Light sensor with intensity and direction detection
US8264678B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2008 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | May 8, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13318
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light sensor and light sensing system to detect an intensity of incident light and an angle of incidence of the incident light. The light sensor includes a dielectric layer, a plurality of photo detectors coupled relative to the dielectric layer, and a plurality of stacks of opaque slats embedded within the dielectric layer. The dielectric layer is substantially transparent to the incident light. The photo detectors detect the incident light through the dielectric layer. The stacks of opaque slats are approximately parallel to an interface between the dielectric layer and the photo detectors. The stacks of opaque slats define light apertures between adjacent stacks of opaque slats. At least some of the stacks of opaque slats are arranged at a non-zero angle relative to other stacks of the opaque slats.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.