Interactive display system having a digital micromirror imaging device
US7025461B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2003 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Oct 29, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/47
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display system includes a waveguide optical panel having an inlet face and an opposite outlet face. A projector cooperates with a digital imaging device, e.g. a digital micromirror imaging device, for projecting an image through the panel for display on the outlet face. The imaging device includes an array of mirrors tiltable between opposite display and divert positions. The display positions reflect an image light beam from the projector through the panel for display on the outlet face. The divert positions divert the image light beam away from the panel, and are additionally used for reflecting a probe light beam through the panel toward the outlet face. Covering a spot on the panel, e.g. with a finger, reflects the probe light beam back through the panel toward the inlet face for detection thereat and providing interactive capability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.