System and method for solid state illumination for DMD devices
US5151718A · kind A · utility
106Cited by
2References
41Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 31, 1990 |
| Grant date | Sep 29, 1992 |
| Priority date | — |
| Expiry date | Dec 31, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/1238
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is disclosed an optic system for illuminating a DMD array in a xerographic printing process consisting of an array of LED emitters constructed to efficiently replace the conventional tungsten source used in prior art. The array can be geometrically configured or electrically operated by strobing or varying the brightness of individual pixels to compensate for other system optical deficiencies and results in improved printing process. By exposure strobing the LED source correction for fuzzy line edges can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.