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    • 52. 发明申请
    • Method and apparatus of vibration isolation, in particular for electron beam metrology tools
    • 振动隔离的方法和装置,特别是电子束计量工具
    • US20050076725A1
    • 2005-04-14
    • US10949069
    • 2004-09-24
    • Peter Heiland
    • Peter Heiland
    • G01B15/00F16F15/02G01B21/00G01N23/225G05D19/02H01J37/02H01J37/20H01J37/26G21K5/10G01D11/10
    • H01J37/20H01J37/02H01J2237/0216
    • There is provided a method and an apparatus for isolating mechanical vibrations reacting to beam metrology tools. The apparatus includes an outer structure for supporting a metrology instrument, and a chuck for holding a specimen with respect to the metrology instrument in an intended defined position for performing measurements on the specimen by the metrology instrument,. The apparatus also includes at least one active vibration isolator means coupled to the chuck for compensating relative movement between the specimen and the metrology instrument. A method is also provided that includes detecting a change of position of the specimen in response to mechanical vibrations, and effectuating an active modification of the position of the chuck in response to the detection for counteracting a relative displacement between the specimen and the metrology instrument.
    • 提供了一种用于隔离对梁计量工具反应的机械振动的方法和装置。 该装置包括用于支撑计量仪器的外部结构和用于相对于计量仪器将样本保持在用于由计量仪器对样本进行测量的预定限定位置的卡盘。 该装置还包括耦合到卡盘的至少一个主动隔振装置,用于补偿试样和计量仪器之间的相对运动。 还提供了一种方法,其包括响应于机械振动来检测样本的位置变化,并且响应于用于抵消样本和计量仪器之间的相对位移的检测而实现卡盘的位置的有效修改。
    • 53. 发明授权
    • Apparatus for isolating a sensor
    • 用于隔离传感器的设备
    • US5348267A
    • 1994-09-20
    • US947148
    • 1992-09-18
    • Mark L. LantingAlan R. DavisStephen A. Edelen
    • Mark L. LantingAlan R. DavisStephen A. Edelen
    • F16F15/08G01D11/10G01D11/30G01H1/00G12B9/08F16M13/00
    • G01D11/10F16F15/08G01D11/30
    • Apparatus is provided for isolating a sensor from a vibrating surface. The sensor has first and second spaced surfaces, a bore extending between the surfaces and a groove in the second surface. The apparatus includes a flanged sleeve adapted to extend through the bore to the vibrating surface. The sleeve is sufficiently long when extending through the bore to provide a first gap between the vibrating surface and the second surface of the sensor and sufficiently narrow when extending through the bore to provide a second gap between the sleeve and the sensor. The flange overlays the first surface of the sensor and the second gap. The apparatus also includes a bolt, which extends through the bore and into engagement with the vibrating surface, for attaching the sleeve to the vibrating surface. The apparatus also includes a first O-ring positioned between the first surface of the sensor and the sleeve flange and a second O-ring positioned in the groove of the second surface. The first O-ring spaces the sensor from the sleeve and the flange and the second O-ring is adapted to abut the vibrating surface and space the sensor from the vibrating surface and the sleeve, such that the sensor floats between the first and second O-rings in isolation from the sleeve and the vibrating surface.
    • 提供用于将传感器与振动表面隔离的装置。 传感器具有第一和第二间隔表面,在表面之间延伸的孔和第二表面中的凹槽。 该装置包括适于延伸穿过孔到凸缘表面的凸缘套筒。 当延伸穿过孔时,套筒足够长,以在振动表面和传感器的第二表面之间提供第一间隙,并且当延伸穿过孔时足够窄,以在套筒和传感器之间提供第二间隙。 该法兰覆盖传感器的第一表面和第二间隙。 该装置还包括螺栓,其延伸穿过孔并与振动表面接合,用于将套筒附接到振动表面。 该装置还包括位于传感器的第一表面和套筒凸缘之间的第一O形环和位于第二表面的凹槽中的第二O形环。 第一O形环将传感器与套筒隔开并且法兰和第二O形环适于邻接振动表面并将传感器与振动表面和套筒隔开,使得传感器浮在第一和第二O - 与套筒和振动表面隔离。
    • 56. 发明授权
    • Electromagnetic torsional stiffness element
    • 电磁扭转刚度元件
    • US4198863A
    • 1980-04-22
    • US822421
    • 1977-08-05
    • Gerhard BartekHartmut Euer
    • Gerhard BartekHartmut Euer
    • G01D5/20G01L3/14G01R1/14G01R17/00H01F7/14H01F29/14H02K24/00G01D11/10
    • H01F29/146G01D5/2066G01L3/14G01R1/14G01R17/00H01F7/145H02K24/00Y10T74/1257
    • An electromagnetic torsion stiffness arrangement with integrated auxiliary elements in which a magnetic field exerts restoring forces on a current-carrying conductor when moved from its rest position. The magnitude of the restoring forces are dependent on variation of current density. The current-carrying conductor serves as a primary winding of a position sensor, while serving simultaneously also for indicating torsion stiffness. A monitoring winding coil is displaced half a pole graduation from the conductor and moves along with the conductor. The magnetic field is produced by two multi-pole magnetic systems which form an air gap and face each other so that opposite poles face each other at the air gap. The conductor is movable within the air gap. A secondary winding of the position sensor is located outside of the air gap of the magnetic systems. The conductor is located on a disk rotating in the air gap between the magnetic systems, and the disks also serve simultaneously the function of electrical damping of the motion.
    • 具有集成辅助元件的电磁扭转刚度布置,其中磁场在从静止位置移动时对载流导体施加恢复力。 恢复力的大小取决于电流密度的变化。 载流导体用作位置传感器的初级绕组,同时用于指示扭转刚度。 监控绕组线圈从导体移位一半磁极刻度并与导体一起移动。 磁场由两个多极磁系统产生,这两个磁极系形成一个气隙并且彼此面对,使得相对极在气隙处彼此面对。 导体可在气隙内移动。 位置传感器的次级绕组位于磁性系统的气隙外部。 导体位于在磁系统之间的气隙中旋转的盘上,并且盘也同时用于运动的电阻尼功能。