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公开(公告)号：EP4123289A1
公开(公告)日：2023-01-25
申请号：EP21770643.1
申请日：2021-03-03
申请人： RION Co., Ltd.
发明人： BANDO, Kazuna , KONDO, Kaoru , TABUCHI, Takuya , KONDO, Sota
摘要： In the present invention, irradiation light is radiated to a flow channel, and scattered light from particles included in a material passing through a detection region formed in a predetermined section is condensed at a position virtually extended in the flow direction of a sample and imaged at a predetermined frame rate. An amount of movement in the direction perpendicular to the flow direction of the particles due to Brownian motion is then calculated on the basis of a plurality of frame images. In order to correct an error in the amount of movement on an image, caused by magnification in a defocus position, the amount of movement is corrected using a correction value determined in advance, and the diameter of the particles is specified.
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公开(公告)号：EP4083604A1
公开(公告)日：2022-11-02
申请号：EP20906454.2
申请日：2020-12-17
申请人： RION Co., Ltd.
发明人： KONDO, Kaoru , BANDO, Kazuna , TABUCHI, Takuya , KONDO, Sota
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.
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