Optical fingerprint sensor
US10515253B2 · kind B2 · utility
3Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2017 |
| Grant date | Dec 24, 2019 |
| Priority date | — |
| Expiry date | Mar 14, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1359
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical fingerprint sensor, includes: an image sensor array; a collimator layer disposed above the image sensor array, the collimator array having an array of first apertures; a light guiding layer disposed on the collimator layer; a light source emitting light into the light guiding layer; and a sensing area disposed above the light guiding layer. The light guiding layer allows a portion of the light from the light source to enter to the sensing area while directing the remaining portion of the light forward.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.