Patent · US Active

Optical sensor

US10256220B2 · kind B2 · utility

0Cited by

1References

14Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

David O'Brien · Portland, US
Tim Böscke · Regensburg, DE
Sebastian Pielnhofer · Starnberg, DE

Key dates

Filing date	Oct 21, 2016
Grant date	Apr 9, 2019
Priority date	—
Expiry date	Oct 21, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/851
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

An optical sensor that captures a heart rate and/or a blood oxygen content includes a light source including a light emitter that emits electromagnetic radiation with a first wavelength range including green light, a second wavelength range including red light and a third wavelength range including infrared radiation, and three light detectors, each including a filter for electromagnetic radiation, wherein a first filter is transmissive for light of the first wavelength range and non-transmissive for light of the second wavelength range and the infrared radiation of the third wavelength range, a second filter is transmissive for light of the second wavelength range and non-transmissive for light of the first wavelength range and the infrared radiation of the third wavelength range and a third filter is transmissive for the infrared radiation of the third wavelength range and non-transmissive for light of the first and the second wavelength range.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.