公开(公告)号：US6089076A

公开(公告)日：2000-07-18

申请号：US156338

申请日：1998-09-18

申请人： Eric R. Mueller ,  Richard A. Hart ,  William A. Veronesi ,  Frederick T. Olender

发明人： Eric R. Mueller ,  Richard A. Hart ,  William A. Veronesi ,  Frederick T. Olender

IPC分类号： G01M3/38 ,  G02F1/01 ,  G02F1/11 ,  G01J5/02 ,  G01M3/16

CPC分类号： G02F1/0121 ,  G01M3/38 ,  G02F1/113

摘要： The present invention is a system for controlling the power level of a beam exiting an acousto-optic cell and/or a beam delivery device. A beam detector senses the power level of the beam and produces a power signal indicative thereof. An error detector compares the power signal to a predetermined power level. If the power signal and predetermined power level differ, the error amplifier emits a correction signal to a variable amplitude source, which adjusts the amplitude of the acoustic drive frequency such that the power level of the beam exiting the acousto-optic cell and/or the beam delivery device is substantially equal to the predetermined power level.

摘要翻译： 本发明是一种用于控制离开声光电池和/或光束输送装置的光束的功率电平的系统。 光束检测器检测光束的功率电平并产生指示其的功率信号。 误差检测器将功率信号与预定功率电平进行比较。 如果功率信号和预定功率电平不同，则误差放大器向可变幅度源发射校正信号，该可调幅度源调节声驱动频率的幅度，使得离开声光电池的光束的功率电平和/或 光束输送装置基本上等于预定功率电平。

公开(公告)号：US5041856A

公开(公告)日：1991-08-20

申请号：US455103

申请日：1989-12-22

申请人： William A. Veronesi ,  Andrew P. Weise ,  Robert W. Reed ,  Harry I. Ringermacher

发明人： William A. Veronesi ,  Andrew P. Weise ,  Robert W. Reed ,  Harry I. Ringermacher

IPC分类号： G01V3/10

CPC分类号： G01V3/101

摘要： An arrangement for detecting metallic particles carried by a fluid includes a metallic probe member which surrounds an elongated passage through which the fluid flows and which is constituted by a split tube having two marginal portions delimiting a gap which extends along said passage and completely separates the marginal portions from one another. Capacitors are arranged at the gap and alternating electric current is caused to flow in the probe member around the passage so that the probe member and the capacitors form a tank circuit having resonance characteristics that are influenced by any inclusion then present in the passage in a manner dependent on the electromagnetic properties of the inclusion. The character of any metallic particle then present in the passage is determined from variations in the alternating electric current that reflect the influence of such metallic particle on the resonance characteristics.

摘要翻译： 用于检测由流体携带的金属颗粒的装置包括金属探针构件，该金属探针构件围绕流体流过的细长通道，该金属探针构件由具有限定沿着所述通道延伸的间隙的两个边缘部分的分裂管构成，并且完全分离边缘 部分彼此。 电容器布置在间隙处，并且使交流电流在通道周围的探针构件中流动，使得探针构件和电容器形成谐振特性的谐振特性，该谐振特性受到以通道中存在的任何夹杂物的影响 取决于夹杂物的电磁特性。 然后存在于通道中的任何金属颗粒的特性由反映这种金属颗粒对共振特性的影响的交流电流的变化确定。