Focus detection apparatus
US8442396B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 6, 2011 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Jan 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/44
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A focus detection apparatus comprising a focus detection sensor formed by arranging a plurality of pairs of line sensors, each pair of line sensors receiving light beams that have passed through different pupil areas of an imaging lens configured to form an object image, a sensitivity setting unit configured to set a sensitivity for each pair of the plurality of pairs of line sensors, a selection unit configured to select line sensors of the pair of line sensors, whose signals are to be used for focus detection calculation, and a calculation unit configured to perform the focus detection calculation using the signals of the line sensors selected by the selection unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.