Substrate for fingerprint contact
US8649001B2 · kind B2 · utility
17Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2012 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | May 11, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1324
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A substrate for fingerprint contact includes a plate, and the plate includes a first surface and a second surface. The first surface is an optical diffusing surface. The optical diffusing surface is used for being contacted by a finger, and features hazed particles. The second surface faces an optical imaging system. The optical diffusing surface of the plate helps to enhance light to be evenly emitted to the finger and weakens the unnecessary scattered light to the optical imaging system, so as to enhance the recognition rate of a fingerprint when the optical imaging system is used for intercept the light applied on a finger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.