Multi-depth-of-field light-sensing device, and system and method for use thereof having plural light-sensing pixel layers sense light signals with different wavelength bands from different distances
US9369641B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 2011 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Nov 25, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/813
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a multi-depth-of-field light-sensing device, a system, a depth of field extension method, and an optical imaging system. The multi-depth-of-field light-sensing device includes at least two light-sensing pixel layers capable of inducing a light source, where the at least two light-sensing pixel layers are arranged at an interval of a preset distance, so that different light signals from a lens at a specific distance from the light-sensing device are focused to the different light-sensing pixel layers. The multi-depth-of-field light-sensing device of the present invention can implement automatic focusing without using any electrically operated mechanism or complex and precise mechanical component, and have good depth of field extension performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.