Finger sensor using optical dispersion sensing and associated methods
US7671351B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2004 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Jun 5, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1394
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical dispersion finger sensor includes an integrated circuit substrate, and an optical source for directing light into a user's finger when positioned adjacent the integrated circuit substrate. The light may propagate into and be dispersed by the user's finger so that at least a portion of the dispersed light exits the user's finger in a direction toward the integrated circuit substrate. The sensor may also include at least one optical dispersion sensing pixel on the integrated circuit substrate for sensing dispersed light from the user's finger. A processor may be connected to the optical dispersion sensing pixels for generating optical dispersion biometric data based upon dispersed light from the user's finger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.