Multi-color illumination device in fingerprint imaging system with microprism diffuser
US7455424B2 · kind B2 · utility
5Cited by
13References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2007 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Jan 25, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for optically imaging an object includes an optical platen having an object receiving surface. The object receiving surface is illuminated by a multi-color light source, and a color imaging system forms an image of the object on the object receiving surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.