Camera and autofocus apparatus
US6363220B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 2000 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Mar 16, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B13/36
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A low-cost and space-saving focus adjusting apparatus which accurately performs focus adjustment by correcting chromatic aberration in focus detecting operation. A digital camera including a photographing lens and a color imaging element, according to the present invention, comprises a focus detecting light-receiving sensor for receiving an object light beam passed through the photographing lens, a correcting section for calculating, based on an output from the color imaging element, a correction value for correcting a detection error due to chromatic aberration of the focus detecting light-receiving sensor, a focus detecting section for detecting a focus adjusting state of the photographing lens based on an output from the focus detecting light-receiving sensor, and a control section for driving the photographing lens based on an output from the focus detecting section and an output from the correcting section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.