Light-emitting diode (LED) illumination system for a digital micro-mirror device (DMD) and method of providing same
US7325956B2 · kind B2 · utility
79Cited by
10References
26Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 22, 2005 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Oct 30, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light illumination system for projecting a color image to a digital micro-mirror display (DMD) panel includes a light-emitting diode (LED) illumination assembly (101, 102, 103), a dichroic combiner (107) for providing a single light source and a condenser lens system (FIGS. 20-23) for directing light from the single light source to the DMD panel. The invention provides a cost effective and efficient system for providing a non-polarized uniform light source to a DMD panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.