Method of actuating MEMS switches
    1.
    发明授权
    Method of actuating MEMS switches 有权
    MEMS开关的方法

    公开(公告)号:US06388359B1

    公开(公告)日:2002-05-14

    申请号:US09517913

    申请日:2000-03-03

    IPC分类号: H01H5900

    摘要: A switching signal having multiple sequential pulses is applied to a MEMS switch. A first pulse moves the switch from a first switch position toward a second switch position. After a selected dwell period, a second pulse is applied to dampen ringing or overshoot of the movable portions of the switch. In a further embodiment, non-symmetrical switching signals are used to cycle the switch from the first state to the second state, and back to the first.

    摘要翻译: 具有多个连续脉冲的开关信号被施加到MEMS开关。 第一脉冲将开关从第一开关位置移动到第二开关位置。 在选定的停留时段之后,施加第二脉冲以阻止开关的可动部分的振铃或过冲。 在另一个实施例中,使用非对称切换信号将开关从第一状态循环到第二状态,并且返回到第一状态。

    Bi-stable electrostatic comb drive with automatic braking
    2.
    发明授权
    Bi-stable electrostatic comb drive with automatic braking 有权
    双稳态静电梳驱动带自动制动

    公开(公告)号:US06771001B2

    公开(公告)日:2004-08-03

    申请号:US09810825

    申请日:2001-03-16

    IPC分类号: H02N100

    CPC分类号: H02N1/008

    摘要: An electrostatic comb drive suitable for micro-electro-mechanical systems (“MEMS”) application uses shaped fingers to achieve bi-directional actuation from a unipolar actuation pulse. The finger shape also provides auto-braking of the movable member of the drive using a simple actuating pulse. In a further embodiment, an end stop inhibits overshoot and a back spring pushes the movable portion of the device back toward an operating position. In yet a further embodiment, a Vernier scale is provided on the movable portion of the drive relative to the fixed portion of the drive to indicate relative shift of these portions after the device is fabricated.

    摘要翻译: 适用于微电子机械系统(“MEMS”)应用的静电梳驱动使用成形指状物从单极致动脉冲实现双向致动。 手指形状还使用简单的致动脉冲来提供驱动器的可移动部件的自动制动。 在另一个实施例中,端部止挡件阻止过冲,并且后弹簧将装置的可移动部分推回到操作位置。 在又一个实施例中,在驱动器的可移动部分上相对于驱动器的固定部分设置游标,以指示在制造装置之后这些部分的相对移动。

    Automated verification systems and methods for use with optical interference devices
    4.
    发明授权
    Automated verification systems and methods for use with optical interference devices 有权
    用于光干扰设备的自动验证系统和方法

    公开(公告)号:US06473165B1

    公开(公告)日:2002-10-29

    申请号:US09489453

    申请日:2000-01-21

    IPC分类号: G06K974

    摘要: An automated verification system for authenticating an object having an optical security feature includes an optical system, a transport staging apparatus, and an analyzing device. The optical system includes one or more light sources that are capable of generating either narrowband or broadband light beams. The transport staging apparatus cooperates with the light sources and is configured to position the object such that one or more of the light beams strike a portion of the object where the security feature should be located. The analyzing device receives the light beams reflected or transmitted from the object and is adapted to analyze the optical characteristics of the light beams at varying angles and/or wavelengths to verify the authenticity of the object.

    摘要翻译: 用于认证具有光学安全特征的对象的自动验证系统包括光学系统,传输分段设备和分析设备。 光学系统包括能够产生窄带或宽带光束的一个或多个光源。 运输分段设备与光源配合,并且被配置成定位物体,使得一个或多个光束照射安全特征应位于物体的一部分。 分析装置接收从物体反射或透射的光束,并且适于以变化的角度和/或波长分析光束的光学特性以验证物体的真实性。