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    • 1. 发明授权
    • Boundary acoustic wave device
    • 边界声波装置
    • US08436510B2
    • 2013-05-07
    • US12913847
    • 2010-10-28
    • Takashi YamaneTakeshi Nakao
    • Takashi YamaneTakeshi Nakao
    • H01L41/083
    • H01L41/18H03H9/0222H03H9/02559H03H9/02574
    • A boundary acoustic wave device includes a piezoelectric substrate made of single-crystalline LiTaO3, a first medium layer disposed on the piezoelectric substrate and made of a dielectric, a second medium layer disposed on the first medium layer and made of a dielectric having a sound velocity different from that of the first medium layer, and at least one interdigital electrode disposed at the boundary between the piezoelectric substrate and the first medium layer. The sound velocity of the first medium layer is less than the sound velocity of LiTaO3. The sound velocity of the second medium layer is greater than the sound velocity of LiTaO3. The inequality (h/λ)×a≦0.05 is satisfied, where H is the thickness of the first medium layer, h is the thickness of the interdigital electrode, λ is the period of electrode fingers of the interdigital electrode, and a is the ratio of the density of a metal of the interdigital electrode to the density of Au.
    • 声界面波装置包括由单晶LiTaO 3构成的压电基板,设在压电基板上的第一介质层,由电介质构成,第二介质层设置在第一介质层上,由具有声速 与第一介质层的不同,以及设置在压电基板和第一介质层之间的边界处的至少一个叉指电极。 第一介质层的声速小于LiTaO3的声速。 第二介质层的声速大于LiTaO3的声速。 满足不等式(h/lambda),a@0.05),其中H是第一介质层的厚度,h是叉指电极的厚度,λ是叉指电极的电极指的周期,a是 指数电极的金属密度与Au的密度之比。
    • 5. 发明申请
    • LD MODULE
    • US20090238231A1
    • 2009-09-24
    • US12403065
    • 2009-03-12
    • TAKASHI YAMANE
    • TAKASHI YAMANE
    • H01S5/026
    • H01S5/06804H01S5/02248H01S5/02284H01S5/0687
    • The present invention is to provide an LD module that can detect a wavelength fluctuation with a simple configuration and can reduce its size and prices. The LD module includes a double-sided light-emitting LD element for emitting an output light and a backward light in both forward and backward directions, a reference LD element whose temperature dependence of an oscillation wavelength is different from that of the double-sided light-emitting LD element, and a PD for receiving a multiplexed wave of the backward light of the double-sided light-emitting LD element and an output light of the reference LD element and detecting a beat component generated by the multiplexing.
    • 本发明是提供一种LD模块,其能够以简单的配置来检测波长波动并且可以减小其尺寸和价格。 LD模块包括用于在前后方向上发射输出光和反向光的双面发光LD元件,其振荡波长的温度依赖性与双面光的温度依赖性不同的基准LD元件 用于接收双面发光LD元件的反射光的多路复用波的PD和参考LD元件的输出光,并检测由多路复用产生的拍子分量。
    • 8. 发明申请
    • Mass flow meter
    • 质量流量计
    • US20070193371A1
    • 2007-08-23
    • US11707050
    • 2007-02-16
    • Takashi YamaneRyo Kosaka
    • Takashi YamaneRyo Kosaka
    • G01F1/80
    • G01F1/80G01F1/206
    • Strain gauges A, B for a bending portion cross each other and are stuck to a strain gauge sticking portion 7 for a bending portion located in a portion applying centrifugal force or centripetal force of a fluid thereto in a bending portion 4 in a bending circular tube 1 formed by bending a tube circulating the fluid therein. Further, strain gauges C, D for compensating static pressure and temperature cross each other and are stuck to a strain gauge sticking portion 11 for a straight tube portion located in a straight tube portion 8 connected to the bending portion 4 in the bending circular tube 1. Detecting signals of strain gauges A, B for a bending portion and strain gauges C, D for compensation are guided to an opposite position of a bridge circuit 12.
    • 用于弯曲部分的应变计A,B彼此交叉并且粘附到用于弯曲部分7的应变计粘贴部分7,弯曲部分位于在弯曲圆管中的弯曲部分4中施加离心力或流体向心力的部分 1通过弯曲在其中循环流体的管而形成。 此外,用于补偿静压和温度的应变计C,D彼此交叉并粘附在位于弯曲圆管1中与弯曲部分4连接的直管部分8中的直管部分的应变计粘贴部分11上 。 用于弯曲部分的应变仪A,B的检测信号和用于补偿的应变仪C,D被引导到桥接电路12的相对位置。