Ultrasound unit and ultrasound endoscope

    公开(公告)号:US10098612B2

    公开(公告)日:2018-10-16

    申请号:US14629588

    申请日:2015-02-24

    Abstract: An ultrasound unit includes: ultrasound elements each including a plurality of ultrasound cells formed on a substrate including a semiconductor, the plurality of ultrasound cells each including an upper electrode having a ground potential and a lower electrode to which a drive signal is applied, the upper electrode and the lower electrode being arranged facing each other via a cavity and thereby forming a first capacitor; a package member in which the plurality of ultrasound elements are disposed, the package member having a ground potential; and an insulation member disposed between the package member and each of the ultrasound elements. A second capacitor is formed as a result of the insulation member serving as a gap, and a capacity of a third capacitor serially connected to the second capacitor is smaller than a capacity of the second capacitor.

    ENDOSCOPE IMAGING UNIT AND ENDOSCOPE
    2.
    发明公开

    公开(公告)号:US20230418045A1

    公开(公告)日:2023-12-28

    申请号:US18243471

    申请日:2023-09-07

    CPC classification number: G02B23/2484 G02B23/243

    Abstract: An endoscope imaging unit includes: an objective lens including a first lens and a second lens; an imaging element configured to capture an image formed by the objective lens; a first lens frame configured to hold the first lens, the first lens frame including a lens barrel that holds the first lens and a flange portion that extends outward from an outer peripheral portion of the lens barrel; a second lens frame that is fixed to the first lens frame and holds the second lens; and a holder that accommodates at least part of the first lens frame and the second lens frame therein and holds the outer peripheral surface of the flange portion of the first lens frame; wherein the flange portion is fixed to the holder on a side surface thereof in an extending direction.

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