Fault tolerant projective display having redundant light modulators
US5815303A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1997 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Jun 26, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projective display system includes a light source, a display surface, and a two dimensional light modulator array in an optical path between the light source and the display surface. The two dimensional light modulator array has a plurality of light modulators arranged in rows to modulate light from the light source, with at least one row being susceptible to failure. To compensate for any failed rows, a redundant light modulator array is provided, with modulated light output of the redundant light modulator array being directed by an optical element positioned to selectively substitute for at least one failed row of light modulators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.