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

Claim 18:
19. A device, comprising:
a flexible band 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 band, wherein:
the light source emits light to interrogate the wrist, the dermal layer, or the blood vessel;
the light comprising 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 band to emit, as the user wears the band, the light towards the body part;

an optical sensor integrated into the band and positioned in the band to receive the constituent wavelength, wherein the optical sensor is positioned in the band to receive, as the user wears the band, the constituent wavelength through the wrist, the dermal layer, the blood vessel, or the material in the blood vessel;
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; and
a glass substrate substantially transparent to the constituent wavelength integrated into the band and oriented in the band to receive the light through the body part as the user wears the band, the glass substrate comprising:
a patterned thin film layer of iron patterned on the glass substrate and adhered to the glass substrate;
a grid structure etched into the glass substrate; and
carbon nanotubes disposed in the grid structure forming walls of the grid structure, wherein:
the grid structure etched into the glass substrate and the patterned thin film layer of iron form a basis for the carbon nanotube grid structure; and
the carbon nanotube grid structure is grown on the patterned thin film layer of iron.