Illuminator with light source arrays
US6191872A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1997 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Nov 26, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/48
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An illuminator and a scanner incorporating such an illuminator. In one embodiment, the illuminator has a plurality of arrays of semiconductor light emitting elements, each array having a different integrated spectral output, and a plurality of respective different interference filters each positioned between a corresponding array and the media holder. A media holder holds a media carrying an image for scanning, the media holder being positioned to receive filtered light from the illuminator. A sensor is positioned to receive light from the media holder so as to generate an image signal corresponding to an image on a media positioned at the media holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.