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公开(公告)号：US4884450A
公开(公告)日：1989-12-05
申请号：US310501
申请日：1989-02-13
CPC分类号： G01L1/103 , G01D5/268 , G01L1/186 , G01L11/02 , G01L9/0017 , G01L9/002 , G01L9/0077
摘要： A pressure sensor includes a resonator element (14) mounted on an optical fibre ferrule (11) whereby light signals for maintaining the resonator in a state of oscillation and for returning a modulated signal to a remote station are coupled to the resonator. The resonator is located in an evacuated cavity and is mounted on a flexible diaphragm whereby pressure changes may be detected as changes in the resonant frequency.
摘要翻译： 压力传感器包括安装在光纤套管（11）上的谐振器元件（14），由此用于将谐振器保持在振荡状态并用于将调制信号返回到远程站的光信号耦合到谐振器。 谐振器位于抽真空腔中并且安装在柔性隔膜上，由此可以将谐振频率的变化检测为压力变化。
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公开(公告)号：US5030878A
公开(公告)日：1991-07-09
申请号：US320277
申请日：1989-03-06
申请人： Raymond L. Roy , Peter W. Graves , Thomas J. Loretz , Jonathan W. Amy , George C. Stafford, Jr.
发明人： Raymond L. Roy , Peter W. Graves , Thomas J. Loretz , Jonathan W. Amy , George C. Stafford, Jr.
IPC分类号： H01J43/24
CPC分类号： H01J43/24
摘要： A segmented electron multiplier is disclosed with front and rear sections. The sections are specially designed so that the length of the rear section compared to the length of the front section is no less than 4:1. This permits multiple replacements of the rear section, after the multiplier wears out, without any unsatisfactory drop in the overall electrical gain produced by the repaired device. In the preferred embodiment, the front portion is a funnel having a tubular stem, and the rear portion is a straight tube with a cylindrical helical inner channel. The length-to-length split is 5:1, which theoretically permits up to six or seven replacements of the rear section before unsatisfactory gain occurs.
摘要翻译： 公开了分段电子倍增器，其具有前部和后部。 这些部分是专门设计的，使得后部的长度与前部的长度相比不小于4：1。 这样可以在乘法器磨损之后对后部进行多次更换，而不会使由修理的设备产生的整体电气增益不会令人满意的下降。 在优选实施例中，前部是具有管状杆的漏斗，后部是具有圆柱形螺旋形内部通道的直管。 长度与长度之间的距离为5：1，理论上允许在不令人满意的增益发生之前最多可以对后部进行六到七次更换。
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公开(公告)号：US5374864A
公开(公告)日：1994-12-20
申请号：US758285
申请日：1991-08-28
CPC分类号： H01J43/24
摘要： A series of improved electron multipliers is shown which are capable of reducing the number of bombardments per unit area. In the preferred embodiment, the inner channel is significantly increased in surface area over that surface area of present-day multipliers. Because the surface area is increased, for the same charge throughout, the number of electron bombardments per unit area is decreased. Since the number of bombardments per unit area is reduced, there is less degradation on the inner surface of the channel and hence the device lifetime is also increased.
摘要翻译： 示出了一系列改进的电子倍增器，其能够减少每单位面积的轰击次数。 在优选实施例中，内通道在当前乘法器的表面积上的表面积显着增加。 由于表面积增加，对于同样的电荷，每单位面积的电子轰击数量减少。 由于每单位面积的轰击次数减少，通道内表面的劣化较少，因此装置寿命也增加。
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