Phase-detect autofocus
US9973678B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2016 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Jan 14, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/704
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In various embodiments, methods, techniques, and related apparatuses for phase-detect autofocus devices are disclosed. In one embodiment, a phase-detect system includes a first color filter formed over a first pixel and a second pixel formed adjacent to the first pixel with a second color filter being formed over the second pixel. The second color filter has a color different from a color of the first color filter. A micro-lens spans the first pixel and the second pixel, configured to capture a phase difference in spatial frequency information present in an imaged scene. The first pixel and the second pixel are placed adjacent to each other in at least one of a horizontal direction, a vertical direction, and/or a diagonal direction, with an arrangement of the two pixels being replicated at either regular and/or irregular intervals across the sensor. Other methods and apparatuses are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.