会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明申请
    • MIRROR DEVICE
    • 镜子装置
    • US20120327493A1
    • 2012-12-27
    • US13430825
    • 2012-03-27
    • Akira KOIDENorio HOSAKA
    • Akira KOIDENorio HOSAKA
    • G02B26/10
    • G02B26/101G02B26/0841H04N9/3129
    • In a biaxial mirror device where beams for connecting a first movable frame to a second movable frame and the second movable frame to a fixed frame pass a center of the mirror along an axis, an actuator for moving the second movable frame is composed of two first and second actuators and in a state that rotational angles of the movable frames are zero, the first actuator permits the second movable frame to start rotation and when it reaches a specific rotational angle, the second actuator permits the second movable frame to rotate, thus a large deflection angle is obtained even by the dissonance drive.
    • 在用于将第一可移动框架连接到第二可移动框架的梁和用于固定框架的第二可移动框架的梁沿着轴线穿过反射镜的中心的双轴镜装置中,用于移动第二可移动框架的致动器由两个第一 和第二致动器,并且在可移动框架的旋转角度为零的状态下,第一致动器允许第二可移动框架开始旋转,并且当其达到特定旋转角度时,第二致动器允许第二可移动框架旋转,因此 即使通过不谐振驱动也能获得大的偏转角。
    • 4. 发明授权
    • Surface acoustic wave resonator
    • 表面声波谐振器
    • US4760359A
    • 1988-07-26
    • US763
    • 1987-01-06
    • Takashi ShibaNorio HosakaTakemitsu BumaJun Yamada
    • Takashi ShibaNorio HosakaTakemitsu BumaJun Yamada
    • H03H9/02H03H9/25
    • H03H9/0285H03H9/25
    • A surface acoustic wave resonator has two solid-type interdigital transducers and two grating reflectors arranged on a piezoelectric substrate or on a surface acoustic wave substrate which contains a piezoelectric material and the reflectors are arranged outside these transducers. If the electrode pitch of the interdigital transducers is suitably different from the pitch of grating of the reflectors, ripples caused by the triple transit echo at frequencies other than the peak frequency are deviated so as to lie outside the stop band of the reflectors, so that spurious responses are suppressed. In this case, the number of electrode pairs Ni of the interdigital transducers should satisfy a relation, Ni.gtoreq..pi./.epsilon., wherein .epsilon. denotes a characteristic mechanical impedance mismatch contribution on the surface of the electrode and on the free surface in the interdigital transducers, so that a peak caused by the trapping of energy in the interdigital transducers is brought into agreement with a peak caused by the triple transit echo to decrease the losses and to increase the Q value.
    • 表面声波谐振器具有两个固体型叉指式换能器和布置在压电基片上的两个光栅反射器或包含压电材料的表面声波基片,反射器设置在这些换能器之外。 如果叉指式换能器的电极间距适当地不同于反射器的光栅的间距,则在峰值频率以外的频率处由三次转接回波引起的波纹偏离,以便位于反射器的阻带之外,使得 杂散响应被抑制。 在这种情况下,叉指式换能器的电极对Ni的数量应满足关系式,其中,ε表示在电极表面上和叉指中的自由表面上的特征性机械阻抗失配贡献 换能器,使得由叉指式换能器中的能量捕获引起的峰值与由三通道回波引起的峰值相一致,以减少损耗并增加Q值。