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    Photoacoustic measurement device and method
    1.
    发明授权
    Photoacoustic measurement device and method 有权

    公开(公告)号：US11071461B2

    公开(公告)日：2021-07-27

    申请号：US15920697

    申请日：2018-03-14

    Applicant: FUJIFILM Corporation

    Inventor： Atsushi Hashimoto ,  Atsushi Osawa ,  Kaku Irisawa ,  Keiji Tsubota

    IPC: A61B5/00 ,  A61B8/00 ,  A61B8/14 ,  G01S7/52 ,  A61B8/08

    Abstract: An acoustic wave detector detects photoacoustic waves generated by absorbing measurement light emitted toward a subject, and reflected acoustic waves with respect to acoustic waves transmitted toward the subject. A preamplifier amplifies a detection signal output by the acoustic wave detector. A bypass unit is intended to output the detection signal without passing through the preamplifier. Controller causes the preamplifier to enter an operating state and selects a first path along which the detection signal is amplified by the preamplifier and then is input to the reception circuit as a signal path in a case where the photoacoustic waves are detected. The controller stops an amplification operation in the preamplifier and selects a second path along which the detection signal is input to the reception circuit via a bypass unit as the signal path in a case where reflected acoustic waves are detected.

    Laser apparatus
    2.
    发明授权
    Laser apparatus 有权

    公开(公告)号：US10305249B2

    公开(公告)日：2019-05-28

    申请号：US16043910

    申请日：2018-07-24

    Applicant: FUJIFILM Corporation

    Inventor： Kaku Irisawa ,  Tomoki Inoue ,  Atsushi Hashimoto

    IPC: H01S5/024 ,  G01N29/24 ,  H01S3/00 ,  H01S3/02 ,  H01S3/042 ,  H05K7/20 ,  H01S5/022

    Abstract: In a laser apparatus, transmission of vibration, which is generated in a portion that generates a cooling gas flow, to a laser unit is suppressed, and heat generated from the laser unit is efficiently dissipated. A laser unit is housed inside a box-shaped housing having a plurality of faces. A frame supports a laser unit with a first mount interposed therebetween inside the housing. The frame has a through-hole penetrating from one face side to the other face side. A blower fan generates a flow of cooling gas for cooling the laser unit. The blower fan is attached to, for example, a second housing so as to face the laser unit. The cooling gas moves through the through-hole of the frame between the blower fan and the laser unit.

    Photoacoustic measurement probe and probe unit and photoacoustic measurement apparatus including the same
    5.
    发明授权
    Photoacoustic measurement probe and probe unit and photoacoustic measurement apparatus including the same 有权

    公开(公告)号：US11103136B2

    公开(公告)日：2021-08-31

    申请号：US15919515

    申请日：2018-03-13

    Applicant: FUJIFILM Corporation

    Inventor： Atsushi Hashimoto ,  Kaku Irisawa ,  Atsushi Osawa

    IPC: A61B5/00 ,  A61B8/00 ,  A61B8/13

    Abstract: In a photoacoustic measurement probe including an acoustic wave detector and an amplifier for amplifying a detection signal of a photoacoustic wave and a probe unit and a photoacoustic measurement apparatus having such a probe, heat is efficiently dissipated from the probe.
    In a probe having an acoustic wave detector and an amplifier, there are provided a first heat conductive member that is in contact with a part of a side plate of a housing and the amplifier to transfer heat generated by the amplifier to the side plate and a second heat conductive member that is in contact with a part different from the part of the side plate and the acoustic wave detector to transfer heat generated by the acoustic wave detector to the side plate.

    Photoacoustic measurement probe and probe unit and photoacoustic measurement apparatus including the same
    9.
    发明授权
    Photoacoustic measurement probe and probe unit and photoacoustic measurement apparatus including the same 有权

    公开(公告)号：US11344204B2

    公开(公告)日：2022-05-31

    申请号：US15642907

    申请日：2017-07-06

    Applicant: FUJIFILM Corporation

    Inventor： Atsushi Osawa ,  Atsushi Hashimoto ,  Kaku Irisawa

    IPC: A61B5/00 ,  A61B8/13 ,  A61B5/02

    Abstract: A photoacoustic measurement probe and a probe unit capable of preventing generation of artifacts in a photoacoustic measurement apparatus are obtained. In a photoacoustic measurement probe having a light emitting unit that emits measurement light toward a subject, an acoustic wave detection element that detects an acoustic wave emitted from a portion of the subject that has received the measurement light, and a housing which has a surface facing the subject at the time of use and in which the light emitting unit and the acoustic wave detection element are housed, at least one slit that is opened to the housing surface and that extends from the housing surface toward the inside of the housing is provided between the light emitting unit and the acoustic wave detection element.

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