Gray scale printing using spatial light modulators
US5461410A · kind A · utility
85Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1993 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Mar 29, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40031
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for gray scale printing combining row integration and pulse width modulation. A spatial light modulator (102) has one line (104) designated to perform PWM within a given line time. Another area of the modulator (106) has lines designated to perform row integration on the print image, allowing for more gray levels. An additional area (108) can be designated to correct for defects in the illumination profile and the printed images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.