Image pickup device and image pickup apparatus
US8098322B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2009 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Jul 23, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/702
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image pickup device includes a group of photoelectric conversion cells that output distance-measurement signals for phase difference detection. Each photoelectric conversion cell includes a photodetector and a pupil restricting unit. The photodetector generates the distance-measurement signal. The pupil restricting unit restricts a size of a pupil area, from which arrival light has exited, to a predetermined size in an exit pupil of a taking optical system, object light exiting from the exit pupil of the taking optical system, the arrival light arriving at the photodetector. The predetermined size is less than half a size of an entire area of the exit pupil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.