Biometric device
US10613256B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2017 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Jul 8, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1341
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A biometric device includes an illuminating unit and an imaging module. The imaging module includes an optical angular selective structure and a sensing layer. The light selecting structure includes a micro lens array, a refractive layer and a light shielding layer. The refractive layer is disposed between the micro lens array and the light shielding layer. The micro lens array includes a plurality of lens unit units, and the light shielding layer has a plurality of light passing portions. The sensing layer defines multiple sensing regions which are spaced apart from each other. The light shielding layer is disposed between the refractive layer and the sensing layer. The sensing regions correspond to the light passing portions, respectively. An optical angular selective distance is defined between the light shielding layer and the sensing layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.