Wearable device and method for measuring ultra-violet light with visible light sensor
AssigneeL'oreal
InventorDavid B. Kosecoff
Life of this patent
Estimating the term…
Abstract
A wearable UV sensor includes a UV pass filter; a UV phosphor material; and a visible light sensing device, wherein the UV sensor is configured to receive light including visible light and UV light, wherein the UV pass filter directs the UV light to the UV phosphor material and the UV phosphor material fluoresces visible light in proportion to the UV light from the UV pass filter, and the visible light sensing device measures the visible light fluorescing from the UV phosphor material to determine the amount of the UV light entering the sensor, which correlates to the UV exposure of a subject wearing the UV sensor.
Claims17
A UV sensor, comprising:
- a UV pass filter;
- a UV phosphor material;
- and
- a visible light sensing device, wherein the UV sensor is configured to receive light including visible light and UV light, wherein the UV pass filter directs the UV light to the UV phosphor material and the UV phosphor material fluoresces visible light in proportion to the UV light from the UV pass filter, and the visible light sensing device measures the visible light fluorescing from the UV phosphor material to determine an amount of the UV light entering the UV sensor.
A wearable sensor, comprising:
- an ultraviolet verification unit coupled to one or more optical sensors and an ultraviolet phosphor element configured to fluoresce in the visible light spectrum responsive to an interrogation by an ultraviolet stimulus;
- wherein the wearable sensor includes at least one ultraviolet pass filter assembly configured to block the visible portion of an impinging optical radiation stimulus, pass the ultraviolet portion of the impinging optical radiation stimulus onto the ultraviolet phosphor element;
- and
- wherein the ultraviolet verification unit includes processing circuitry configured to generate one or more instances of an ultraviolet exposure level based on a portion of a detected fluorescent response of the ultraviolet phosphor element that ranges from 400 nanometers to 700 nanometers.
Dependencies are inferred from the claim text.