Color spatial light modulator and color printer using the same
US5933183A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1996 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Dec 11, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/504
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color spatial light modulator has red, green, and blue micromirror arrays juxtaposed in parallel. Each micromirror array has a number of micromirrors each formed with a filter for reflecting specific color light. As data "1" is written to a memory cell of an SRAM, the micromirror tilts by +.theta. and enters a valid reflection state in which spot light is utilized. As data "0" is written, the micromirror tilts by -.theta. and enters an invalid reflection state in which spot light is not utilized. A data write control circuit converts image data into mirror drive data and writes it to SRAM. Three-color parallel line light beams generated by the three-color micromirror arrays are projected by a projector lent onto color paper. A three-color image is printed line sequentially on the color paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.