High-contrast display system with scanned conformal grating device
US6678085B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2002 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Jun 12, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/0808
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved projection system that includes a conformal grating electromechanical system (GEMS) device for forming an image on a medium, and also including: a light source providing illumination; a linear array of conformal GEMS devices receiving the illumination; an obstructing element for blocking a zeroth order reflected light beam from reaching the medium; a cross-order filter placed substantially near a Fourier plane of a lens system for blocking a plurality of diffracted cross-order light beams from reaching the medium; a scanning element for moving non-obstructed diffracted light beams relative to the medium; and a controller for providing a data stream to the linear array of conformal GEMS devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.