Fingerprint sensor device
US6128399A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 1997 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Nov 20, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1172
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The fingerprint sensor device comprises a thin flat transparent support (10) having an outside face for receiving the end of a finger and carrying on an inside face a two-dimensional matrix of photosensitive elements separated by strip-shaped gaps, and a substrate (14) carrying on an inside face light sources for directing light through the support via the strip-shaped gaps and substantially orthogonally to said outside face. The photosensitive elements are protected from the light coming from the sources so as to deliver an output signal only in response to light that has been back-scattered towards the outside face of the support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.