LIQUID CRYSTAL POLARIZATION ROTATOR AND METHOD OF USING SAME
    41.
    发明申请
    LIQUID CRYSTAL POLARIZATION ROTATOR AND METHOD OF USING SAME 有权
    液晶极化旋转器及其使用方法

    公开(公告)号:US20050044742A1

    公开(公告)日:2005-03-03

    申请号:US10651689

    申请日:2003-08-29

    CPC classification number: G02F1/0136 G02F1/134363

    Abstract: A liquid crystal polarization rotator device is able to rotate polarization fast enough to compensate polarization mode dispersion. The amount or degree of rotation is rapidly reconfigurable. The device includes a cavity filled with a nematic liquid crystal material. The cavity has electrodes on a first face, e.g., a first substrate, and electrodes on a second face, e.g., a second substrate, opposite the first face. The electrodes are shaped and positioned to produce an electric field across the cavity capable of rotating the alignment direction of the molecules of the liquid crystal material in the cavity. The electrodes are patterned on the ends of optical fibers. Aligning and positioning of the electrodes on the ends of the optical fibers with a predetermined spacing forms the cavity that is filled with the nematic liquid crystal material. The filled cavity is a so-called liquid crystal microcell wave plate. A control system is used to control the “rapid” rotation of the alignment direction of the molecules of the liquid crystal material. The control system receives data regarding the polarization of light entering or leaving the microcell and adjusts the direction of the electric field also using trigger pulses such as to rotate the nematic liquid crystal material molecules by a first predetermined number of degrees greater than a second desired number of degrees of rotation. Then, the trigger pulses for the electric field are stopped after the molecules have rotated by the second desired number of degrees. In this manner, the molecules rotate by the second desired number of degrees much faster than if a pulse had been applied with the same speed to rotate them by the second desired number of degrees in he first place.

    Abstract translation: 液晶偏振旋转器能够快速旋转极化,以补偿偏振模色散。 旋转量或速度可以快速重构。 该装置包括填充向列型液晶材料的空腔。 空腔在第一面上具有电极,例如第一基底,以及与第一面相对的第二面,例如第二基底上的电极。 电极被成形和定位以产生能够旋转空腔中的液晶材料的分子的取向方向的空腔的电场。 电极在光纤的端部被图案化。 电极在光纤端部上以预定间隔的对准和定位形成填充向列型液晶材料的空腔。 填充腔是所谓的液晶微电池波片。 控制系统用于控制液晶材料分子的取向方向的“快速”旋转。 控制系统接收关于进入或离开微电池的光的偏振的数据,并且还使用触发脉冲调节电场的方向,例如使向列型液晶材料分子旋转大于第二所需数量的第一预定数量 的旋转度。 然后,在分子旋转了第二所需数量的度之后,停止用于电场的触发脉冲。 以这种方式,分子以比第一位置以相同速度施加脉冲旋转第二所需数量的速度快得多的第二所需数量的速度快得多。

    Retractable door system
    42.
    发明授权
    Retractable door system 失效
    伸缩门系统

    公开(公告)号:US06728992B1

    公开(公告)日:2004-05-04

    申请号:US10044753

    申请日:2002-01-14

    Applicant: John Rogers

    Inventor: John Rogers

    Abstract: A retractable door system for returning to a nearly closed position a door that has been opened having: a catch knob secured to a doorframe; a housing secured to a door; a retractable cord anchored within the housing at one end and having means for attaching to the catch knob at an opposite end; and a cord retracting means located within the housing for retracting the cord within the housing. The retractable door system may optionally further have a pad on the portion of the housing contacting a doorframe when the door is placed in a nearly closed position or a pad on the portion of the housing contacting a door or means for adjusting the tension of the retractable cord.

    Abstract translation: 一种可伸缩门系统,用于返回到几乎闭合的位置,已经打开的门具有固定到门框上的卡扣旋钮; 固定在门上的外壳; 在一端固定在壳体内的伸缩绳索,并且具有用于在相对端附接到止动钮的装置; 以及位于所述壳体内的用于将所述绳索缩回到所述壳体内的绳索回缩装置。 可伸缩门系统可以可选地进一步具有在门被放置在接近关闭位置时壳体部分上接触门框的垫或者在壳体接触门的部分上的垫或用于调节可伸缩门的张力的装置 绳子

    Near-real time DGPS network and server system
    43.
    发明授权
    Near-real time DGPS network and server system 有权
    近实时DGPS网络和服务器系统

    公开(公告)号:US06229478B1

    公开(公告)日:2001-05-08

    申请号:US09187690

    申请日:1998-11-05

    Abstract: A method and system for rapidly initializing a rover unit in a networked system. In one embodiment, the present invention acquires rover unit initialization data at a reference station. In one embodiment, the rover unit initialization data is selected from the group consisting of: ephemeris data, almanac data, satellite health data, ionospheric data, UTC and GPS time and approximate rover position information. In the present embodiment, the present invention then communicatively couples the reference station to a server station having memory for storing the rover unit initialization data. After communicatively coupling the reference station to the server station, the present embodiment transfers the rover unit initialization data from the reference station to the server station. The present embodiment then communicatively couples the rover unit to the server station. Next, the present embodiment supplies the rover unit initialization data from the server station to the rover unit. As a result, in the present embodiment, the rover unit is able to be initialized and obtain a first position fix without requiring the rover unit to acquire the initialization data directly from at least one satellite. In another embodiment, the present invention provides a method and system for providing differentially corrected position information to a rover unit in a networked system. In still another embodiment, the present invention provides a method and system for providing both initialization data and differentially corrected position information to a rover unit in a networked system.

    Abstract translation: 一种用于在联网系统中快速初始化流动站单元的方法和系统。 在一个实施例中,本发明在参考站获取流动站单元初始化数据。 在一个实施例中,流动站单元初始化数据选自包括:星历数据,历书数据,卫星健康数据,电离层数据,UTC和GPS时间以及近似流动站位置信息。 在本实施例中,本发明然后将参考站通信地耦合到具有用于存储流动站单元初始化数据的存储器的服务器站。 在将参考站通信耦合到服务器站之后,本实施例将流动站单元初始化数据从参考站传送到服务器站。 本实施例然后将流动站单元通信地耦合到服务器站。 接下来,本实施例将流动站单元初始化数据从服务器站提供给流动站单元。 结果,在本实施例中,能够初始化流动站单元并获得第一定位,而不需要流动站单元从至少一个卫星直接获取初始化数据。 在另一个实施例中,本发明提供一种用于向联网系统中的流动站单元提供差分校正的位置信息的方法和系统。 在另一个实施例中,本发明提供一种用于向网络系统中的流动站单元提供初始化数据和差分校正的位置信息的方法和系统。

    Educational display system
    44.
    发明授权
    Educational display system 失效
    教育展示系统

    公开(公告)号:US4937181A

    公开(公告)日:1990-06-26

    申请号:US420933

    申请日:1989-10-13

    Applicant: John Rogers

    Inventor: John Rogers

    Abstract: An educational visual display system for teaching geography in which objects having some geographical or topographical significance, e.g., states of the Union, may be detachably affixed and arranged to demonstrate relationship between the objects. The preferred system includes (1) a primary background surface of iron velvet fabric material to which hook type fasteners may be detachably adhered, (2) a plurality of primary objects having geographical significance and comprising a soft foam core with a layer of iron velvet fabric on one side and a plurality of hook type fasteners on the other side, the primary objects being arrangeable to represent in combination a larger geographical unit, and (3) a plurality of secondary objects each having geographical or topographical significance and having hook type fasteners on one side thereof for being detachably affixable to the layer of iron velvet fabric of the primary objects. The iron velvet fabric and the hook type fasteners function as an attachment pair similar to hook and loop fasteners sold under the tradename VELCRO.RTM..

    Abstract translation: 一种用于教导地理学的教育性视觉显示系统,其中具有某些地理或形态意义的对象,例如联盟的状态,可以可拆卸地固定和布置,以证明对象之间的关系。 优选的系统包括(1)铁丝绒织物材料的主要背景表面,钩型紧固件可以可拆卸地粘附到其上,(2)具有地理意义的多个主要物体,并且包括具有铁丝绒织物层的软泡沫芯 在另一侧上的一侧和多个钩型紧固件上,主要物体可组合地表示较大的地理单元,和(3)多个具有地理或地形意义的次要物体,并且具有钩形紧固件 其一侧用于可拆卸地固定到主要物体的铁丝绒织物层。 铁丝绒织物和钩型紧固件用作类似于以商品名VELCRO TM销售的钩环紧固件的附件对。

    Liquefying hot melt adhesive
    45.
    发明授权
    Liquefying hot melt adhesive 失效
    液化热熔胶

    公开(公告)号:US4505669A

    公开(公告)日:1985-03-19

    申请号:US466082

    申请日:1983-02-14

    Applicant: John Rogers

    Inventor: John Rogers

    CPC classification number: B05C11/1042 B29B13/022 B29K2105/0097

    Abstract: For liquefying hot melt adhesive, a hopper is provided at its lower region with one or more discrete upwards projections (for example a single, fluted cone), with means for heating the projection(s). In use, a unitary mass of hot melt adhesive is lowered into the hopper to become supported on the projection(s), as a result of which the unitary mass is progressively melted and the melted adhesive flows from the bottom of the hopper.

    Abstract translation: 为了液化热熔粘合剂,在其下部区域处设置有一个或多个离散的向上突起(例如单个带槽锥体)的料斗,其具有用于加热突起的装置。 在使用中,将单一质量的热熔粘合剂降低到料斗中以支撑在突出部上,结果,整体质量逐渐熔化,并且熔融的粘合剂从料斗的底部流动。

    Coating applicator head
    46.
    发明授权
    Coating applicator head 失效
    涂敷机头

    公开(公告)号:US4466378A

    公开(公告)日:1984-08-21

    申请号:US392708

    申请日:1982-06-28

    Abstract: An applicator head, for applying a coating of material (e.g. hot-melt adhesive) to a passing ribbon comprises an extrusion slot disposed transverse to the direction of passage of the ribbon and arranged to apply a coating of material in at least one continuous band along the ribbon, and an arrangement for intermittently opening and closing an extrusion slot for applying a coating of material discontinuously in a band contiguous with said one band.

    Abstract translation: 用于将涂层(例如热熔粘合剂)施加到通过的带上的涂抹头包括横向于带状物通过方向设置的挤出槽,并布置成沿至少一个连续带施加材料涂层 所述带状物和用于间歇地打开和关闭用于在与所述一个条带相邻的条带中不连续地施加材料涂层的挤出槽的装置。

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