Digital camera autofocus using eye focus measurement
US7298414B2 · kind B2 · utility
16Cited by
16References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2003 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Jun 11, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/671
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Viewfinder apparatus, methods, and digital cameras that provide autofocus using retroreflected eye focus measurements. When a user looks at a part of a scene that is the intended subject of the image, his or her eye is correctly focused. The present invention measures the focus distance of the eye when the eye is focused on the desired location in the scene, and then uses the measured distance to set the focus of the camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.