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公开(公告)号：US5055786A
公开(公告)日：1991-10-08
申请号：US494669
申请日：1990-03-16
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.
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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
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.
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33.发明授权Piezoelectric resonator chip and trimming method for adjusting the frequency thereof 失效压电谐振器芯片和调整其频率的修整方法
公开(公告)号：US4468582A
公开(公告)日：1984-08-28
申请号：US486532
申请日：1983-04-19
摘要： A piezoelectric resonator chip which includes a piezoelectric chip plate and a pair of electrode patterns which is formed on the opposite surfaces of the piezoelectric chip plate, the electrode patterns face each other through the piezoelectric chip plate. At least one of the electrode patterns has an adjuster pattern which includes a narrow cutting pattern and a separation pattern which is connected to the electrode pattern through the cutting pattern and which faces the other electrode pattern.
摘要翻译： 一种压电谐振器芯片，其包括形成在压电片片的相对表面上的压电片片和一对电极图案，电极图案通过压电片片彼此面对。 电极图案中的至少一个具有包括窄切割图案的调节器图案和通过切割图案连接到电极图案并且面对另一个电极图案的分离图案。
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公开(公告)号：US4454444A
公开(公告)日：1984-06-12
申请号：US467810
申请日：1983-02-18
CPC分类号： H03H9/02031 , H03H9/02157 , H03H9/177
摘要： A piezoelectric resonator which resonates in thickness shear mode. The piezoelectric resonator includes a strip shaped resonance chip made of an X-cut plate of lithium tantalate crystal and having a rectangular cross-section. Electrodes are formed at the center portion with respect to the longitudinal direction of the resonance chip on each of two X-plane surfaces. The width of the electrodes is equal to the width of the resonance chip. The longitudinal direction of the resonance chip inclines with respect to the Y-axis by an angle of 50.degree..+-.2' in the clockwise direction in the X-plane so as to make the longitudinal direction of the resonance chip coincide with the displacement direction of primary oscillation of the crystal. Optimal ratios of the dimensions of the resonance chip and terminal connectors at the ends of the resonance chip are given to reduce spurious response. The temperature characteristic is optimized by selecting rotation angles about the Y-and Z-axes in relation to the amount of trapped energy.
摘要翻译： 一种在厚度剪切模式下谐振的压电谐振器。 压电谐振器包括由钽酸锂晶体的X切割板制成并具有矩形横截面的带状共振芯片。 在两个X平面中的每一个上，相对于谐振芯片的纵向的中心部形成电极。 电极的宽度等于谐振芯片的宽度。 谐振芯片的纵向方向在X平面中沿着顺时针方向相对于Y轴倾斜50度+/- 2'的角度，以使谐振芯片的纵向方向与位移一致 晶体主振荡方向。 谐振芯片端部的谐振芯片和端子连接器的尺寸的最佳比例被给出以减少杂散响应。 通过相对于被捕获能量的量选择关于Y轴和Z轴的旋转角来优化温度特性。
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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
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。
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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
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。
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