amount detecting section. The control section carries out a focus adjustment so that the image of the subject is in focus at the third time, based on an output from the image position predicting section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.