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US 11,439,328 B2Granted
Optical sensor, and apparatus and method for estimating bio-information
AssigneeSamsung Electronics Co., Ltd.
InventorMoonseong Park
Life of this patent
Estimating the term…
Abstract
An optical sensor according to an example embodiment includes: a light source part configured to emit light onto an object; a signal separator configured to separate optical signals, returning from the object, into a fluorescence signal and a non-fluorescence signal; a first photodetector part configured to detect the non-fluorescence signal; and a second photodetector part configured to detect the fluorescence signal.
Claims17
An optical sensor comprising:
- a light source part provided on a substrate extending in a first direction, and configured to emit light onto an object toward a second direction, the second direction crossing the first direction;
- a signal separator configured to separate optical signals, returning from the object, into a fluorescence signal and a non-fluorescence signal;
- a wall provided on the substrate, the wall being positioned between the light source part and the signal separator and extending in the second direction;
- a first photodetector part configured to detect the non-fluorescence signal;
- and
- a second photodetector part configured to detect the fluorescence signal,
- wherein the signal separator comprises a dichroic filter configured to reflect an optical signal having a wavelength greater than a second wavelength and pass an optical signal having a wavelength less than the second wavelength, among the optical signals returning from the object,
- wherein the first photodetector part comprises at least one first photodetector configured to detect the optical signal, that is passed through the dichroic filter, as the non-fluorescence signal, the at least one first photodetector being a horizontal photodetector and extending in the first direction, the horizontal photodetector being provided on the substrate and contacting the wall,
- wherein the second photodetector part comprises at least one second photodetector configured to detect the optical signal, that is reflected from the dichroic filter, as the fluorescence signal, the at least one second photodetector being a vertical photodetector and extending in the second direction, and
- wherein the signal separator further comprises a support configured to support the dichroic filter, the support being positioned between the dichroic filter and the wall and positioned on the horizontal photodetector.
7 more elements
An apparatus for estimating bio-information, the apparatus comprising:
- an optical sensor configured to emit, by using a light source part provided on a substrate extending in a first direction, light onto an object toward a second direction, the second direction crossing the first direction;
- configured to separate, by using a signal separator, optical signals, which return from the object, into a fluorescence signal and a non-fluorescence signal;
- and configured to separately detect the non-fluorescence signal and the fluorescence signal;
- and
- a processor configured to estimate at least one of a concentration or an amount of a first analyte in the object by analyzing the detected non-fluorescence signal, and estimate at least one of a concentration or an amount of a second analyte in the object by analyzing the detected fluorescence signal,
- wherein the signal separator comprises a dichroic filter configured to reflect an optical signal having a wavelength greater than a predetermined wavelength and pass an optical signal having a wavelength less than the predetermined wavelength, among the optical signals returning from the object,
- wherein the optical sensor comprises:
- a wall provided on the substrate, the wall being positioned between the light source part and the signal separator and extending in the second direction;
- at least one first photodetector configured to detect the optical signal, that is passed through the dichroic filter, as the non-fluorescence signal, the at least one first photodetector being a horizontal photodetector and extending in the first direction, the horizontal photodetector being provided on the substrate and contacting the wall;
- and
- at least one second photodetector configured to detect the optical signal, that is reflected from the dichroic filter, as the fluorescence signal, the at least one second photodetector being a vertical photodetector and extending in the second direction, and
- wherein the signal separator further comprises a support configured to support the dichroic filter, the support being positioned between the dichroic filter and the wall and positioned on the horizontal photodetector.
9 more elements
A method of estimating bio-information, the method comprising:
- emitting, by using a light source part provided on a substrate extending in a first direction, light onto an object toward a second direction, the second direction crossing the first direction;
- separating, by using a signal separator, optical signals, returning from the object, into a fluorescence signal and a non-fluorescence signal;
- detecting, by using at least one first photodetector, the non-fluorescence signal;
- detecting, by using at least one second photodetector, the fluorescence signal;
- estimating at least one of a concentration or an amount of a first analyte in the object by analyzing the detected non-fluorescence signal;
- and
- estimating at least one of a concentration or an amount of a second analyte in the object by analyzing the detected fluorescence signal,
- wherein the separating comprises reflecting, by using a dichroic filter, an optical signal having a wavelength greater than a predetermined wavelength and passing an optical signal having a wavelength less than the predetermined wavelength, among the optical signals returning from the object,
- wherein the detecting the non-fluorescence signal comprises detecting, by using the at least one first photodetector, the optical signal, that is passed through the dichroic filter, as the non-fluorescence signal, the at least one first photodetector being a horizontal photodetector and extending in the first direction,
- wherein the detecting the fluorescence signal comprises detecting, by using the at least one second photodetector, the optical signal, that is reflected from the dichroic filter, as the fluorescence signal, the at least one second photodetector being a vertical photodetector and extending in the second direction,
- wherein a wall is provided on the substrate, the wall being positioned between the light source part and the signal separator and extending in the second direction, and the horizontal photodetector is provided on the substrate and contacting the wall, and
- wherein the signal separator further comprises a support configured to support the dichroic filter, the support being positioned between the dichroic filter and the wall and positioned on the horizontal photodetector.
9 more elements
Dependencies are inferred from the claim text.