System and method for use in photoplethysmography
US11737677B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2019 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Aug 24, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/02416
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for use in monitoring application is described. The system comprises a light detection unit and an illumination arrangement. The detection unit is configured for collecting light returning from a selected inspection region for determining variations in collected light intensity. The illumination arrangement comprises one or more light sources configured for providing illumination of a selected wavelength range directed toward said inspection region. Wherein the illumination arrangement is arranged around the detection unit to provide symmetrical illumination conditions with respect to an axis connecting said detection unit and said inspection region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.