Light emitter and sensors for detecting biologic characteristics
US10931859B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2017 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Oct 28, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/15
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A bio-sensor device includes a surface for touching by a body part, such as a finger. A light source, such as an array of LEDs, emit light through the surface so as to be reflected and partially absorbed by the body part An array of photodetectors detects light reflected back by the body part and generates signals corresponding to an image of the light reflection, which corresponds to the light absorption pattern in the body part. The light absorption pattern may correlate to a fingerprint, a blood vessel pattern, blood movement within the blood vessels, or other biometric feature. A processor receives the signals from the photodetectors and analyzes the signals to determine a characteristic of the body part. The characteristic may be used to authenticate the user of the bio-sensor device by comparing the detected characteristic to a stored characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.