Living body information measuring apparatus living body information measuring method body fat measuring apparatus body fat measuring method and program recording medium
First Claim
Patent Images
1. A body fat measuring apparatus comprising:
- a light emitting portion for projecting light rays to a subject'"'"'s tissue;
a light receiving portion for detecting, of the light rays, at least one of a transmitted light ray having passed through the subject'"'"'s tissue and a reflected light ray reflected inside the subject'"'"'s body;
signal processing operation means for calculating at least one of the subject'"'"'s subcutaneous fat thickness and body fat percentage by performing an operation by use of a detection result of the light receiving portion, wherein either the number of light emitting portions or the number of light receiving portions is at least two and wherein the at least two light emitting portions or light receiving portions are situated at different distances from corresponding light receiving portions or light emitting portions;
wherein the light receiving portion includes a first light receiving portion situated at a predetermined distance from the light emitting portion, and a second light receiving portion situated farther away from the light emitting portion than the first light receiving portion, wherein the first light receiving portion detects the transmitted light ray and the reflected light ray having arrived by way of the subject'"'"'s skin or skin and a layer in the vicinity thereof, wherein the second light receiving portion detects the transmitted light ray and the reflected light ray having arrived by way of the subject'"'"'s skin and subcutaneous layer, wherein the signal processing operation means corrects a detection result of the second light receiving portion by a detection result of the first light receiving portion and performs an operation by use of a result of the correction to thereby calculate the subject'"'"'s subcutaneous fat thickness or body fat percentage, wherein the correction performed by the signal processing operation means is to divide the detection result of the second light receiving portion by the detection result of the first light receiving portion, wherein the signal processing operation means analyzes all or some of light components of wavelengths of substantially 600 to 660 nm, and wherein the distance between the first light receiving portion and the second light receiving portion is at least 2mm.
3 Assignments
0 Petitions
Accused Products
Abstract
A body fat measuring apparatus is provided with a light emitting device 1 for projecting light rays to a subject'"'"'s tissue, light receiving devices 3 and 4 for detecting a transmitted light ray having passed through the subject'"'"'s tissue and/or a reflected light ray reflected inside the subject'"'"'s body, and a CPU 6 for calculating the subject'"'"'s subcutaneous fat thickness and/or body fat percentage by performing an operation by use of the detection results of the light receiving devices 3 and 4. The light receiving devices 3 and 4 are situated at different distances from the light emitting device 1.
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Citations
33 Claims
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1. A body fat measuring apparatus comprising:
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a light emitting portion for projecting light rays to a subject'"'"'s tissue;
a light receiving portion for detecting, of the light rays, at least one of a transmitted light ray having passed through the subject'"'"'s tissue and a reflected light ray reflected inside the subject'"'"'s body;
signal processing operation means for calculating at least one of the subject'"'"'s subcutaneous fat thickness and body fat percentage by performing an operation by use of a detection result of the light receiving portion, wherein either the number of light emitting portions or the number of light receiving portions is at least two and wherein the at least two light emitting portions or light receiving portions are situated at different distances from corresponding light receiving portions or light emitting portions;
wherein the light receiving portion includes a first light receiving portion situated at a predetermined distance from the light emitting portion, and a second light receiving portion situated farther away from the light emitting portion than the first light receiving portion, wherein the first light receiving portion detects the transmitted light ray and the reflected light ray having arrived by way of the subject'"'"'s skin or skin and a layer in the vicinity thereof, wherein the second light receiving portion detects the transmitted light ray and the reflected light ray having arrived by way of the subject'"'"'s skin and subcutaneous layer, wherein the signal processing operation means corrects a detection result of the second light receiving portion by a detection result of the first light receiving portion and performs an operation by use of a result of the correction to thereby calculate the subject'"'"'s subcutaneous fat thickness or body fat percentage, wherein the correction performed by the signal processing operation means is to divide the detection result of the second light receiving portion by the detection result of the first light receiving portion, wherein the signal processing operation means analyzes all or some of light components of wavelengths of substantially 600 to 660 nm, and wherein the distance between the first light receiving portion and the second light receiving portion is at least 2mm. - View Dependent Claims (7, 8, 9, 10, 11, 18)
projecting light rays to the subject by the light emitting portion;
detecting at least one of a transmitted light ray and a reflected light ray having arrived by way of the subject'"'"'s skin or skin and a layer in the vicinity thereof by the first light receiving portion;
detecting at least one of a transmitted light ray and a reflected light ray having arrived by way of the subject'"'"'s skin and subcutaneous fat layer and by the second light receiving portion; and
calculating the subject'"'"'s subcutaneous fat thickness or body fat percentage by the signal processing operation means by correcting a detection result of the second light receiving portion by a detection result of the first light receiving portion and performing an operation by use of a result of the correction.
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8. A program recording medium being readable by a computer and recording therein a program and data for causing a computer to perform operations of steps of a body fat measuring method according to claim 7.
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9. A body fat measuring apparatus according to claim 1,
wherein the signal processing operation means analyzes a light component of a wavelength of substantially 950 nm, and wherein the distance between the first light receiving portion and the second light receiving portion exceeds 2 mm. -
10. A body fat measuring apparatus according to claim 1,
wherein the signal processing operation means analyzes all or some of light components of wavelengths of substantially 600 to 660 nm, and wherein the distance between the first light receiving portion and the second light receiving portion is not less than 2 mm. -
11. A body fat measuring apparatus according to claim 10,
wherein a central wavelength of the light projected from the light emitting portion is 650 nm. -
18. A program recording medium being readable by a computer and recording therein a program and data for causing a computer to perform functions of elements of a body fat measuring apparatus according to claim 1.
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2. A body fat measuring apparatus comprising:
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a light emitting portion for projecting light rays to a subject'"'"'s tissue;
a light receiving portion for detecting, of the light rays, at least one of a transmitted light ray having passed through the subject'"'"'s tissue and a reflected light ray reflected inside the subject'"'"'s body;
signal processing operation means for calculating at least one of the subject'"'"'s subcutaneous fat thickness and body fat percentage by performing an operation by use of a detection result of the light receiving portion, wherein either the number of light emitting portions or the number of light receiving portions is at least two and wherein the at least two light emitting portions or light receiving portions are situated at different distances from corresponding light receiving portions or light emitting portions;
wherein the light receiving portion includes a first light receiving portion situated at a predetermined distance from the light emitting portion, and a second light receiving portion situated farther away from the light emitting portion than the first light receiving portion, wherein the first light receiving portion detects the transmitted light ray and the reflected light ray having arrived by way of the subject'"'"'s skin or skin and a layer in the vicinity thereof, wherein the second light receiving portion detects the transmitted light ray and the reflected light ray having arrived by way of the subject'"'"'s skin and subcutaneous layer, wherein the signal processing operation means corrects a detection result of the second light receiving portion by a detection result of the first light receiving portion and performs an operation by use of a result of the correction to thereby calculate the subject'"'"'s subcutaneous fat thickness or body fat percentage, wherein the correction performed by the signal processing operation means is to divide the detection result of the second light receiving portion by the detection result of the light receiving portion, wherein the signal processing operation means analyzes all or some of light components of wavelengths of substantially 600 to 660 nm, and wherein the distance between the first light receiving portion and the second light receiving portion is at least 2 mm, and wherein a central wavelength of the light projected from the light emitting portion is 650 nm.
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3. A body fat measuring apparatus comprising:
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a light emitting portion for projecting light rays to a subject'"'"'s tissue;
a light receiving portion for detecting, of the light rays, at least one of a transmitted light ray having passed through the subject'"'"'s tissue and a reflected light ray reflected inside the subject'"'"'s body;
signal processing operation means for calculating at least one of the subject'"'"'s subcutaneous fat thickness and body fat percentage by performing an operation by use of a detection result of the light receiving portion, wherein either the number of light emitting portions or the number of light receiving portions is at least two and wherein the at least two light emitting portions or light receiving portions are situated at different distances from corresponding light receiving portions or light emitting portions;
wherein the light receiving portion includes a first light receiving portion situated at a predetermined distance from the light emitting portion, and a second light receiving portion situated farther away from the light emitting portion than the first light receiving portion, wherein the first light receiving portion detects the transmitted light ray and the reflected light ray having arrived by way of the subject'"'"'s skin or skin and a layer in the vicinity thereof, wherein the second light receiving portion detects the transmitted light ray and the reflected light ray having arrived by way of the subject'"'"'s skin and subcutaneous layer, wherein the signal processing operation means corrects a detection result of the second light receiving portion by a detection result of the first light receiving portion and performs an operation by use of a result of the correction to thereby calculate the subject'"'"'s subcutaneous fat thickness or body fat percentage, wherein the correction performed by the signal processing operation means is to divide the detection result of the second light receiving portion by the detection result of the first light receiving portion;
wherein the light emitting portion comprises;
a first light emitting portion situated at a predetermined distance from the light receiving portion; and
a second light emitting portion situated farther away from the light receiving portion than the first light emitting portion,wherein the light receiving portion detects a light ray projected from the first light emitting portion as at least one of a first transmitted light ray and a reflected ray having passed through the subject'"'"'s skin or skin and a layer in the vicinity thereof, and detects a light ray projected from the second light emitting portion as at least one of a second transmitted light ray and a reflected light ray having passed through the subject'"'"'s skin and subcutaneous fat layer and a reflected light ray, wherein the signal processing operation means corrects a detection result obtained by the second light emitting portion and the light receiving portion by a detection result obtained by the first light emitting portion and the light receiving portion and performs an operation by use of a result of the correction to thereby calculate the subject'"'"'s subcutaneous fat thickness or body fat percentage, wherein the signal processing operation means analyzes light components of wavelengths of substantially 600 to 660nm, and wherein the distance between the first light emitting portion and the second light emitting portion is at least 2 mm.
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4. A body fat measuring apparatus comprising:
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a light emitting portion for projecting light rays to a subject'"'"'s tissue;
a light receiving portion for detecting, of the light rays, at least one of a transmitted light ray having passed through the subject'"'"'s tissue and a reflected light ray reflected inside the subject'"'"'s body;
signal processing operation means for calculating at least one of the subject'"'"'s subcutaneous fat thickness and body fat percentage by performing an operation by use of a detection result of the light receiving portion, wherein either the number of light emitting portions or the number of light receiving portions is at least two and wherein the at least two light emitting portions or light receiving portions are situated at different distances from corresponding light receiving portions or light emitting portions;
wherein the light receiving portion includes a first light receiving portion situated at a predetermined distance from the light emitting portion, and a second light receiving portion situated farther away from the light emitting portion than the first light receiving portion, wherein the first light receiving portion detects the transmitted light ray and the reflected light ray having arrived by way of the subject'"'"'s skin or skin and a layer in the vicinity thereof, wherein the second light receiving portion detects the transmitted light ray and the reflected light ray having arrived by way of the subject'"'"'s skin and subcutaneous layer, wherein the signal processing operation means corrects a detection result of the second light receiving portion by a detection result of the first light receiving portion and performs an operation by use of a result of the correction to thereby calculate the subject'"'"'s subcutaneous fat thickness or body fat percentage, wherein the correction performed by the signal processing operation means is to divide the detection result of the second light receiving portion by the detection result of the first light receiving portion, wherein the correction performed by the signal processing operation means is to divide the detection result obtained by the second light emitting portion and the light receiving portion by the detection result obtained by the first light emitting portion and the light emitting portion, wherein the signal processing operation means analyzes light components of wavelengths of substantially 600 and 660 nm, and wherein the distance between the first light emitting portion and the second light emitting portion is at least 2 mm.
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5. A body fat measuring apparatus comprising:
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a light emitting portion for projecting light rays to a subject'"'"'s tissue;
a light receiving portion for detecting, of light rays, at least one of a transmitted light ray having passed through the subject'"'"'s tissue and a reflected light ray reflected inside the subject'"'"'s body;
signal processing operation means for calculating at least one of the subject'"'"'s subcutaneous fat thickness and body fat percentage by performing an operation by use of a detection result of the light receiving portion, wherein either the number of light emitting portions or the number of light receiving portions is at least two and wherein the at least two light emitting portions or light receiving portions are situated at different distances from corresponding light receiving portions or light emitting portions;
wherein the light receiving portion includes a first light receiving portion situated at a predetermined distance from the light emitting portion, and a second light receiving portion situated farther away from the light emitting portion than the first light receiving portion, wherein the first light receiving portion detects the transmitted light ray and the reflected light ray having arrived by way of the subject'"'"'s skin or skin and a layer in the vicinity thereof, wherein the second light receiving portion detects the transmitted light ray and the reflected light ray having arrived by way of the subject'"'"'s skin and subcutaneous layer, wherein the signal processing operation means corrects a detection result of the second light receiving portion by a detection result of the first light receiving portion and performs an operation by use of a result of the correction to thereby calculate the subject'"'"'s subcutaneous fat thickness or body fat percentage, and wherein the correction performed by the signal processing operation means is to divide the detection result of the second light receiving portion by the detection result of the first light receiving portion, wherein the light emitting portion comprises;
a first light emitting portion situated at a predetermined distance from the light receiving portion; and
a second light emitting portion situated farther away from the light receiving portion than the first light emitting portion,wherein the light receiving portion detects a light ray projected from the first light emitting portion as at least one of a first transmitted light ray and a reflected ray having passed through the subject'"'"'s skin or skin and a layer in the vicinity thereof, and detects a light ray projected from the second light emitting portion as at least one of a second transmitted light ray and a reflected light ray having passed through the subject'"'"'s skin and subcutaneous fat layer and a reflected light ray, wherein the signal processing operation means corrects a detection result obtained by the second light emitting portion and the light receiving portion by a detection result obtained by the first light emitting portion and the light receiving portion and performs an operation by use of a result of the correction to thereby calculate the subject'"'"'s subcutaneous fat thickness or body fat percentage, and wherein a central wavelength of the light projected by the first and the second light emitting portions is substantially 650 nm. - View Dependent Claims (6)
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12. A living body information measuring apparatus comprising:
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a light emitting portion for projecting light rays to a subject'"'"'s tissue;
a light receiving portion for detecting, of the light rays, at least one of a transmitted light ray having passed through the subject'"'"'s tissue and a reflected light ray reflected inside the subject'"'"'s body;
signal processing operation means for calculating the subject'"'"'s living body information by performing an operation by use of a detection result of the light receiving portion, wherein either the number of light emitting portions or the number of light receiving portions is at least two, wherein the at least two light emitting portions or light receiving portions are situated at different distances from corresponding light receiving portions or light emitting portions, wherein a plurality of optical paths that are provided from the one light source include the plurality of light emitting portions realized by switching among the optical paths, wherein the switching among the optical paths is performed by optical path adjusting means, or a plurality of optical paths that are provided from the one photoelectric convertion device include the plurality of light receiving portions realized by switching among the optical paths; and
wherein one of outputs of the plurality of light emitting portions or outputs of the plurality of light receiving portions is corrected by another one of the outputs. wherein the attenuating filter is made of a transparent resin substrate and an absorbing member attached thereonto. - View Dependent Claims (13, 14, 15)
wherein the signal processing operation means analyzes a light component of a wavelength of substantially 950 nm, and wherein the distance between the first light emitting receiving portion and the second light emitting portion exceeds 2 mm. -
14. A body fat measuring apparatus according to claim 15,
wherein the signal processing operation means analyzes light components of wavelengths of substantially 600 to 660 nm, and wherein the distance between the first light emitting portion and the second light emitting portion is at least 2 nm. -
15. A living body information measuring method using living body information measuring apparatus according to claims 12, said living body information measuring method comprising the steps of:
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projecting light rays to the subject by the light emitting portion;
a first step of detecting a transmitted light ray and/or a reflected light ray having arrived by way of the subject'"'"'s skin and/or skin and a layer in the vicinity thereof;
a second step of detecting a transmitted light ray and/or a reflected light ray having arrived by way of the subject'"'"'s skin and subcutaneous fat layer; and
calculating living body information by the signal processing operation means by correcting a detection result of the second step by a detection result of the first step and performing an operation by use of a result of the correction.
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16. A living body information measuring apparatus comprising:
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a light emitting portion for projecting light rays to a subject'"'"'s tissue;
a light receiving portion for detecting, of the light rays, at least one of a transmitted light ray having passed through the subject'"'"'s tissue and a reflected light ray reflected inside the subject'"'"'s body;
signal processing operation means for calculating the subject'"'"'s living body information by performing an operation by use of a detection result of the light receiving portion, wherein either the number of light emitting portions or the number of light receiving portions is at least two, wherein the at least two light emitting portions or light receiving portions are situated at different distances from corresponding light receiving portions or light emitting portions, wherein a plurality of optical paths are provided from the one light source including a photoelectric conversion device, allowing switching among said optical paths, wherein the plurality of light emitting portions are realized by the light source being moved by moving means, or the plurality of light receiving portions are realized by the photoelectric conversion device being moved by the moving means; and
wherein one of outputs of the plurality of light emitting portions or outputs of the plurality of light receiving portions is corrected by another one of the outputs, said living body information measuring method comprising the steps of;
projecting light rays to the subject by the light emitting portion;
a first step of detecting a transmitted light ray and/or a reflected light ray having arrived by way of the subject'"'"'s skin and/or skin and a layer in the vicinity thereof;
a second step of detecting a transmitted light ray and/or a reflected light ray having arrived by way of the subject'"'"'s skin and subcutaneous fat layer; and
calculating living body information by the signal processing operation means by correcting a detection result of the second step by a detection result of the first step and performing an operation by use of a result of the correction - View Dependent Claims (17)
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19. A living body information measuring apparatus comprising:
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a light emitting portion for projecting light rays to a subject'"'"'s tissue;
a light receiving portion for detecting, of the light rays, at least one of a transmitted light ray having passed through the subject'"'"'s tissue and a reflected light ray reflected inside the subject'"'"'s body;
signal processing operation means for calculating the subject'"'"'s living body information by performing an operation by use of a detection result of the light receiving portion, wherein either. the number of light emitting portions or the number of light receiving portions is at least two, wherein the at least two light emitting portions or light receiving portions are situated at different distances from corresponding light receiving portions or light emitting portions, wherein a plurality of optical paths are provided from the one light source including a photoelectric conversion device, allowing switching among said optical paths, wherein the plurality of light emitting portions are realized by the light source being moved by moving means, or the plurality of light receiving portions are realized by the photoelectric conversion device being moved by the moving means; and
wherein one of outputs of the plurality of light emitting portions or outputs of the plurality of light receiving portions is corrected by another one of the outputs. - View Dependent Claims (20, 21, 22, 23, 24, 25)
wherein attenuating means is provided for attenuating a quantity of light output from, of the plurality of light emitting portions, a light emitting portion closer to the light receiving portion. -
21. A living body information measuring apparatus according to claim 20,
wherein the attenuating means has a function of attenuating the quantity of the light to 50 to 5%. -
22. A living body information measuring apparatus according to claim 20,
wherein the attenuating means is made of a transparent resin substrate and an absorbing member attached thereonto. -
23. A program recording medium being readable by computer and recording therein a program and data for causing a computer to perform functions of elements of a living body information measuring apparatus according to claim 19.
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24. A program recording medium being readable by a computer and recording therein a program and data for causing a computer to perform functions of elements of a body fat measuring apparatus according to claim 19.
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25. A living body information measuring method using living body information measuring apparatus according to claim 19, said living body information measuring method comprising the steps of:
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projecting light rays to the subject by the light emitting portion;
a first step of detecting a transmitted light ray and/or a reflected light ray having arrived by way of the subject'"'"'s skin and/or skin and a layer in the vicinity thereof;
a second step of detecting a transmitted light ray and/or a reflected light ray having arrived by way of the subject'"'"'s skin and subcutaneous fat layer; and
calculating living body information by the signal processing operation means by correcting a detection result of the second step by a detection result of the first step and performing an operation by use of a result of the correction.
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26. A living body information measuring apparatus comprising:
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a light emitting portion for projecting light rays to a subject'"'"'s tissue;
a light receiving portion for detecting, of the light rays, at least one of a transmitted light ray having passed through the subject'"'"'s tissue and a reflected light ray reflected inside the subject'"'"'s body;
signal processing operation means for calculating the subject'"'"'s living body information by performing an operation by use of a detection result of the light receiving portion, wherein either the number of light emitting portions or the number of light receiving portions is at least two, wherein the at least two light emitting portions or light receiving portions are situated at different distances from corresponding light receiving portions or light emitting portions, wherein a plurality of optical paths that are provided from the one light source include the plurality of light emitting portions realized by switching among the optical paths, or a plurality of optical paths that are provided from the one photoelectric conversion device include the plurality of light receiving portions realized by switching among the optical paths; and
wherein one of outputs of the plurality of light emitting portions or outputs of the plurality of light receiving portions is corrected by another one of the outputs. - View Dependent Claims (27, 28, 29)
wherein the switching among the optical paths is performed by optical path adjusting means comprising a movable shutter disposed in front of the light source and having a hole and a plurality of optical path members derived from the shutter. -
28. A living body information measuring apparatus according to claim 26,
wherein the optical paths are made of an optical fiber or an acrylic resin. -
29. A living body information measuring method using living body information measuring apparatus according to claim 26, said living body information measuring method comprising the steps of:
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projecting light rays to the subject by the light emitting portion;
a first step of detecting a transmitted light ray and/or a reflected light ray having arrived by way of the subject'"'"'s skin and/or skin and a layer in the vicinity thereof;
a second step of detecting a transmitted light ray and/or a reflected light ray having arrived by way of the subject'"'"'s skin and subcutaneous fat layer; and
calculating living body information by the signal processing operation means by correcting a detection result of the second step by a detection result of the first step and performing an operation by use of a result of the correction.
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30. A method of measuring living body information by projecting light from a light emitting portion to a subject and measuring a quantity of light having passed through the subject, said method comprising:
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a first step in which the light emitting portion is situated adjacent to a light receiving portion, and the quantity of the light having passed through the subject is measured by the light receiving portion;
a second step in which a distance between the light receiving portion and the light emitting portion is increased, light is projected to the subject, and the quantity of the light having passed through the subject is measured by the light receiving portion; and
a third step in which a quotient (division) of a measurement value obtained by the first step and a measurement value obtained by the second step is obtained to calculate living body information. - View Dependent Claims (31)
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32. A method of measuring living body information by projecting light emitted from a light emitting portion to a subject and measuring a quantity of light having passed through the subject, said method comprising:
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a first step in which the light emitted from the light emitting portion is made incident on the subject through a first light directing path, and the quantity of the light having passed through the subject is measured by a light receiving portion disposed adjacent to an exit end of the first light directing path;
a second step in which the light emitted from the light emitting portion is made incident on the subject through a second light directing path disposed so that an exit end thereof is situated farther away from the light receiving portion than the exit end of the first light directing path, and the quantity of the light having passed through the subject is measured; and
a third step in which a quotient (division) of a measurement value obtained by the first step and a measurement value obtained by the second step is obtained to calculate living body information. - View Dependent Claims (33)
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Specification