Living body measurement apparatus with waveguide light source and light extracting pattern
First Claim
1. A measurement apparatus for measuring a particular body composition of a living body that determines skin color and skin thickness to output a measurement of the particular body composition, said apparatus comprising:
- a first light source being arrangeable in use when substantially in contact with a first position of a skin surface of a living body and being configured to radiate a first light having a visible light wavelength range onto the skin surface;
a second light source being arrangeable in use when substantially in contact with a second position of the skin surface and being configured to radiate a second light in a near-infrared wavelength range onto the skin surface;
an optical detector being arrangeable in use when substantially in contact with the skin surface at a predetermined distance from the first and second light sources and being configured to detect the first and second lights being output from the skin and convert the detected first and second lights into electric signals; and
a controller configured for sequentially driving the first and second light sources and for determining skin color and skin thickness to output the particular composition of the living body based on a comparison of intensity values of lights detected and output by the optical detector with predetermined values in storage for a particular determined skin color and skin thickness;
a waveguide being arrangeable in use when substantially in contact with the skin, between the optical detector and the first and second light sources, the waveguide being configured to allow the first or second light inputted from one of the first and second light sources to travel around the optical detector with total reflection; and
at least one light extracting pattern being configured to extract the first or second light traveling with total internal reflection from the waveguide by scattering or reflecting the first or second light and being configured to radiate the first or second light onto the surface of the skin.
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Accused Products
Abstract
Disclosed is a living body measurement apparatus including: a first light source placed on the surface of the skin in a living body and radiating a first light in a visible light wavelength range onto the surface of the skin; a second light source placed on the surface of the skin and radiating a second light in a near-infrared wavelength range onto the surface of the skin; an optical detector placed on the surface of the skin at a predetermined distance from the first and second light sources to detect, as an electric signal, first or second detection light penetrating up through the skin and inputted thereto among the radiated first or second light; and a controller for sequentially driving the first and second light sources.
18 Citations
16 Claims
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1. A measurement apparatus for measuring a particular body composition of a living body that determines skin color and skin thickness to output a measurement of the particular body composition, said apparatus comprising:
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a first light source being arrangeable in use when substantially in contact with a first position of a skin surface of a living body and being configured to radiate a first light having a visible light wavelength range onto the skin surface; a second light source being arrangeable in use when substantially in contact with a second position of the skin surface and being configured to radiate a second light in a near-infrared wavelength range onto the skin surface; an optical detector being arrangeable in use when substantially in contact with the skin surface at a predetermined distance from the first and second light sources and being configured to detect the first and second lights being output from the skin and convert the detected first and second lights into electric signals; and a controller configured for sequentially driving the first and second light sources and for determining skin color and skin thickness to output the particular composition of the living body based on a comparison of intensity values of lights detected and output by the optical detector with predetermined values in storage for a particular determined skin color and skin thickness; a waveguide being arrangeable in use when substantially in contact with the skin, between the optical detector and the first and second light sources, the waveguide being configured to allow the first or second light inputted from one of the first and second light sources to travel around the optical detector with total reflection; and at least one light extracting pattern being configured to extract the first or second light traveling with total internal reflection from the waveguide by scattering or reflecting the first or second light and being configured to radiate the first or second light onto the surface of the skin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 13, 14, 15)
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9. A measurement apparatus comprising:
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a first light source being arrangeable in use when substantially in contact with a first position of a skin in a living body and being configured to radiate a first light having a first visible wavelength onto the surface of the skin; a second light source being arrangeable in use when substantially in contact with a second position of the skin and being configured to radiate a second light having a second wavelength of near-infrared light that is different from the first wavelength onto the surface of the skin; a third light source being arrangeable in use when substantially in contact with the skin at a location further away from an optical detector than the first and second light sources and being configured to radiate a third light onto the surface of the skin; an optical detector configured to detect each of the first light, second light, and third light output from the skin; and
convert said each of the detected first light, detected second light, and detected third light into electric signals;a controller configured to sequentially drive the first, second and third light sources and determine skin color and skin thickness to output a particular composition of a living body based on a comparison of intensity values of lights detected and output by the optical detector with predetermined values in storage for a particular determined skin color and skin thickness; a waveguide being arrangeable in use when substantially in contact with the skin between the first and second light sources and the third light source and being configured to allow the third light inputted from the third light source to travel around the optical detector with total internal reflection; and at least one light extracting pattern being configured to extract the third light traveling with total internal reflection from the waveguide by scattering or reflecting the third light and being configured to radiate the third light onto the surface of the skin. - View Dependent Claims (10, 11, 12, 16)
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Specification