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.