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公开(公告)号：US09638619B2
公开(公告)日：2017-05-02
申请号：US14995685
申请日：2016-01-14
申请人： HORIBA, Ltd.
发明人： Tetsuji Yamaguchi
CPC分类号： G01N15/0211 , G01N2015/0053
摘要： The present invention is made focusing on the viscoelasticity of a sample, which is completely different from a conventional idea, and provides an optical analysis cell 100 that in order to easily make the thickness of the sample X uniform as well as making a pair of light transmitting plates 10 parallel to each other without the use of any spacer, includes the pair of light transmitting plates 10 that sandwich and hold the sample X having predetermined viscoelasticity between mutually opposed inward surfaces 10a. In addition, the optical analysis cell 100 further includes a distance fixing member 20 having a pair of opposed surfaces 21a and 22a provided separately from each other by a predetermined distance. Also, it is configured that the respective light transmitting plates 10 receive the elastic force of the sample X, and thereby outward surfaces 10b on the sides opposite to the inward surfaces 10a of the respective light transmitting plates 10 are pressed against corresponding respective opposed surfaces 21a and 22a to fix the separation distance between the inward surfaces 10a.
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公开(公告)号：US11169068B2
公开(公告)日：2021-11-09
申请号：US16341758
申请日：2017-10-11
申请人： HORIBA, Ltd.
摘要： A particle size distribution measurement device contains a specific particle size light intensity calculation unit that calculates a light intensity generated by particles having a specific particle size that are contained in an object, a correlation data storage unit that stores particle number-light intensity correlation data, and a particle number calculation unit that calculates the number of particles having a specific particle size that are contained in the object being measured based on light intensities calculated by the specific particle size light intensity calculation unit, and on the particle number-light intensity correlation data.
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公开(公告)号：US10782225B2
公开(公告)日：2020-09-22
申请号：US16013431
申请日：2018-06-20
申请人： HORIBA, Ltd.
摘要： The present invention is one that makes it possible to facilitate the assembly of an optical measurement cell, as well as shorten optical path length without taking account of handling of a spacer, and an optical measurement cell 2 including a pair of light transmitting plates 21 and 22 respectively having opposite surfaces 21a and 22a facing each other and containing test liquid X between the pair of opposite surfaces 21a and 22a of the pair of light transmitting plates 21 and 22. In addition, one 21a of the opposite surfaces 21a and 22a is formed with a spacer film 25 that contacts with the other opposite surface 22a to define the distance between the pair of opposite surfaces 21a and 22a.
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公开(公告)号：US11047786B2
公开(公告)日：2021-06-29
申请号：US16461511
申请日：2017-10-30
申请人： HORIBA, LTD.
发明人： Tetsuji Yamaguchi
IPC分类号： G01N15/02
摘要： The particle size distribution measuring apparatus includes a centrifugal sedimentation measuring mechanism and a dynamic light scattering measuring mechanism. The centrifugal sedimentation measuring mechanism causes particles to settle out by rotating a measurement cell accommodating particles dispersed in a dispersion medium and detects transmitted light by irradiating light to the measurement cell to measure a first particle size distribution on a basis of a change of transmitted light intensity of the transmitted light. The dynamic light scattering measuring mechanism detects scattered light occurred upon irradiation of light to particles so as to measure a second particle size distribution based on a change of scattered light intensity of the scattered light occurred due to Brownian motion of particles. After the centrifugal sedimentation measuring mechanism detects the transmitted light, the dynamic light scattering measuring mechanism measures the second particle size distribution by irradiating light onto the measurement cell.
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公开(公告)号：US10690593B2
公开(公告)日：2020-06-23
申请号：US15345766
申请日：2016-11-08
申请人： HORIBA, Ltd.
发明人： Tetsuji Yamaguchi
摘要： The present invention is a sample analyzer 100 that makes it possible to accurately analyze a sample even when the sample is such as one in a state where particles are cross-linked, or one containing foreign bodies and that calculates an autocorrelation function from a detection signal obtained by irradiating a sample with inspection light L1, and from the autocorrelation function, analyzes the sample. In addition, the sample analyzer 100 includes: an autocorrelation function determination part 53 that determines whether or not the displacement amount of an autocorrelation function serving as a comparison target from an autocorrelation function serving as a reference is within a predetermined range; and a sample analysis part 54 that analyzes the sample with use of an autocorrelation function of which the displacement amount is determined by the autocorrelation function determination part 53 to be within the predetermined range.
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6.发明授权公开(公告)号：US09869626B2
公开(公告)日：2018-01-16
申请号：US15423059
申请日：2017-02-02
申请人： HORIBA, Ltd.
发明人： Tetsuji Yamaguchi , Tetsuya Mori
IPC分类号： G01N15/02
CPC分类号： G01N15/0211 , G01N21/53 , G01N2015/0222 , G01N2015/025 , G01N2021/4707
摘要： Provided is a dynamic light scattering type particle size distribution measuring apparatus 100 capable of accurately measure the particle sizes of a sample obtained from slurry or the like. The dynamic light scattering type particle size distribution measuring apparatus 100 is configured to include: a filter member 6 that is interposed between any adjacent two of a light source 4, a cell 2, and a photodetector 5 and attenuates light passing therethrough; and an information processing device 8 that measures a particle size distribution multiple times with time and combines particle size distributions obtained at respective times of measurement to thereby calculate the particle size distribution of the whole of portions of the sample introduced at the respective times of measurement. In addition, the filter member 6 is also configured to be changeable to one having a different attenuation level at every time of measurement.
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公开(公告)号：US11499905B2
公开(公告)日：2022-11-15
申请号：US17287921
申请日：2019-10-29
申请人： HORIBA, Ltd.
摘要： An object of the present claimed invention is to improve cell cooling performance, keep a temperature of a dispersion medium constant, and improve measurement accuracy. The particle size distribution measuring device of this invention comprises a cell holding body 31 that holds a cell 2 housing a measurement sample and that is rotated by a motor 322, a case (C) having a housing space (S) for rotatably housing the cell holding body 31, and a cooling mechanism 8 for cooling the cell 2. The cooling mechanism 8 comprises a cooler 81, and a supply channel 82 that supplies a gas that has been cooled by the cooler 81 to the housing space (S).
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公开(公告)号：US11428616B2
公开(公告)日：2022-08-30
申请号：US17287831
申请日：2019-10-29
申请人： HORIBA, Ltd.
摘要： The present claimed invention is to facilitate cleaning work of a cell for a particle size distribution measuring device that measures a particle size distribution by means of a line start method, and comprises a cell 2 that houses a density gradient solution, a cell rotating mechanism 3 that rotates the cell 2 so that a centrifugal force is applied to the cell 2 from a smaller density gradient to a larger density gradient and a sample introducing mechanism 7 that introduces a measurement sample into the cell 2 that is rotated by the cell rotating mechanism 3, and is so configured that the cell 2 is detachable from a main body of the device.
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公开(公告)号：US11971339B2
公开(公告)日：2024-04-30
申请号：US17289108
申请日：2019-10-29
IPC分类号： G01N15/04
CPC分类号： G01N15/042 , G01N2015/045
摘要： A particle size distribution measurement device includes a cell holding body 31 that holds a measurement cell 2 containing a measurement sample and a dispersion medium and a reference cell 6 containing a reference sample and is rotated by a motor 322, and a cell discrimination mechanism 7 that discriminates the cells 2, 6 passing through a predetermined rotation position by using a magnetic force or electrostatic capacitance.
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公开(公告)号：US11415499B2
公开(公告)日：2022-08-16
申请号：US16461539
申请日：2017-10-06
申请人： HORIBA, LTD.
摘要： The particle size distribution measurement device irradiates light onto a sample of particles, then detects secondary light generated by this irradiation, and then calculates a particle size distribution of the particles based on the detection data, and includes a separate measurement data receiving unit that receives separate measurement data obtained by separately measuring particles having a specific particle size in a separate sample, and light intensity data showing a light intensity of the secondary light generated by the particles in the separate sample, and a distribution conversion unit that, based on the separate measurement data and on the light intensity data, converts the particle size distribution from a distribution in which the numbers of particles of each particle size contained in the sample being measured are shown in relative terms to a distribution in which the numbers of these particles are shown in absolute terms.
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