Patent ID: 11877845
Assignee: BRIGHAM YOUNG UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC A  G | IPC A  G

Claim 0:
1. A device, comprising:
a flexible hand designed to flex into a curvilinear shape, the flexible band comprising a shape, size, and flexibility designed for attaching the flexible band to a wrist of a user, the wrist comprising a dermal layer along an underside of the wrist and a blood vessel within the wrist adjacent to the dermal layer along the underside of the wrist;
a light source embedded in the flexible band, wherein:
the light source emits light to interrogate the wrist, the dermal layer, or the blood vessel;
the light comprises a constituent wavelength, wherein the constituent wavelength provides an indication of a state, condition, or constituent of the blood vessel or material in the blood vessel by reflection from or transmission through the blood vessel or the material in the blood vessel; and
the light source is positioned in the flexible band to emit, as the user wears the flexible band, the light towards the wrist;

an optical filter integrated into the flexible band, and oriented in the flexible band to isolate the constituent wavelength, wherein the optical filter comprises a passband to isolate the constituent wavelength from other wavelengths of the light;
an optical sensor integrated into the flexible band and positioned in the flexible band to receive the constituent wavelength, wherein the optical sensor is positioned in the flexible band to receive, as the user wears the hand, the constituent wavelength through the wrist, the dermal layer, the blood vessel, or the material in the blood vessel;
a collimator integrated into the flexible band, the collimator comprising:
a glass substrate substantially transparent to the constituent wavelength;
a patterned thin film layer of iron patterned on the glass substrate and adhered to the glass substrate; and
a carbon nanotube grid structure coupled to the glass substrate, wherein:
the patterned thin film layer of iron forms a basis for the carbon nanotube grid structure; and
the carbon nanotube grid structure is grown on the patterned thin film layer of iron, wherein the collimator is positioned in the flexible band to collimate the light before the light is received by the optical sensor.