公开(公告)号：US06404108B1

公开(公告)日：2002-06-11

申请号：US09219367

申请日：1998-12-23

申请人： Masanori Yachi ,  Noboru Wakatsuki ,  Sumio Yamada

发明人： Masanori Yachi ,  Noboru Wakatsuki ,  Sumio Yamada

IPC分类号： H01L4108

CPC分类号： H01L41/042 ,  F04D33/00 ,  H01H57/00 ,  H01L41/0825

摘要： A piezoelectric actuator includes a main driver electrode 4 and a sensor electrode 5. A feedback signal is generated from the sensor electrode 5 in order to eliminate a primary vibration mode due to a primary resonance frequency. The main driver electrode extends to a fixture portion of the actuator, the fixture portion being fitted into a support member 11. The extending portion of the main driver electrode eliminates the electromechanical coupling against a secondary vibration mode due to a second resonance frequency. Features of the piezoelectric actuator suppress the resonance phenomenon, thus improving the response characteristics of the actuator.

摘要翻译： 压电致动器包括主驱动电极4和传感器电极5.从传感器电极5产生反馈信号，以消除由初级共振频率引起的主振动模式。 主驱动器电极延伸到致动器的固定部分，固定部分装配到支撑构件11中。由于第二共振频率，主驱动器电极的延伸部分消除了针对二次振动模式的机电耦合。 压电致动器的特征抑制共振现象，从而提高致动器的响应特性。

公开(公告)号：US5424602A

公开(公告)日：1995-06-13

申请号：US111741

申请日：1993-08-25

申请人： Masuji Sato ,  Noboru Wakatsuki ,  Masanori Ueda ,  Hiroshi Hasegawa

发明人： Masuji Sato ,  Noboru Wakatsuki ,  Masanori Ueda ,  Hiroshi Hasegawa

IPC分类号： H01L41/107 ,  H01L41/08

CPC分类号： H01L41/107

摘要： A piezoelectric transformer comprises a piezoelectric substrate extending in a first direction, a first electrode structure provided on the substrate for exciting an elastic wave propagating through the substrate in the first direction as a result of the piezoelectric transverse effect, and a second electrode structure provided on the substrate for converting the elastic wave to an electric voltage, wherein the first electrode group occupies a first area on the substrate while the second electrode group occupies a second area on the substrate.

摘要翻译： 压电变压器包括沿第一方向延伸的压电基片，设置在基板上的第一电极结构，用于激发由于压电横向效应而在第一方向上传播通过基板的弹性波;以及第二电极结构， 用于将弹性波转换成电压的基板，其中第一电极组占据基板上的第一区域，而第二电极组占据基板上的第二区域。

公开(公告)号：US5055786A

公开(公告)日：1991-10-08

申请号：US494669

申请日：1990-03-16

申请人： Noboru Wakatsuki ,  Shigemi Kurashima ,  Nobuyoshi Shimizu ,  Michiko Endoh ,  Akira Tanaka

发明人： Noboru Wakatsuki ,  Shigemi Kurashima ,  Nobuyoshi Shimizu ,  Michiko Endoh ,  Akira Tanaka

IPC分类号： G01P15/08 ,  G01P15/105

CPC分类号： G01P15/105 ,  G01P15/0802 ,  G01P2015/0817 ,  Y10S73/03

摘要： A magnetic field sensor for an acceleration sensor including a cantilever beam having a free end to which a permanent magnet is attached. A pair of the magnetic sensors, each consisting of a barber-pole type magnetoresistive sensing element, are arranged opposite to and symmetrically. The cantilever is bent and the magnet is moved according to an acceleration, which is detected as outputs from the magnetoresistive sensing elements.

公开(公告)号：US4779166A

公开(公告)日：1988-10-18

申请号：US129847

申请日：1987-12-08

申请人： Akira Tanaka ,  Shinpei Nagatani ,  Hisashi Sawada ,  Eietsu Takahashi ,  Noboru Wakatsuki ,  Takehisa Takoshima ,  Fumiaki Yamada

发明人： Akira Tanaka ,  Shinpei Nagatani ,  Hisashi Sawada ,  Eietsu Takahashi ,  Noboru Wakatsuki ,  Takehisa Takoshima ,  Fumiaki Yamada

IPC分类号： F21V8/00 ,  F21V7/04

CPC分类号： G02B6/0021 ,  G02B6/0036 ,  G02B6/0041 ,  G02B6/0061 ,  G02B6/0073 ,  G02B6/009

摘要： An illuminating apparatus which comprises a plane board composed of a transparent resin having an organic fluorescent dye incorporated therein and a light-reflecting member arranged on at least a part of the back surface of the plane board, wherein a light incident from at least a part of the end face of the plane board is emitted from at least a part of the surface of the plane board.

公开(公告)号：US4350963A

公开(公告)日：1982-09-21

申请号：US219948

申请日：1980-12-24

申请人： Hisao Iwamoto ,  Noboru Wakatsuki

发明人： Hisao Iwamoto ,  Noboru Wakatsuki

IPC分类号： H03H9/25 ,  H03H3/08 ,  H03H9/02 ,  H03H9/145 ,  H03H9/64 ,  H03H9/76 ,  H03H9/42

CPC分类号： H03H9/02771 ,  H03H9/02842 ,  H03H9/14573 ,  H03H9/02866 ,  H03H9/14547

摘要： A surface acoustic wave device comprises a piezoelectric substrate, and an input transducer and an output transducer formed on the substrate. Dummy transducers are formed on the substrate and arranged to extend from the ends of the input and output transducers toward the ends of the substrate. The dummy transducers individually include electrodes spaced at the same pitch as the electrode pitch in the input and output transducers. Accordingly, there is no occurrence of reflections of the surface acoustic wave at the ends of the input and output transducers.

摘要翻译： 表面声波装置包括压电基板，以及形成在基板上的输入换能器和输出换能器。 虚拟换能器形成在基板上并且布置成从输入和输出换能器的端部朝向基板的端部延伸。 虚拟换能器单独地包括以与输入和输出换能器中的电极间距相同的间距分开的电极。 因此，在输入和输出换能器的端部处不存在表面声波的反射。

公开(公告)号：US4342011A

公开(公告)日：1982-07-27

申请号：US190645

申请日：1980-09-25

申请人： Hisao Iwamoto ,  Noboru Wakatsuki

发明人： Hisao Iwamoto ,  Noboru Wakatsuki

IPC分类号： H03H9/145 ,  H03H3/08 ,  H03H9/02 ,  H03H9/25 ,  H03H9/42 ,  H03H9/64 ,  H03H9/66

CPC分类号： H03H9/0285 ,  H03H9/02795 ,  H03H9/02992 ,  H03H9/1452

摘要： A surface acoustic wave device comprising a piezoelectric substrate, an input transducer and an output transducer arranged diagonally to each other. A multistrip coupler is interposed between the input and output transducers. A reflecting transducer is placed opposite to the input transducer with the multistrip coupler therebetween. The multistrip coupler includes an adjusted number of conductors. The reflecting transducer includes weighted electrodes, and means for adjusting phase difference, whereby the surface acoustic waves reflected by the output transducer and the reflecting transducer are cancelled by each other. Accordingly, triple transit echo (TTE) can be suppressed without use of external variable resistors and inductors.

摘要翻译： 一种声表面波装置，包括压电基板，输入换能器和彼此对角布置的输出换能器。 输入和输出换能器之间插入一个多段耦合器。 反射换能器与输入换能器相对放置，其间具有多通耦合器。 多段耦合器包括调节数量的导体。 反射换能器包括加权电极和用于调节相位差的装置，由此由输出换能器和反射换能器反射的表面声波彼此抵消。 因此，可以抑制三通道回波（TTE），而不使用外部可变电阻器和电感器。