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公开(公告)号：US20210302723A1
公开(公告)日：2021-09-30
申请号：US17320283
申请日：2021-05-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Katsumi FUJIMOTO , Takahide NAKADOI
Abstract: A vibration device includes a light transmissive body, a first cylindrical body, a plate-shaped spring portion, a second cylindrical body, and a vibrating body. The light transmissive body includes a main body portion on an inner side of a portion supported by the first cylindrical body, and a protruding portion extending from the main body portion toward an outer circumference of the light transmissive body and protruding outward more than a portion supported by the first cylindrical body. A ratio between an equivalent mass calculated from a moment of inertia of the protruding portion and a weight of the main body portion is about 0.8 to about 1.2, and a resonant frequency of the light transmissive body is larger than a resonant frequency of the spring portion.
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公开(公告)号：US20200144939A1
公开(公告)日：2020-05-07
申请号：US16733258
申请日：2020-01-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Katsumi FUJIMOTO , Chikahiro HORIGUCHI , Yasuhiro KURATANI , Satoshi ICHIHARA , Kiyoyuki MIYAZAWA
Abstract: A method of driving a vibration device including a light-transmitting body and a piezoelectric element connected to the light-transmitting body is provided to vibrate the light-transmitting body. The method atomizes and removes liquid drops sticking to the light-transmitting body. A driving voltage to vibrate the piezoelectric element is swept at a sweep speed in a range of about 1 Hz to about 50 Hz so as to sweep a vibration frequency of the piezoelectric element to cover a frequency range including both of a resonant frequency of the light-transmitting body without liquid drops sticking to the light-transmitting body and a resonant frequency of the light-transmitting body with the liquid drops sticking to the light-transmitting body.
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公开(公告)号：US20180239218A1
公开(公告)日：2018-08-23
申请号：US15960666
申请日：2018-04-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shinsuke IKEUCHI , Katsumi FUJIMOTO , Masanobu NOMURA , Kenji NISHIYAMA
CPC classification number: G03B5/00 , G02B27/0006 , G03B17/02 , G03B17/08 , G03B2205/0061 , H02N2/002 , H04N5/22521 , H04N5/2253 , H04N5/23216 , H04N5/23287 , H04N5/23296
Abstract: A vibrating device includes a tubular vibrating body and a lens cover coupled to a first surface of the tubular vibrating body. The tubular vibrating body includes a tubular member and piezoelectric vibrators. The lens cover includes a mode changing coupler and a light transmitting body unit disposed in front of a lens of a camera. The mode changing coupler includes a thin portion having a thickness smaller than a thickness of the tubular member.
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公开(公告)号：US20140090470A1
公开(公告)日：2014-04-03
申请号：US14100100
申请日：2013-12-09
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Katsumi FUJIMOTO , Toshimaro YONEDA , Takuo HADA , Hideya HORIUCHI
IPC: G01C19/56
CPC classification number: G01P9/04 , G01C19/5684
Abstract: A vibrator in a vibrating gyroscope includes a circular annular portion, a rectangular annular portion, and joining portions. The rectangular annular portion is disposed adjacent to an outer side of the circular annular portion. The joining portions join the circular annular portion and the rectangular annular portion. The rectangular annular portion includes linear beam portions. The joining portions join the circular annular portion and the center portions of the beam portions to each other.
Abstract translation: 振动陀螺仪中的振动器包括圆形环形部分，矩形环形部分和接合部分。 矩形环形部分邻近圆形环形部分的外侧设置。 接合部分连接圆形环形部分和矩形环形部分。 矩形环形部分包括直线梁部分。 接合部分将梁部分的圆形环形部分和中心部分彼此接合。
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公开(公告)号：US20210154701A1
公开(公告)日：2021-05-27
申请号：US17137503
申请日：2020-12-30
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Katsumi FUJIMOTO , Yuuki ISHII , Hitoshi SAKAGUCHI
Abstract: A vibration device includes a protective cover that transmits light with a predetermined wavelength, a first cylindrical body that holds the protective cover at one end, a plate-shaped plate spring that supports the other end of the first cylindrical body, a second cylindrical body that supports, at one end, a portion of the plate spring in an outer side portion of a portion that supports the first cylindrical body, and a plurality of piezoelectric elements on side surfaces of the second cylindrical body and that vibrates in a direction perpendicular to a penetrating direction of the second cylindrical body.
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Patent Agency Ranking
公开(公告)号：US20200379320A1
公开(公告)日：2020-12-03
申请号：US16999105
申请日：2020-08-21
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Katsumi FUJIMOTO , Kenji NISHIYAMA , Yasuhiro KURATANI
Abstract: A vibration unit includes a light transmitting member including at least a portion of a detection region of an imaging element, and a vibration element including a vibrating body coupled to the light transmitting member. The light transmitting member includes a central region and a peripheral region located around the central region. The light transmitting member includes a hydrophilic film in the peripheral region thereof.
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公开(公告)号：US20200213495A1
公开(公告)日：2020-07-02
申请号：US16817679
申请日：2020-03-13
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Katsumi FUJIMOTO , Hitoshi SAKAGUCHI
Abstract: A vibrating device includes a dome-shaped cover, a cylindrical or substantially cylindrical vibrating body, and a piezoelectric element. The dome-shaped cover is disposed so as to include a detection field of an optical detector element, and the cylindrical or substantially cylindrical vibrating body is fixed to the cover. The piezoelectric element is fixed to the vibrating body and vibrates the cover via the vibrating body. The vibrating body includes a cylinder portion, a first connection portion connected to a first end portion of the cylinder portion, a first ring-shaped portion connected to the first connection portion at a position near the cover, a second connection portion connected to a second end portion of the cylinder portion, and a second ring-shaped portion connected to the second connection portion at a position opposite to a surface to which the cylinder portion is connected.
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公开(公告)号：US20200168785A1
公开(公告)日：2020-05-28
申请号：US16777925
申请日：2020-01-31
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shinsuke IKEUCHI , Tetsuya KIMURA , Katsumi FUJIMOTO , Yutaka KISHIMOTO , Fumiya KUROKAWA , Yuzo KISHI
IPC: H01L41/047 , H01L41/297 , H01L41/08 , H01L41/09 , H01L41/083 , H01L41/053
Abstract: A piezoelectric device includes a piezoelectric body at least a portion of which can bend and vibrate, an upper electrode on an upper surface of the piezoelectric body and in which distortion of a crystal lattice is reduced as a distance from the upper surface of the piezoelectric body increases, a lower electrode on a lower surface of the piezoelectric body and in which distortion of a crystal lattice is reduced as a distance from the upper surface of the piezoelectric body increases, and a support substrate below the piezoelectric body, in which a recess extending from a lower surface of the support substrate toward the lower surface of the piezoelectric device is provided.
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公开(公告)号：US20200038914A1
公开(公告)日：2020-02-06
申请号：US16597871
申请日：2019-10-10
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Katsumi FUJIMOTO , Chikahiro HORIGUCHI , Kenji NISHIYAMA , Yasuhiro KURATANI , Shinichiro ICHIGUCHI
IPC: B06B1/06
Abstract: A vibration device includes a light-transmitting body that is located on a subject side of an imaging element, a cylindrical body that includes a first end portion, a second end portion on the opposite side from the first end portion, and an outer surface and an inner surface that connect the first end portion and the second end portion to each other, the cylindrical body being connected to the light-transmitting body and holding the light-transmitting body on the first end portion side thereof, and a piezoelectric element provided along a circumferential direction of the cylindrical body and that torsionally vibrates the cylindrical body.
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公开(公告)号：US20150013456A1
公开(公告)日：2015-01-15
申请号：US14499324
申请日：2014-09-29
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takuo HADA , Katsumi FUJIMOTO , Hideya HORIUCHI , Toshimaro YONEDA
CPC classification number: G01P15/10 , G01P15/09 , G01P15/097 , G01P2015/0828
Abstract: An acceleration sensor includes a fixation member, a weight member including a plate with two opposing sides parallel or substantially parallel to an X-direction and two opposing sides parallel to a Y-axis direction in a plan view, the weight member including a cutout extending in a direction about 45° relative to the X and Y axis directions, a vibrating beam linearly extending in the direction about 45° relative to the X and Y axis directions in the plan view, and one end portion is connected to the fixation member and the other end portion is connected to the weight member, the vibrating beam is partly arranged within the cutout and supporting the weight member to be displaceable in a Z-axis direction, a driver disposed on the vibrating beam and vibrating the vibrating beam, and a detector disposed on the vibrating beam and outputting a detection signal that is changed depending on deformation of the vibrating beam.
Abstract translation: 加速度传感器包括固定构件，配重构件，其包括具有平行于或基本上平行于X方向的两个相对侧的平板和平行于Y轴方向平行的两个相对侧的板，所述配重构件包括： 在相对于X和Y轴方向大约45°的方向上，在俯视图中相对于X和Y轴方向在大约45°的方向上线性地延伸的振动束，并且一个端部连接到固定构件， 所述另一端部与所述配重构件连接，所述振动梁部分地设置在所述切口内并且支撑所述配重构件以在Z轴方向上移动，所述振动梁设置在所述振动梁上并使所述振动梁振动， 检测器设置在振动束上并输出根据振动束的变形而改变的检测信号。
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