公开(公告)号：US09823190B2

公开(公告)日：2017-11-21

申请号：US14859780

申请日：2015-09-21

Applicant: RION CO., LTD.

Inventor： Takashi Minakami ,  Masaki Shimmura ,  Tomonobu Matsuda

IPC: G01N15/14 ,  G01N21/53 ,  G01N15/00 ,  G01N21/03 ,  G01N21/51

CPC classification number: G01N21/53 ,  G01N15/1459 ,  G01N2015/0053 ,  G01N2015/1486 ,  G01N2021/0392 ,  G01N2021/513

Abstract: A particle counter for chemical solution in this disclosure uses a flow cell through which a chemical solution including particles flows, a laser light, and a light-receiving element array. Scattered light from the particles passing through a detection region on an optical path of the laser light in the flow cell is condensed to the light-receiving element array. The laser light in the center of the detection region has an energy density of 3×108 mW/cm2 or more. Each of plural light-receiving elements (a) is larger in length and width than a spot diameter of the scattered light, and (b) receives the scattered light from a region with a size of 760 μm2 or less included in the detection region. The signal processing unit counts the particles passing through the detection region by use of a threshold corresponding to the smallest measurable particle size of 0.03 μm.

公开(公告)号：US11262284B2

公开(公告)日：2022-03-01

申请号：US16747286

申请日：2020-01-20

Applicant: RION Co., Ltd.

Inventor： Tomonobu Matsuda ,  Takashi Minakami ,  Daisuke Sakaue ,  Daisuke Shinozaki

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

Abstract: A particle counter includes: a multi-flow cell with flow passages arrayed in a first direction and having a section including a detection region, for detecting a particle, formed when the flow passage is irradiated with irradiation light; a light receiving optical system configured to receive emitted light generated from a particle contained in sample fluid flowing in the at least one flow passage and passing through the detection region; an optical axis moving unit configured to move an optical axis of the irradiation light and an optical axis of the emitted light in the first direction; and a counter configured to count the particle for each particle size based on an intensity of the emitted light.

公开(公告)号：US11009445B2

公开(公告)日：2021-05-18

申请号：US16749322

申请日：2020-01-22

Applicant: RION Co., Ltd.

Inventor： Tomonobu Matsuda ,  Takashi Minakami ,  Daisuke Sakaue ,  Daisuke Shinozaki

IPC: G01N15/14

Abstract: An in-fluid floating substance measurement flow cell includes: a main body having at least a predetermined portion made of a material having translucency; and a flow passage formed inside the main body, having both end openings at an outer surface of the main body in a substantially identical direction, and configured such that fluid flows in the flow passage. The flow passage has a predetermined section arranged between two opposing flat wall surfaces facing each other, and the predetermined portion includes the predetermined section.