WO2019069513A1 - Dispositif de mesure de graisse - Google Patents

Dispositif de mesure de graisse Download PDF

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Publication number
WO2019069513A1
WO2019069513A1 PCT/JP2018/024352 JP2018024352W WO2019069513A1 WO 2019069513 A1 WO2019069513 A1 WO 2019069513A1 JP 2018024352 W JP2018024352 W JP 2018024352W WO 2019069513 A1 WO2019069513 A1 WO 2019069513A1
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Prior art keywords
light
emitting diode
light emitting
fat
unit
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PCT/JP2018/024352
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English (en)
Japanese (ja)
Inventor
青木　宏道
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浜松ホトニクス株式会社
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Publication of WO2019069513A1 publication Critical patent/WO2019069513A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light

Definitions

  • the present disclosure relates to a fat measuring device that measures a value related to fat of an object.
  • An object of the embodiments is to provide a fat measuring device capable of accurately measuring a value related to fat of an object.
  • One aspect of the present invention is a fat measuring device for measuring a numerical value related to fat of an object, comprising: a first light emitting diode having a central wavelength of emission spectrum in a range of 920 nm to 940 nm; and a first light emitting diode Light emitted from the first light emitting diode portion and light generated from the second light emitting diode portion, the second light emitting diode portion having the central wavelength of the light emission spectrum shorter than the central wavelength of the light emission spectrum of the portion;
  • a light irradiator that synthesizes and irradiates an object as irradiation light
  • a spectrometer that disperses measurement light generated in response to irradiation of irradiation light in the object, and measurement light that is dispersed by the spectrometer is detected and measured
  • a second light emitting diode comprising: a photodetector for outputting spectral data concerning light; and an operation unit for calculating information concerning numerical
  • FIG. 1 is a schematic block diagram of a fat measuring device according to a preferred embodiment.
  • the fat measuring device 1 shown in FIG. 1 is a device for measuring the amount of fat, the fat percentage and the like as numerical values related to the fat of an object S such as a human body, and the head portion 3, the main device 5, and the head portion 3) and a cable 7 for connecting the main unit 5 with the main unit 5.
  • the head unit 3 irradiates the illumination light to the object S by being in close contact with the object S, receives the measurement light including the reflected light and the scattered light generated in the object S according to it, and measures the measurement light
  • the light is guided inside the main unit 5 via the cable 7.
  • an optical cable 7a inserted inside the cable 7 is provided between the surface of the head unit 3 on the side of the object S and the inside of the main unit 5, and the measurement from the object S is performed by the optical cable 7a.
  • Light is guided inside the main device 5.
  • a cable (not shown) for electrically connecting the head unit 3 and the main device 5 is also inserted into the cable 7.
  • object S which is a measurement object of fat measuring device 1, other than a human body, it may be various kinds of animals and plants, or a part of those tissues.
  • FIG. 2 is a plan view of the head unit 3 as viewed from the surface 3 a side in close contact with the object S.
  • the head portion 3 has a substantially cylindrical shape, and incorporates the four first light emitting diode elements 9a and the two second light emitting diode elements 11a in a state capable of emitting light from the surface 3a to the outside. ing. Furthermore, a hole 13 is provided at the center of the surface 3 a of the head 3, and the end of the optical cable 7 a is disposed inside the hole 13. With such a structure, the measurement light of the object S is incident from the end of the optical cable 7a.
  • the first light emitting diode element 9 a is an LED (Light Emitting Diode) having a central wavelength of an emission spectrum in a wavelength range of 920 nm to 940 nm.
  • the central wavelength of the emission spectrum of the first light emitting diode element 9a is 930 nm.
  • the four first light emitting diode elements 9a constitute a first light emitting diode portion 9 which emits light of a central wavelength within a wavelength band in which absorption of light by fat is likely to occur.
  • the second light emitting diode element 11a is an LED having a central wavelength of an emission spectrum shorter than the central wavelength of the emission spectrum of the first light emitting diode element 9a.
  • the central wavelength of the emission spectrum of the second light emitting diode element 11a is 875 nm.
  • the two second light emitting diode elements 11a constitute the second light emitting diode unit 11 which emits light having a central wavelength shorter than the wavelength band in which absorption of light by fat is likely to occur.
  • the number of the second light emitting diode elements 11 a configuring the second light emitting diode unit 11 is smaller than the number of the first light emitting diode elements 9 a configuring the first light emitting diode unit 9. Further, the light emission intensities of the respective second light emitting diode elements 11 a and the respective first light emitting diode elements 9 a are set to be the same. Therefore, the intensity of the light generated by the entire second light emitting diode unit 11 is set to be smaller than the intensity of the light generated by the entire first light emitting diode unit 9.
  • the number n of the first light emitting diode elements 9a (n is an integer of 1 or more) and the number m of the second light emitting diode elements 11a (m is an integer of 1 or more) is not limited to a specific number. If it is> m, various numbers can be set.
  • the head unit 3 incorporating the first light emitting diode unit 9 and the second light emitting diode unit 11 combines the light generated from the first light emitting diode unit 9 and the light generated from the second light emitting diode unit 11.
  • the object S can be irradiated.
  • fatty acids have the property of absorbing light at around 927 nm, and also have the property of slightly changing the absorption band due to the difference in the geometrical structure of the CH chain-like portion on the molecular structure.
  • the illumination light emitted from the head portion 3 has a peak wavelength in a wavelength band of 920 to 940 nm (hereinafter referred to as "fat absorption band”) where absorption of light by fat is apt to occur, and In a region longer than the peak wavelength, it has an emission spectrum which changes more sharply than the region shorter than the peak wavelength.
  • fat absorption band a wavelength band of 920 to 940 nm
  • FIG. 3 shows a characteristic graph SP1 of the emission spectrum of the illumination light emitted from the head unit 3 in comparison with a characteristic graph SP0 of the emission spectrum of the light emitted from a general halogen lamp.
  • the emission spectrum of the light emitted from the halogen lamp has a peak at a wavelength 100 nm or more shorter than the absorption band of fat, and spreads in a wide wavelength range from 490 nm to 1100 nm.
  • the emission spectrum of the illumination light emitted from the head portion 3 has a peak near 930 nm included in the absorption band of fat, and the long wavelength side of the peak wavelength changes sharply, and the peak wavelength is short The wavelength side changes gently compared to the long wavelength side.
  • the calculation of the information on the numerical value of fat by the fat measurement device 1 is performed by differentiating the spectrum data of the measurement light generated in the object S in response to the illumination of the illumination light.
  • the characteristics of the illumination light as described above are in the wavelength range W1 of about 870 to about 970 nm including the absorption band of fat and its adjacent wavelength band, which is the wavelength range that affects the calculation result of fat numerical value by differential calculation.
  • the emission intensity is distributed efficiently.
  • the characteristic of the illumination light changes sharply at the boundary on the long wavelength side of the wavelength region W1, so that the light emission intensity is sufficiently small near 956 nm where light absorption by water occurs.
  • the main device 5 incorporates a spectroscope 5a, a photodetector 5b, and a control device 5c.
  • the spectroscope 5a is optically connected to the end of the optical cable 7a, and the measurement light incident from the object S via the head portion 3 and the cable 7 is divided into a plurality of wavelength components by a prism, a diffraction grating, or the like.
  • the photodetector 5b is optically connected to the output of the spectroscope 5a, and uses a plurality of wavelength components of the measurement light separated by the spectroscope 5a using a sensor such as a line sensor, a photodiode array, or an image sensor.
  • spectral data indicating the distribution of the intensity of the measurement light for each wavelength is generated.
  • the photodetector 5b is electrically connected to the control device 5c, and outputs the generated spectrum data to the control device 5c.
  • the light detector 5b for example, one having detection sensitivity in a wavelength range of 600 nm to 1000 nm is used.
  • the control device 5c of the main body device 5 is configured to include a control unit 5d and an operation unit 5e as functional components.
  • the control device 5c physically includes a central processing unit (CPU), a random access memory (RAM) or a read only memory (ROM) as a recording medium, and a communication module.
  • Each functional unit of the control device 5c stores programs in advance on hardware such as a CPU and a RAM to operate a communication module and the like under the control of the CPU and read and write data in the RAM. , And by reading data from the ROM.
  • the control device 5c is connected in data communication with an external computer 15 provided with a main body 15a, a display 15b such as a display, and an input unit 15c such as a keyboard and a mouse.
  • the control unit 5 d of the control device 5 c controls the execution of the measurement process by the fat measuring device 1 and controls the irradiation of the illumination light in the head unit 3. That is, in response to the reception of the instruction input from the external computer 15, the measurement process is started, and the irradiation of the illumination light in the head unit 3 is started.
  • the control device 5c is electrically connected to the first light emitting diode unit 9 and the second light emitting diode unit 11 of the head unit 3 via a cable, and the first light emitting diode unit 9 and the second light emitting diode unit 9 are controlled according to the control of the control unit 5d. Power is supplied to the second light emitting diode unit 11. At this time, the control device 5c supplies power so that the light emission intensities of the respective second light emitting diode elements 11a and the respective first light emitting diode elements 9a become the same.
  • the calculation unit 5e of the control device 5c calculates numerical value information on fat of the object S based on the spectrum data output from the light detector 5b in accordance with control of execution of measurement processing by the control unit 5d. Information of the calculated numerical value is transmitted to the external computer 15, and displayed (output) on the display unit 15b.
  • the computing unit 5e performs second derivative of the spectrum data with respect to the wavelength to calculate a wavelength distribution of second derivative values.
  • FIG. 4 is a graph showing an example of the wavelength distribution of the second derivative value calculated by the calculation unit 5e.
  • the wavelength distribution R1 of the second derivative value calculated for the object S having a relatively small amount of fat and the second derivative value calculated for the object S having a relatively large amount of fat A wavelength distribution R3 and a wavelength distribution R2 of second-order derivative values calculated for an object S having an intermediate value of fat mass are shown.
  • the second-order derivative value changes relatively largely depending on the fat amount.
  • the calculation unit 5e calculates the representative value x1 of the second derivative of the wavelength band ⁇ 1 near 850 nm, the representative value x2 of the second derivative of the wavelength band ⁇ 2 near 920 nm, and the second order of the wavelength band ⁇ 3 near 950 nm.
  • a, b, c and d are operation coefficients calculated in advance by regression operation and stored in the control device 5c.
  • the computing unit 5e may obtain, as representative values x1, x2 and x3, an average value of secondary differential values of the respective wavelength bands ⁇ 1, ⁇ 2 and ⁇ 3 or may obtain a maximum value or a minimum value.
  • the value of the central wavelength of each wavelength band may be determined.
  • the information on the numerical value of fat calculated by the calculation unit 5e may be information on fat mass, information on a fat percentage, or both of them.
  • the equation (1) it is possible to obtain information on the numerical value of fat based on the optical characteristic values x1, x2, x3 which change according to the fat mass.
  • the number of representative values used for calculation of the information regarding the numerical value of fat mass may be changed suitably, and the range of a wavelength range may also be changed suitably.
  • the operation coefficients a, b, c, d stored in the control device 5c are acquired as follows. First, the fat amount of the object S is obtained in advance by chemical analysis such as Soxhlet method. Next, by measuring the object S by the fat measuring device 1, the wavelength distribution of the second derivative value is calculated based on the spectrum data. Then, calculation coefficients a, b, c, d are obtained by regression analysis of fat mass data by chemical analysis and data of wavelength distribution of second derivative using an external computer 15 or the like, and the control device 5c Remember inside. Regression analysis is performed by correlating data of fat mass by chemical analysis with data of wavelength distribution of second derivative values by multiple regression analysis, PLS analysis or the like.
  • the present inventors have found the following facts as a result of earnest research.
  • the waveform pattern of the emission spectrum of the irradiation light with which the object is irradiated is variously changed, and the spectrum of the measurement light diffused and reflected in the object is observed accordingly. It turned out that the degree of reflection changes a lot.
  • the reason that the degree of reflection of numerical values regarding fat is relatively high is that the peak wavelength is in the wavelength band where absorption of light by fat occurs, and in the region longer than the peak wavelength, the wavelength is shorter than the peak wavelength
  • the head portion 3 has a peak wavelength in the fat absorption band, and in a region longer than the peak wavelength, a region shorter than the peak wavelength than the peak wavelength Irradiated light having an emission spectrum that changes sharply is emitted toward the object S. Then, the measuring light generated in the object S in response to the irradiation of the irradiation light is dispersed by the spectroscope 5a in the main body device 5, and the separated measuring light is detected by the light detector 5b in the main body device 5. Spectrum data on the measurement light is output. Further, the computing unit 5e in the main unit 5 calculates information on the numerical value of fat based on the spectrum data.
  • the emission spectrum of the irradiated light is relatively flat, so when observing the optical response to fat, it is efficient It becomes difficult to observe the response. That is, the absorption response pattern of fat can not be dynamically reflected in the observed spectral data. In particular, this tendency is remarkable when trying to measure fat stably by differentiating spectral data.
  • the irradiation light having the emission spectrum in the absorption band of fat and its adjacent wavelength band is used, the optical response to fat can be efficiently observed.
  • the emission spectrum of the irradiation light has a sufficiently low emission intensity near the wavelength at which the absorption of light by water occurs. Therefore, it is possible to reduce the influence of the absorption of light by water in the result of the differential calculation of the spectral data, and to improve the calculation accuracy of the information related to the numerical value of fat.
  • the light emitting diode element is used as the light irradiation part, downsizing and reduction of power consumption are facilitated compared to a halogen lamp, a xenon lamp, etc.
  • An emission spectrum suitable for measurement can be easily realized by a combination of a plurality of light emitting diode elements.
  • the computing unit 5e of the present embodiment performs second derivative of spectrum data to calculate second derivative data, and calculates information related to numerical values based on the second derivative data.
  • the prediction accuracy regarding the numerical value of fat measured can be raised by using the second derivative data of spectrum data, and in addition, the error by the influence of absorption of light by water can also be reduced.
  • FIG. 5 is a graph showing the emission spectrum of the irradiation light in the present example and the emission spectrum of the irradiation light of the comparative example.
  • the characteristic graph SP0 shows the emission spectrum of the light emitted from the halogen lamp
  • the characteristic graph SP1 shows the emission spectrum of the irradiation light of this embodiment
  • the characteristic graph SP2 shows the emission spectrum of the comparative example.
  • the emission spectrum is shown.
  • the difference in configuration from the present embodiment in the comparative example is that the number of first light emitting diode elements 9a incorporated in the head unit 3 is set to two, the same number as the number of second light emitting diode elements 11a. .
  • the peak is shifted to the short wavelength side compared to the embodiment due to the decrease of the emission intensity on the long wavelength side, and the light intensity is on the long wavelength side and the short wavelength side of the peak wavelength Rate of change is equal.
  • FIG. 6 and 7 show the results of measuring the object in the present embodiment and the comparative example.
  • FIG. 6 shows a fat mass conversion value calculated by a plurality of measurements. In the first to fifth measurements, the target having a relatively low fat mass is targeted, and the measurement number of times is 7 to 11 In the above, the target of medium fat is targeted, and the target of relatively high fat mass is targeted between the 13th and 17th measurements.
  • FIG. 7 shows the standard deviation of the fat mass conversion value when measured five times for each of the objects 1 to 3.
  • the object 1 has a relatively small amount of fat
  • the object 2 has a fat
  • the amount is an intermediate value
  • the object 3 has a relatively large amount of fat.
  • the measurement results in the comparative example show variations and lack of stability.
  • the variation in measurement results of objects having relatively large amounts of fat and objects having relatively small amounts of fat is large.
  • stable measurement results are obtained among a plurality of measurements.
  • the computing unit 5e performs second derivative of the spectrum data to calculate second derivative data, and based on that, calculates information on the numerical value of fat.
  • First derivative with respect to frequency may be calculated to calculate first derivative data, and based on that, information on a numerical value of fat may be calculated.
  • the control unit 5d supplies power so that the light emission intensities of the respective second light emitting diode elements 11a and the respective first light emitting diode elements 9a become the same.
  • the feeding may be controlled such that the intensity of the light generated by the second light emitting diode unit 11 is smaller than the intensity of the light generated by the first light emitting diode unit 9.
  • the control unit 5d can relatively control the intensities of both lights, and the second light emitting diode element 11a of the second light emitting diode unit 11 and the first light emitting diode element 9a of the first light emitting diode unit 9 At least one of the power supplies may be controlled.
  • the number of first light emitting diode elements 9a does not necessarily have to be larger than the number of second light emitting diode elements 11a, and the number of first light emitting diode elements 9a is equal to or less than the number of second light emitting diode elements 11a. May be
  • a neutral density filter 17 may be provided. Even with such a configuration, the intensity of the light generated by the second light emitting diode unit 11 can be smaller than the intensity of the light generated by the first light emitting diode unit 9.
  • the number of first light emitting diode elements 9a does not necessarily have to be larger than the number of second light emitting diode elements 11a, and the number of first light emitting diode elements 9a is equal to or less than the number of second light emitting diode elements 11a. May be
  • FIG. 9 is a perspective view showing a configuration example of a light source device 19 of a modification.
  • the light source device 19 has a configuration in which three light emitting elements 91 1 to 91 3 are flip-chip mounted on a substrate 90.
  • two of the light emitting elements 91 k have the same center as the first light emitting diode element 9 a.
  • Each light emitting element 91 k is, for example, an LED (light emitting diode).
  • One electrode terminal of each light emitting element 91 k is electrically connected to the wiring W k1 on the substrate 90.
  • the other electrode terminal of each light emitting element 91 k is electrically connected to the wiring W k2 on the substrate 90.
  • the distance between the three light emitting elements 91 1 to 91 3 on the substrate 90 is preferably short, and, for example, the distance can be 1 mm or less.
  • the light source device 19 is provided with a light source drive circuit (not shown).
  • the light source drive circuit can control the light emission of each light emitting element 91 k under the control of the control unit 5 d of the main body device 5.
  • the light source drive circuit controlled by the control unit 5 d targets the wiring set of the wiring set W 11 , W 12 , the wiring set W 21 , W 22 , and the wiring set W 31 , W 32 , and their wiring W k1 , And W k2 simultaneously, irradiation light can be simultaneously output from the light emitting elements 91 k connected to the wirings W k1 and W k2 .
  • This lens is formed of, for example, a resin, and may be integral with the substrate 90 and the light emitting elements 91 1 to 91 3 or may be separate from these.
  • the spectroscope 5 a and the light detector 5 b may be built in the head unit 3, and the head unit 3 and the main unit 5 may only be electrically connected by a cable.
  • the light source device may be incorporated in the main body device 5, and the irradiation light emitted from the light source device may be guided to the head unit 3 via the optical cable in the cable 7.
  • some functions of the main device 5 may be realized by a smart device such as a smartphone or a tablet terminal.
  • the light irradiation unit has a peak wavelength in a wavelength band where absorption of light by fat occurs, and in a region longer than the peak wavelength, the peak wavelength is shorter than the peak wavelength.
  • Irradiated light having an emission spectrum that changes more sharply than the region is irradiated toward the object. Then, the measurement light generated in the object according to the irradiation of the irradiation light is separated by the spectroscope, the measurement light separated is detected by the light detector, and spectrum data on the measurement light is output, and the calculation unit Information on the value of fat is calculated based on the spectral data.
  • the operation unit performs first-order differentiation on the spectrum data to calculate first-order derivative data, and calculates information on numerical values based on the first-order derivative data.
  • the operation unit performs first-order differentiation on the spectrum data to calculate first-order derivative data, and calculates information on numerical values based on the first-order derivative data.
  • the first derivative data of the spectral data it is possible to improve the prediction accuracy regarding the numerical value of fat to be measured, and additionally, it is possible to reduce an error due to the influence of light absorption by water.
  • the calculation unit calculates second derivative data by secondarily differentiating the spectrum data, and calculates information on numerical values based on the second derivative data.
  • the second derivative data of the spectrum data it is possible to enhance the prediction accuracy regarding the numerical value of fat to be measured, and additionally, it is possible to reduce an error due to the influence of light absorption by water.
  • control unit further controls the irradiation of the irradiation light by the light irradiation unit, and the control unit is configured such that the intensity of the light generated by the second light emitting diode unit is higher than the intensity of the light generated by the first light emitting diode unit It is also preferable to control at least one of the first light emitting diode unit and the second light emitting diode unit so as to be smaller.
  • Such a configuration has a peak wavelength in the wavelength band where absorption of light by fat occurs, and in the region longer than the peak wavelength, the emission spectrum changes more sharply than the region shorter than the peak wavelength. It can be irradiated with the irradiation light. As a result, it is possible to obtain spectral data which is largely reflected in fat values and which is less affected by light absorption by water.
  • the first light emitting diode portion has n (n is an integer of 1 or more) light emitting diode elements, and the second light emitting diode portion is m (m is an integer of 1 or more) light emitting diodes It is also preferred to have elements and n> m. With this configuration as well, numerical values relating to fat can be largely reflected, and spectral data with less influence of light absorption by water can be obtained.
  • the second light emitting diode portion has a light reducing filter for reducing light generated from the second light emitting diode portion, and the light reducing filter has an intensity of light generated by the second light emitting diode portion. It is also preferable to dim the light generated from the second light emitting diode portion so as to be smaller than the intensity of the light generated by the first light emitting diode portion.
  • information on numerical values may be at least one of fat mass and fat percentage.
  • a fat measuring device for measuring a numerical value of fat of an object is used, and the numerical value of fat of the object can be accurately measured.
  • S target object 1: fat measuring device 3, 3 A: head portion (light irradiation portion) 5: main body device 5a: spectroscope 5b: light detector 5c: control device 5d: control portion 5e ... Arithmetic unit, 7 ... Cable, 9 ... 1st light emitting diode part, 9a ... 1st light emitting diode element, 11 ... 2nd light emitting diode part, 11a ... 2nd light emitting diode element, 17 ... attenuation filter, 19 ... light source device , 91 1 , 91 2 , 91 3 ... light emitting elements.

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Abstract

L'invention concerne un dispositif de mesure de graisse (1) comprenant : une partie tête (3) comprenant une première partie diode électroluminescente (9) présentant une longueur d'onde centrale dans une plage de 920 à 940 nm inclus, et une seconde partie diode électroluminescente (11) présentant une longueur d'onde centrale dans un spectre d'émission de lumière plus étroit que celui de la première partie diode électroluminescente (9), la partie tête (3) synthétisant la lumière générée par la première partie diode électroluminescente (9) et la lumière générée par la seconde partie diode électroluminescente (11) et irradiant un sujet (S) avec la lumière résultante en tant que lumière d'irradiation; un spectroscope (5a) qui disperse la lumière de mesure produite par le sujet (S); un détecteur de lumière (5b) qui détecte la lumière de mesure dispersée par le spectroscope (5a) et émet des données de spectre relatives à la lumière de mesure; et un dispositif de commande (5c) qui calcule des informations concernant un niveau de graisse en fonction des données de spectre; le dispositif de mesure de graisse (1) étant conçu de telle sorte que l'intensité de la lumière générée par la seconde partie diode électroluminescente (11) soit inférieure à l'intensité de la lumière générée par la première partie diode électroluminescente (9).
PCT/JP2018/024352 2017-10-06 2018-06-27 Dispositif de mesure de graisse WO2019069513A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022153781A1 (fr) * 2021-01-18 2022-07-21 浜松ホトニクス株式会社 Dispositif et procédé d'analyse

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633087A (en) * 1985-04-24 1986-12-30 Trebor Industries, Inc. Near infrared apparatus for measurement of organic constituents of material
JPS63305234A (ja) * 1987-06-05 1988-12-13 株式会社ケット科学研究所 物質の有機成分を測定するための近赤外線装置の改良
JP2000046734A (ja) * 1998-07-28 2000-02-18 Olympus Optical Co Ltd 微量光測定装置
US20090024041A1 (en) * 2007-07-19 2009-01-22 Samsung Electronics Co., Ltd. Apparatus for measuring bio-information
JP2011146725A (ja) * 2011-02-21 2011-07-28 Sumitomo Electric Ind Ltd 食品品質検査装置、食品成分検査装置、異物成分検査装置、食味検査装置および変移状態検査装置
WO2015159704A1 (fr) * 2014-04-16 2015-10-22 ローム株式会社 Système d'imagerie optique médicale et caméra

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633087A (en) * 1985-04-24 1986-12-30 Trebor Industries, Inc. Near infrared apparatus for measurement of organic constituents of material
JPS63305234A (ja) * 1987-06-05 1988-12-13 株式会社ケット科学研究所 物質の有機成分を測定するための近赤外線装置の改良
JP2000046734A (ja) * 1998-07-28 2000-02-18 Olympus Optical Co Ltd 微量光測定装置
US20090024041A1 (en) * 2007-07-19 2009-01-22 Samsung Electronics Co., Ltd. Apparatus for measuring bio-information
JP2011146725A (ja) * 2011-02-21 2011-07-28 Sumitomo Electric Ind Ltd 食品品質検査装置、食品成分検査装置、異物成分検査装置、食味検査装置および変移状態検査装置
WO2015159704A1 (fr) * 2014-04-16 2015-10-22 ローム株式会社 Système d'imagerie optique médicale et caméra

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022153781A1 (fr) * 2021-01-18 2022-07-21 浜松ホトニクス株式会社 Dispositif et procédé d'analyse
GB2616155A (en) * 2021-01-18 2023-08-30 Hamamatsu Photonics Kk Analysis device and analysis method

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