Focus adjustment device, focus adjustment method, and non-transitory storage medium for storing focus adjustment programs for performing focus adjustment in response to image signals of an image pickup device including focus detection pixels
US10484592B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2017 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Dec 28, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/76
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A focus detection section performs focus detection based on image signals of focus detection pixels of an image pickup device, included in the image signals acquired based on an exposure value for a live view display, calculates a gain correction value to correct the image signals of the focus detection pixels based on a result of the focus detection, and corrects image signals of focus detection pixels to be acquired by a next image pickup operation with the gain correction value to perform the focus detection. A control section causes the image pickup device to perform an AF image pickup operation using exposure value corrected based on the gain correction value, as an exposure value for the AF image pickup operation. The focus detection section performs focus detection based on the image signals of the focus detection pixels in accordance with the AF image pickup operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.