Patent ID: 11903700
Assignee: RDS
Field: Medical technology (Instruments)
Classification: CPC A  H | IPC A  H

Claim 9:
10. A device for health monitoring comprising:
a photoplethysmography (PPG) unit comprising:
a barrier wall frame;
a light sensor;
a plurality of light sources providing at least two discrete wavelengths of light;
an encapsulant;

the barrier wall frame providing structure to support the light sensor and the plurality of light sources, and the encapsulant;
the barrier wall frame providing a barrier wall disposed between the light sensor and the plurality of light sources; and,
the plurality of light sources arrayed in at least two discrete concentric arrays relative to each other;
the at least two discrete concentric arrays defining at least one interior array and at least one exterior array;
the at least two discrete wavelengths of light being disposed each discretely on a discrete one of the at least two discrete concentric arrays;
the at least two discrete wavelengths of light being disposed each on a discrete one of the interior and exterior arrays;
the exterior array having a discrete wavelength of light from that of the interior array.