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US 10,948,346 B2Granted
Spectrometer, apparatus and method for measuring biometric information
AssigneeSamsung Electronics Co., Ltd.
InventorDong Ho Kim
Life of this patent
Estimating the term…
Abstract
A spectrometer according to one aspect may include a plurality of light sources configured to emit light to a target object, a plurality of wavelength controllers installed on one surface of each of the plurality of light sources and configured to adjust a peak wavelength band of each of the light sources, and a detection unit configured to detect light returning from the target object.
Claims17
A spectrometer comprising:
- a plurality of light sources configured to emit light toward a target object;
- a plurality of wavelength controllers disposed on surfaces of the plurality of light sources and configured to adjust peak wavelength bands of the plurality of light sources so that the peak wavelength bands of the plurality of light sources are different from each other;
- a detector disposed at a center of the plurality of light sources having a circular arrangement and configured to detect the light when the light is scattered or reflected from the target object;
- and
- a spectrometer controller configured to:
- perform a temperature-based wavelength adjustment by setting a temperature of each of the plurality of light sources, and perform a pulse-duration-based wavelength adjustment by setting a pulse duration of each of the plurality of light sources after performing the temperature-based wavelength adjustment, to adjust the peak wavelength bands of the plurality of light sources based on the temperature-based wavelength adjustment and the pulse-duration-based wavelength adjustment,
- sequentially turn on and off the plurality of light sources in an order of the circular arrangement of the plurality of light sources, so that a peak wavelength band of the light emitted from the plurality of light sources continuously changes over time while the detector is detecting the light, and
- reconstruct a spectrum based on the light that is emitted from the plurality of light sources and then is detected by the detector,
- wherein a matrix that represents a reference spectrum characteristic of an operating condition of each of the plurality of light sources is set based on the temperature-based wavelength adjustment and the pulse-duration-based wavelength adjustment.
6 more elements
An apparatus for measuring biometric information, the apparatus comprising:
- a main body;
- a light source unit disposed in the main body and comprising
- a plurality of light sources configured to emit light toward a target object, and
- a plurality of wavelength controllers disposed on the plurality of light sources and configured to adjust peak wavelength bands of the plurality of light sources so that the peak wavelength bands of the plurality of light sources are different from each other;
- a detector disposed at a center of the plurality of light sources having a circular arrangement and configured to detect the light when the light is scattered or reflected from the target object;
- and
- a spectrometer controller disposed in the main body and configured to:
- perform a temperature-based wavelength adjustment by setting a temperature of each of the plurality of light sources, and perform a pulse-duration-based wavelength adjustment by setting a pulse duration of each of the plurality of light sources after performing the temperature-based wavelength adjustment, to adjust the peak wavelength bands of the plurality of light sources based on the temperature-based wavelength adjustment and the pulse-duration-based wavelength adjustment, and
- sequentially turn on and turn off the plurality of light sources in an order of the circular arrangement of the plurality of light sources, so that a peak wavelength band of the light emitted from the plurality of light sources continuously changes over time while the detector is detecting the light, and to measure the biometric information of the target object based on the detected light, and
- reconstruct a spectrum based on the light that is emitted from the plurality of light sources and then is detected by the detector,
- wherein a matrix that represents a reference spectrum characteristic of an operating condition of each of the plurality of light sources is set based on the temperature-based wavelength adjustment and the pulse-duration-based wavelength adjustment.
8 more elements
A method of measuring biometric information, the method comprising:
- receiving a biometric information measurement command from a user;
- controlling a plurality of wavelength controllers corresponding to a plurality of light sources to adjust peak wavelengths of the plurality of light sources so that the peak wavelength bands of the plurality of light sources are different from each other;
- operating the plurality of light sources to emit light toward a target object;
- detecting the light when the light reflected or scattered from the target object using a detector that is disposed at a center of the plurality of light sources having a circular arrangement;
- and
- measuring biometric information of the target object based on the detected light,
- wherein the operating the plurality of light sources comprises:
- performing a temperature-based wavelength adjustment by setting a temperature of each of the plurality of light sources, and performing a pulse-duration-based wavelength adjustment by setting a pulse duration of each of the plurality of light sources after performing the temperature-based wavelength adjustment, to adjust the peak wavelength bands of the plurality of light sources based on the temperature-based wavelength adjustment and the pulse-duration-based wavelength adjustment, and
- sequentially turning on and off the plurality of light sources in an order of the circular arrangement of the plurality of light sources, so that a peak wavelength band of the light emitted from the plurality of light sources continuously changes over time while the detector is detecting the light, and
- reconstructing a spectrum based on the light that is emitted from the plurality of light sources and then is detected by the detector,
- wherein a matrix that represents a reference spectrum characteristic of an operating condition of each of the plurality of light sources is set based on the temperature-based wavelength adjustment and the pulse-duration-based wavelength adjustment.
8 more elements
A spectrometer comprising:
- a plurality of light sources configured to emit light toward a target object, each of the plurality of light sources comprising:
- a first surface at which the light is emitted toward the target object;
- and
- a second surface which is opposite to the first surface;
- a plurality of wavelength controllers disposed on second surfaces of the plurality of light sources and configured to adjust temperatures of the plurality of light sources so that peak wavelength bands of the plurality of light sources are different from each other, each of the plurality of wavelength controllers comprising a resistance heating element or a thermoelectric element;
- a photodiode detector disposed at a center of the plurality of light sources having a circular arrangement and configured to detect the light when the light is reflected or scattered from the target object;
- and
- a spectrometer controller configured to
- perform a temperature-based wavelength adjustment by setting a temperature of each of the plurality of light sources, and perform a pulse-duration-based wavelength adjustment by setting a pulse duration of each of the plurality of light sources after performing the temperature-based wavelength adjustment, to adjust the peak wavelength bands of the plurality of light sources based on the temperature-based wavelength adjustment and the pulse-duration-based wavelength adjustment, and
- sequentially turn on and off the plurality of light sources in an order of the circular arrangement of the plurality of light sources, so that a peak wavelength band of the light emitted from the plurality of light sources continuously changes over time while the detector is detecting the light, and
- reconstruct a spectrum based on the light that is emitted from the plurality of light sources and then is detected by the detector,
- wherein a matrix that represents a reference spectrum characteristic of an operating condition of each of the plurality of light sources is set based on the temperature-based wavelength adjustment and the pulse-duration-based wavelength adjustment.
9 more elements
Dependencies are inferred from the claim text.