Biometric imaging device and method for manufacturing a biometric imaging device
US11308729B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2019 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Mar 5, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/03547
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A biometric imaging device configured to capture an image of an object in contact with an outer surface of the imaging device, comprising: an at least partially transparent display panel comprising a repeating transmission pattern defined by an array of display unit cells, each display unit cell having the same transmission pattern; an image sensor comprising a photodetector pixel array arranged underneath the display panel; and a collimator layer arranged between the display panel and the image sensor that comprises a plurality of first collimating structures having a first collimator opening size and a plurality of second collimating structures having a second collimator opening size different from the first collimator opening size, wherein the respective collimator opening size and relative location of the first and second collimating structure in relation to the display unit cell is based on the transmission pattern of the display unit cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.