公开(公告)号：US20210348999A1

公开(公告)日：2021-11-11

申请号：US17276847

申请日：2019-09-30

申请人： NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY ,  RION Co., Ltd. ,  Kioxia Corporation

发明人： Haruhisa KATO ,  Yusuke MATSUURA ,  Ayako NAKAMURA ,  Kaoru KONDO ,  Takuya TABUCHI ,  Hiroshi TOMITA ,  Hidekazu HAYASHI

IPC分类号： G01N15/02 ,  G06T7/60 ,  G06T7/20 ,  G06T7/80

摘要： For an easy calibration using calibration particles, provided is a measuring device to capture images of target objects. An image analyzer acquires multiple images obtained at a predetermined time interval, (a) specifies the mean-square displacement of a bright point of a calibration particle based on the displacement of the bright point of the calibration particle in the multiple images in a calibration mode, and (b) specifies the mean-square displacement of a bright point of the target particle based on the displacement of the bright point of the target particle in the multiple images in a measurement mode. A particle size analyzer (c) derives the particle size of the target particle from the mean-square displacement of the bright point of the target particle based on the mean-square displacement of the bright point of the calibration particle and the particle size of the calibration particle in an analysis mode.

公开(公告)号：US20200284714A1

公开(公告)日：2020-09-10

申请号：US16807459

申请日：2020-03-03

申请人： Kioxia Corporation ,  RION Co., Ltd.

发明人： Hiroshi TOMITA ,  Hidekazu HAYASHI ,  Eishi SHIOBARA ,  Kaoru KONDO ,  Takuya TABUCHI ,  Kazuna BANDO ,  Sota KONDO

IPC分类号： G01N15/14 ,  G01N15/02 ,  G01N21/53

摘要： According to one embodiment, a particle measuring method is disclosed. The method includes irradiating a detection liquid with light. The detection liquid contains methyl salicylate. The method further includes converting scattered light from the detection liquid into an electric signal by using photoelectric conversion after irradiating the detection liquid with the light. The method further includes performing a particle measurement on the detection liquid by using the electric signal.

公开(公告)号：US20220364970A1

公开(公告)日：2022-11-17

申请号：US17642920

申请日：2021-03-03

申请人： RION CO., LTD.

发明人： Kazuna BANDO ,  Kaoru KONDO ,  Takuya TABUCHI ,  Sota KONDO

IPC分类号： G01N15/02

摘要： A flow passage is irradiated with irradiation light, and light scattered from a particle contained in a sample passing through a detection region that is formed in a prescribed section is condensed at a position obtained by extending the prescribed section in a flow direction of the sample and captured at a prescribed frame rate. Then movement amount of the particle due to Brownian motion in directions perpendicular to the flow direction on the basis of captured plural frame images. Furthermore, a particle size of the particle is determined by correcting the movement amount using correction values that were obtained in advance corresponding to each of defocus positions for correcting errors of movement amount in the images caused by magnification.

公开(公告)号：US20220364971A1

公开(公告)日：2022-11-17

申请号：US17642940

申请日：2020-12-17

申请人： RION CO., LTD.

发明人： Kaoru KONDO ,  Kazuna BANDO ,  Takuya TABUCHI ,  Sota KONDO

IPC分类号： G01N15/02 ,  G01N21/05

摘要： Provided is a particle measurement device in which irradiation light emitted by a light source is expanded by an expander in a shape satisfying the requirements of a diffractive optical element, converted into parallel light, and made to enter the diffractive optical element. The diffractive optical element shapes the irradiation light entering therein into a flat top beam in which the cross section in the focal position thereof has an elongate rectangle shape. The intensity distribution of light can be made substantially uniform in a detection area formed by the shaped irradiation light.

公开(公告)号：US20140285802A1

公开(公告)日：2014-09-25

申请号：US14072331

申请日：2013-11-05

申请人： Rion Co., Ltd.

发明人： Masaki SHIMMURA ,  Takehiro IMAI ,  Takuya TABUCHI

IPC分类号： G01N15/02

CPC分类号： G01N15/0211 ,  G01N15/1429 ,  G01N15/1459 ,  G01N2015/0238 ,  G01N2015/1486

摘要： [Subject]To offer a light scattering particle counter that improves the SN ratio by sufficiently attenuating the high frequency noise component while suppressing the attenuation of the signal component.[Means for Solving the Problems]A light scattering particle counter which irradiates a laser beam La to a sample fluid and forms a particle detection area 13, a multi-channel light detecting element receives scattered light Ls from a particle passing through the particle detection area and detects the particle, the time constants τc, τm, τe of the low pass filters F1, F2, F3, F4, F5 are set depending on the beam diameter of the laser beam La and the flow velocity of the fluid which flows through each divided area.

摘要翻译： [主题]提供一种光散射粒子计数器，通过在抑制信号分量的衰减的同时充分衰减高频噪声分量来提高SN比。 解决问题的手段一种将激光束La照射到样品流体并形成粒子检测区域13的光散射粒子计数器，多通道光检测元件从通过粒子检测区域的粒子接收散射光Ls 并检测出粒子，根据激光束La的光束直径和流过各个光束的流体的流速，设定低通滤光片F1，F2，F3，F4，F5的时间常数τc，τm，τe 分区。