Autofocus using a holographic aperture element
US7016604B2 · kind B2 · utility
12Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2004 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Aug 28, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Autofocus methods and digital cameras employing a holographic element or hologram. The holographic element generates one or more displaced images that are processed to generate a bipolar contrast signal that provides for improved autofocus performance of the digital camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.