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1. 发明申请

US20070047385A1 Particulate tester with mixer for analytical application 失效
标题翻译：用于分析应用的搅拌机的颗粒测试仪
公开(公告)号：US20070047385A1
公开(公告)日：2007-03-01
申请号：US11506545
申请日：2006-08-18
申请人： Kenneth Girvin , Gerald Szpak , Keith Bender , Shawn Hogan , Robert Moss
发明人： Kenneth Girvin , Gerald Szpak , Keith Bender , Shawn Hogan , Robert Moss
IPC分类号： B01F11/00
CPC分类号： G01N21/534 , B01F11/0014
摘要： A mixer for analytical application mixes a container of fluid without a magnetic stir bar. A device for testing a liquid for particles can use the mixer. The mixing can occur in a sealed container, and liquid can be transmitted to the device from the sealed container.
摘要翻译：用于分析应用的混合器混合没有磁力搅拌棒的流体容器。用于测试颗粒液体的装置可以使用混合器。混合可以在密封容器中发生，并且液体可以从密封容器传递到装置。

2. 发明申请

US20050179896A1 Method and apparatus for operating a laser in an extinction-type optical particle detector 有权
标题翻译：用于在消光型光学粒子检测器中操作激光的方法和装置
公开(公告)号：US20050179896A1
公开(公告)日：2005-08-18
申请号：US10778968
申请日：2004-02-13
申请人： Kenneth Girvin , Adam Reed
发明人： Kenneth Girvin , Adam Reed
IPC分类号： G01N15/14 , G01N15/02
CPC分类号： G01N15/1459 , G01N15/1434
摘要： Disclosed are light extinction-type optical particle detection systems and methods for their use. One such system comprises a laser source that produces a laser beam. The laser beam propagates from the laser source in response to a drive current having an amplitude that reaches a lasing threshold. The laser beam is characterized by mode-hopping noise energy that is produced by spurious switching of laser operating modes. The system also comprises a view volume through which the laser beam propagates and a stream of target particles immersed in a carrier fluid flows. The system also comprises a light-extinction type detector positioned on a side of the view volume opposite of the laser source. The laser beam strikes the target particles and thereby affects an amount of the laser beam that is incident on the detector, which produces, in response to the incident laser beam, a detection signal corresponding to a number of target particles in the view volume. The system also comprises a signal generator that produces the drive current such that the drive current amplitude transitions across the lasing threshold by a selected amount and at a selected frequency to purposefully cause the laser beam to operate simultaneously in multiple lasing modes. The selected amount and frequency cooperate to spread the mode-hopping noise energy over a spectral range established by the number of simultaneously operating lasing modes, such that the detector does not appreciably respond to the mode-hopping noise energy when producing the detection signal. Other systems and methods rapidly turn alternately on and off the laser such that the laser is on for no continuous period of time long enough to undergo undesired mode hopping, or vary the drive current amplitude in such a way to substantially inhibit undesired mode hopping.
摘要翻译：公开了消光型光学粒子检测系统及其使用方法。一个这样的系统包括产生激光束的激光源。响应于具有达到激光阈值的幅度的驱动电流，激光束从激光源传播。激光束的特征在于通过激光操作模式的杂散切换产生的跳频噪声能量。该系统还包括激光束传播的视图体积，并且浸入载体流体中的目标颗粒流流动。该系统还包括位于与激光源相对的视图体积的一侧的光消失型检测器。激光束撞击目标颗粒，从而影响入射到检测器上的激光束的量，其响应于入射激光束产生对应于视野体积中的目标颗粒数量的检测信号。该系统还包括产生驱动电流的信号发生器，使得驱动电流振幅跨越激光阈值转过选定量并且以选定的频率，有目的地使激光束以多种激光模式同时操作。所选择的量和频率合作以在由同时操作的激光模式的数量建立的频谱范围上扩展跳频噪声能量，使得在产生检测信号时检测器不会明显地响应于跳频噪声能量。其他系统和方法迅速地交替地开启和关闭激光器，使得激光器不经过足够长的连续时间段接通以进行不期望的模式跳变，或以这样的方式改变驱动电流幅度以基本上抑制不期望的模式跳变。

3. 发明申请

US20060132770A1 Particle detection system implemented with an immersed optical system 有权
标题翻译：采用浸入式光学系统实现的粒子检测系统
公开(公告)号：US20060132770A1
公开(公告)日：2006-06-22
申请号：US11241216
申请日：2005-09-30
申请人： Kenneth Girvin , Richard DeFreez , James Brady
发明人： Kenneth Girvin , Richard DeFreez , James Brady
IPC分类号： G01N21/00
CPC分类号： G01N15/1459 , G01N21/94 , G01N2015/1493
摘要： Fluid-based particle detection exhibits improved light collection and image quality from a light collection system that uses immersed optics on a flow-through cell for collecting and detecting scattered light from particles carried by the fluid.
摘要翻译：基于流体的颗粒检测表现出来自采集系统的光采集和图像质量的改善，该采集系统使用浸入式光学器件用于流通池，用于收集和检测由流体携带的颗粒散射的光。

4. 发明申请

US20050024641A1 Particle detection system 审中-公开
标题翻译：粒子检测系统
公开(公告)号：US20050024641A1
公开(公告)日：2005-02-03
申请号：US10927671
申请日：2004-08-27
申请人： Richard DeFreez , James Brady , Kenneth Girvin
发明人： Richard DeFreez , James Brady , Kenneth Girvin
IPC分类号： G01N15/14 , G01N21/53 , G01N21/00
CPC分类号： G01N21/53 , G01N15/1429 , G01N15/1459 , G01N2015/1402
摘要： A particle detection system exhibits an increased ability to detect the presence of submicron diameter particles and to distinguish between noise and pulse output signals generated by small diameter particles on which a light beam is incident. This increased ability results from the incorporation of a light reflector, a pair of detector elements that detect correlated portions of the light beam that have been scattered in multiple directions, and a coincidence circuit that determines whether each detector element in the pair concurrently generates a pulse output signal exceeding a predetermined threshold. Sample particles are counted only when both detector elements concurrently detect scattered light components.
摘要翻译：颗粒检测系统表现出增加的检测亚微米直径颗粒的存在的能力，并且区分由光束入射的小直径颗粒产生的噪声和脉冲输出信号。这种增加的能力来自于结合光反射器，检测已经在多个方向上散射的光束的相关部分的一对检测器元件，以及确定该对中的每个检测器元件是否同时产生脉冲的符合电路输出信号超过预定阈值。只有当两个检测器元件同时检测散射光分量时，才对样品颗粒进行计数。

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