Direction active projection
US9218755B2 · kind B2 · utility
2Cited by
5References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2013 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Feb 6, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F13/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A directionally active projection device is described that includes a planar display providing a pattern of information. The planar display includes regions of light transparency and regions for blocking light transmittance. The directionally active projection device also includes a lens arranged adjacent to the planar display, and a collection of light sources arranged as an array in a focal plane of the lens. Also described are methods of controlling directionally active projection devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.