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公开(公告)号：US11268894B2
公开(公告)日：2022-03-08
申请号：US17133920
申请日：2020-12-24
Applicant: RION CO., LTD.
Inventor： Hiroaki Yaguchi , Yuki Yamakawa , Masaki Shimmura , Tomonobu Matsuda
IPC: G01N15/14
Abstract: A flow cell includes a body and a flow channel. The body is formed out of blocks made of an uniaxial crystal material and joined to one another. The flow channel is formed inside the body, so that the flow cell is configured to be used to measure particles passing through the flow channel based on reception of scattered light generated from the particles. A crystallographic c-axis in a predetermined part of the body is configured to being substantially perpendicular to both a receiving direction and a polarization direction of the scattered light.
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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
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.
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公开(公告)号：US11215551B2
公开(公告)日：2022-01-04
申请号：US14766578
申请日：2014-01-20
Applicant: RION CO., LTD.
Inventor： Kazuma Sekimoto
Abstract: A particle counting system includes a particle counting means and pre-stage irradiation means. The particle counting means counts particles existing in a fluid by irradiating the fluid containing target particles with light at a predetermined wavelength, separating selectively autofluorescence or phosphorescence emitted from the target particles by the radiated light, receiving the separated autofluorescence or phosphorescence, and determining that the target particles are the particles according to the received autofluorescence or phosphorescence. The pre-stage irradiation means irradiates the fluid with ultraviolet light in advance before the particle counting means irradiates the fluid with the light at the predetermined wavelength. The particle counting means includes a band-pass filter that allows light having a wavelength of 450 nm to 600 nm to pass therethrough.
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公开(公告)号：US11119027B2
公开(公告)日：2021-09-14
申请号：US16461199
申请日：2017-11-07
Applicant: RION Co., Ltd.
Inventor： Kazuma Sekimoto
Abstract: A microbial particle is accurately counted in distinction from a non-microbial particle. A preceding-stage irradiation section 2 irradiates a sample as fluid with ultraviolet light at a preceding stage of a microbial particle counter 1. The ultraviolet light is ultraviolet light having a deep ultraviolet region, the ultraviolet light increasing the fluorescence intensity of a first autofluorescence substance in the microbial particle. The microbial particle counter 1 measures light intensity in a first wavelength range including the fluorescence wavelength of the first autofluorescence substance. In addition, the microbial particle counter 1 measures light intensity in a specific second wavelength range. Further, the microbial particle counter 1 counts the microbial particle in distinction from a non-microbial particle in the fluid based on the measured light intensity in the first wavelength range and the measured light intensity in the specific second wavelength range.
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公开(公告)号：US11051097B2
公开(公告)日：2021-06-29
申请号：US17003443
申请日：2020-08-26
Applicant: RION Co., Ltd.
Inventor： Akihiro Soeta , Takashi Iwakura
Abstract: An installation structure of a vibrator includes elastic members formed of an elastic material, the elastic members being arranged between a housing of a listening device, and the vibrator accommodating an electromechanical transducer for transducing an electric signal into mechanical vibration. The vibrator is installed on the listening device such that a lower surface of the vibrator is disposed at a position facing an ear cartilage in a state where the listening device is worn on an ear, and a first mechanical impedance of the elastic members between the vibrator and the housing is set smaller, at a frequency of 200 Hz to 1000 Hz, than twice a second mechanical impedance, with which the vibrator is loaded, of the ear cartilage.
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Patent Agency Ranking
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.
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公开(公告)号：US20190267021A1
公开(公告)日：2019-08-29
申请号：US16279486
申请日：2019-02-19
Applicant: RION Co., Ltd.
Inventor： Masatoshi OSAWA , Masahiro SUNOHARA , Yoichi FUJISAKA , Yoko FUJISHIMA
IPC: G10L21/0208 , G10K15/08
Abstract: A dereverberation device includes an input instantaneous value calculation unit configured to calculate an input instantaneous value based on an input signal; a reverberation estimation unit configured to calculate a moving average of the input instantaneous value as a reverberation component; a gain calculation unit configured to calculate, with the input instantaneous value and the reverberation component, a first gain as a basic gain for the input signal; a gain suppression control unit configured to calculate, according to a ratio between the input instantaneous value and the reverberation component, a second gain changing within a range between a predetermined lower limit and a predetermined upper limit, thereby outputting a larger one of the first gain or the second gain as a third gain; and a gain processing unit configured to multiply the input signal by the third gain.
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公开(公告)号：US20190162645A1
公开(公告)日：2019-05-30
申请号：US16200511
申请日：2018-11-26
Applicant: RION Co., Ltd.
Inventor： Mitsuaki SAITOU , Masaki SHIMMURA , Tomonobu MATSUDA , Yuki YAMAKAWA
IPC: G01N15/14
CPC classification number: G01N15/1429 , G01N15/0211 , G01N15/1434 , G01N15/1459 , G01N2015/1454 , G01N2015/1486 , G01N2015/1493
Abstract: A particle counter provided with: a detector configured to receive interference light by scattered light and reference light with a light receiving element, and generate a detection signal corresponding to the interference light; a filter configured to perform, with respect to the detection signal generated by the detector, a filtering process for passing a frequency component corresponding to an intensity change of the interference light; a determination unit configured to determine, from a peak level of the detection signal before filtering and a peak level of the detection signal after filtering, whether the detection signal is due to a particle; and a counting unit configured to perform, if it is determined by the determination unit that the detection signal is due to the particle, particle counting based on the detection signal after filtering.
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公开(公告)号：US20190028818A1
公开(公告)日：2019-01-24
申请号：US16035903
申请日：2018-07-16
Applicant: RION Co., Ltd.
Inventor： Nobuhiko HIRUMA , Masahiro SUNOHARA
IPC: H04R25/00
CPC classification number: H04R25/453 , H04R3/02 , H04R25/505 , H04R2225/41
Abstract: Provided is a hearing aid including a receiver, a microphone, an adaptive filter estimating a feedback transfer function from the receiver to the microphone, a subtractor, a hearing aid processor, a first whitening filter, a second whitening filter having a whitening filter coefficient identical to that of the first whitening filter, a coefficient updater, and a controller controlling the adaptive filter and the first and second whitening filters. The controller updates and saves, as a stabilization coefficient, the coefficient of the adaptive filter in a condition in which the autocorrelation of the first signal is low, determines the presence or absence of a change in the feedback transfer function based on the coefficient of the adaptive filter and the stabilization coefficient, and performs, when it is determined that the feedback transfer function has changed, the control in order that effectiveness of whitening by the first and second whitening filters is reduced as compared to that when it is determined that the feedback transfer function does not change.
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公开(公告)号：US10094763B2
公开(公告)日：2018-10-09
申请号：US15681000
申请日：2017-08-18
Applicant: RION Co., Ltd.
Inventor： Kazuma Sekimoto
Abstract: A microviable particle counting system includes: a microviable particle counting instrument configured to detect autofluorescence of a microviable particle in a sample as fluid, thereby counting the microviable particle in the sample; and a former-stage irradiator provided at a former stage of the microviable particle counting instrument to irradiate the sample with ultraviolet light. The ultraviolet light contains first ultraviolet light having such a wavelength that a carbon-carbon covalent bond is disconnected, and the first ultraviolet light has a wavelength shorter than 200 nm.
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