公开(公告)号：US06320190B1

公开(公告)日：2001-11-20

申请号：US09312226

申请日：1999-05-14

申请人： Trevor Richard Voevodin

发明人： Trevor Richard Voevodin

IPC分类号： G01N2100

CPC分类号： G01N21/15 ,  G01N21/534

摘要： A shield for a detector or prism of a particle detection system has a body mountable on the detector or prism, divided into first and second compartments by an intermediate wall with a hole therethrough. Air diffuser units In the first compartment (adjacent the detector or prism) generate a stable column of air which prevents the particles contacting the beam window of the detector or prism.

摘要翻译： 用于颗粒检测系统的检测器或棱镜的屏蔽件具有可安装在检测器或棱镜上的主体，通过具有穿过其中的孔的中间壁分成第一和第二隔室。 空气扩散器单元在第一隔室（邻近检测器或棱镜）产生稳定的空气柱，防止颗粒与检测器或棱镜的光束窗口接触。

公开(公告)号：US06317212B1

公开(公告)日：2001-11-13

申请号：US09397903

申请日：1999-09-17

申请人： Robert D. Eckles

发明人： Robert D. Eckles

IPC分类号： G01N2161

CPC分类号： G01N21/3504 ,  G01N21/15

摘要： The present gas analyzer allows for the effective measurement of the concentration of one or more gases or vapors within a sample. The gas analyzer utilizes a plurality of reference filters that are located between the source and the sample region to enhance the measurements associated with the sample filters. The gas analyzer also utilizes a gas channel to facilitate the circulation of scrubbed gas between two separate housing sections.

摘要翻译： 本气体分析仪允许有效测量样品中一种或多种气体或蒸气的浓度。 气体分析仪利用位于源和样品区域之间的多个参考过滤器来增强与样品过滤器相关联的测量。 气体分析器还利用气体通道来促进洗涤气体在两个分离的壳体部分之间的循环。

公开(公告)号：US5720650A

公开(公告)日：1998-02-24

申请号：US801108

申请日：1997-02-13

申请人： Ganapati R. Mauze ,  George W. Hopkins, II ,  Tad Decatur Simons

发明人： Ganapati R. Mauze ,  George W. Hopkins, II ,  Tad Decatur Simons

IPC分类号： G01N21/15 ,  G01N33/00 ,  G01N33/497 ,  B24C3/00

CPC分类号： G01N33/497 ,  G01N21/15 ,  G01N33/0029

摘要： A gas analysis apparatus for analysis of sample gas wherein the apparatus has a mechanism for cleaning optical elements such as reflectors and windows in the apparatus is provided. The gas analysis apparatus includes a light source for emitting light, a body having an isolated cavity in which the light emitted by the light source propagates, a detector for analyzing light scattered by the sample gas in the isolated cavity, and a spraying system connected to the body to spray a sublimable substance. The isolated cavity has one or more optical elements each with a surface. The spray of the sublimable substance is directed onto such a surface for in situ removal of contaminants. The body has a sample inlet port for introducing the sample gas into the cavity and an outlet port for venting gas from the cavity.

摘要翻译： 提供了一种用于分析样品气体的气体分析装置，其中该装置具有用于清洁装置中的诸如反射器和窗口的光学元件的机构。 气体分析装置包括用于发射光的光源，具有由光源发射的光传播的隔离空腔的主体，用于分析由隔离空腔中的样品气体散射的光的检测器，以及连接到 身体喷洒升华物质。 隔离腔具有一个或多个各自具有表面的光学元件。 可升华物质的喷雾被引导到这样的表面上用于原位去除污染物。 主体具有用于将样品气体引入空腔的样品入口和用于从腔体排出气体的出口。

公开(公告)号：US5565985A

公开(公告)日：1996-10-15

申请号：US486169

申请日：1995-06-06

申请人： Boris Fishkin ,  Phil Salzman

发明人： Boris Fishkin ,  Phil Salzman

IPC分类号： G01J9/02 ,  G01N15/00 ,  G01N15/02 ,  G01N15/14 ,  G01N21/15 ,  G01N21/21 ,  G01N21/49 ,  G01N21/53 ,  H01L21/02 ,  G01N21/03

CPC分类号： G01N21/15 ,  G01N21/53

摘要： An improved particle monitoring sensor is described which uses a variety of techniques to prolong the effective life of the optical surfaces within the particle monitoring sensor. Substantially inert purging gas is directed over the particle monitoring sensor windows, which are normally exposed to a harsh operating environment. The surfaces of these windows are heated by heating elements in direct thermal contact with the windows. In addition, a restrictive slit is placed over the detector window to reduce the exposed area and to increase the velocity of gas flowing over the window surface. While this slit reduces the detector's field of view, the signal loss is reduced by using a linearly polarized light source and aligning the elongated slit's major axis with the direction of polarization.

公开(公告)号：US5523845A

公开(公告)日：1996-06-04

申请号：US378369

申请日：1995-01-25

申请人： Katsu Honzawa ,  Kazuhiro Atsumi ,  Humihiko Shimomura ,  Seiji Kawaguchi ,  Yuichiro Sakamoto ,  Hisaya Motojima ,  Masayuki Masuko ,  Tsuyoshi Hayakawa

发明人： Katsu Honzawa ,  Kazuhiro Atsumi ,  Humihiko Shimomura ,  Seiji Kawaguchi ,  Yuichiro Sakamoto ,  Hisaya Motojima ,  Masayuki Masuko ,  Tsuyoshi Hayakawa

IPC分类号： G01N21/63 ,  G01N1/00 ,  G01N21/15 ,  G01N21/17 ,  G01N35/10 ,  G01N21/11 ,  G01N21/64 ,  G01N21/65

CPC分类号： G01N21/15 ,  G01N2035/1062

摘要： The first branch 1a of the optical fiber 1 is connected to the light source 2, and the second branch 1b is connected to the optical measuring unit 3. A taper-shaped tip member 8 is fitted to a tip end of the optical fiber unit 1 with the use of a jig member 4. The inner hollow space 7 in the tip member 8 is connected with the air suction device 11, through the gap 5 formed between the optical fiber unit 1 and the jig member 4 and the air suction tube 10. The air suction device 11 discharges air from the inner hollow space 7 to suck liquid through the through-hole 6 into the inner hollow space. The air suction device 11 is controlled by the controller 12. Because the optical fiber unit can directly irradiate liquid with light, measurement can be performed with high sensitivity. The optical fiber unit is prevented from contamination.

摘要翻译： 光纤1的第一分支1a连接到光源2，第二分支1b连接到光学测量单元3.锥形尖端构件8装配到光纤单元1的末端 通过使用夹具构件4.通过形成在光纤单元1和夹具构件4之间的间隙5和吸气管10，尖端构件8中的内部中空空间7与吸气装置11连接 吸气装置11从内部中空空间7排出空气，通过通孔6将液体吸入内部中空空间。 吸气装置11由控制器12控制。由于光纤单元可以直接用光照射液体，因此可以以高灵敏度进行测量。 防止光纤单元的污染。

公开(公告)号：US5477318A

公开(公告)日：1995-12-19

申请号：US418889

申请日：1995-04-07

申请人： Rie Ohsaki ,  Masayuki Goto ,  Yasuyoshi Toda

发明人： Rie Ohsaki ,  Masayuki Goto ,  Yasuyoshi Toda

IPC分类号： G01N21/43 ,  G01N21/15 ,  G01N21/41

CPC分类号： G01N21/15 ,  G01N21/43 ,  G01N21/552

摘要： In an apparatus for detecting a property of a liquid, light is emitted from a light emitting element towards an interface between a liquid to be measured and a prism in an interface channel. Reflected light from the interface is received by a light receiving device, and a refractive index of the liquid is obtained from the total reflection critical angle. A cleaning member capable of contacting the interface by the flow of the liquid is provided. The cleaning member may be a small body or a floating member, a tape/string member having one end fixed to a channel wall, or a wiper swingable by the flow of the liquid.

摘要翻译： 在用于检测液体的性质的装置中，从发光元件向接口通道中待测量的液体和棱镜之间的界面发射光。 来自界面的反射光被光接收装置接收，并且从全反射临界角获得液体的折射率。 提供能够通过液体流动而接触界面的清洁构件。 清洁构件可以是小体或浮动构件，具有固定到通道壁的一端的带/弦构件或可由液体流动摆动的擦拭器。

公开(公告)号：US5353629A

公开(公告)日：1994-10-11

申请号：US907393

申请日：1992-07-01

申请人： Colin Hunter

发明人： Colin Hunter

IPC分类号： G01N21/15 ,  G01N21/53 ,  G01N21/59

CPC分类号： G01N21/53 ,  G01N21/15 ,  G01N2021/151

摘要： A smoke meter is particularly adapted to meter the smoke content of vehicle exhaust gases. The meter includes a measuring tube with a light at one end and a light detector at the other end, the amount of light detected corresponding to the smoke content. The optical surfaces are kept clean by inducing a flow of clean air across the surfaces using an air supply which also induces flow of gas into the measuring tube.

摘要翻译： 烟度计特别适用于测量车辆废气的烟雾含量。 仪表包括一端具有光的测量管和另一端的光检测器，对应于烟雾含量检测到的光量。 通过使空气供应也引起清洁空气流过表面，光学表面保持清洁，空气源也引起气体流入测量管。

公开(公告)号：US5200607A

公开(公告)日：1993-04-06

申请号：US842691

申请日：1992-02-27

申请人： Catherine I. Klima

发明人： Catherine I. Klima

IPC分类号： G01J1/02 ,  H01L31/0203 ,  H01L31/0232

CPC分类号： G01J1/02 ,  G01J1/0271 ,  G01N21/15 ,  H01L31/0203 ,  H01L31/0232 ,  G01J2001/028

摘要： A photodetector is provided with a housing that has a discontinuity formed in an outer surface of its light transmissive portion. The discontinuity serves to inhibit liquid droplets from adhering to the outer surface of the endface in the region where the discontinuity is located. Alternative embodiments of the present invention include discontinuities formed in the outer surfaces of housing windows which have flat inner surfaces or inner surfaces which are shaped to formed lenses. By preventing liquid droplets from adhering to the outer surface of the window, the present invention prevents the reflective liquid surfaces of droplets from creating false signals for the photodetector by reflecting light back from the light source toward a light sensitive component.

摘要翻译： 光电检测器设置有在其透光部分的外表面上形成有不连续的壳体。 不连续性用于在不连续位置的区域中抑制液滴附着到端面的外表面。 本发明的替代实施例包括形成在壳体窗的外表面中的不连续性，其具有平坦的内表面或内表面，其被成形为成形的透镜。 通过防止液滴附着在窗的外表面，本发明通过将来自光源的光反射回光敏部件来防止液滴的反射液面对于光检测器产生假信号。

公开(公告)号：US5185531A

公开(公告)日：1993-02-09

申请号：US766858

申请日：1991-09-26

申请人： William H. Wynn

发明人： William H. Wynn

IPC分类号： G01N21/15

CPC分类号： G01N21/15 ,  G01N2021/155

摘要： Apparatus for cleaning the interior surface of a window in an inline optical sensors which is subject to contamination and fouling by a product stream in contact therewith. The window surface is wiped by a blade driven by a pneumatic operator, and the amount of air supplied to the operator is adjusted to control the speed at which the blade moves across the window surface. When a cleaning operation is initiated, the blade is wiped across the window surface a predetermined number of times, and measurements utilizing data from the sensor are suspended until the cleaning operation is completed and the data has had time to restabilize.

摘要翻译： 用于清洁在线光学传感器中的窗户的内表面的设备，该传感器受到与其接触的产品流的污染和污染。 窗表面被由气动操作者驱动的叶片擦拭，并且调节供应到操作者的空气量以控制叶片在窗表面上移动的速度。 当开始清洁操作时，刀片在窗口表面上擦拭预定次数，并且利用来自传感器的数据的测量被暂停，直到清洁操作完成并且数据已经有时间来恢复稳定。

公开(公告)号：US5135304A

公开(公告)日：1992-08-04

申请号：US771625

申请日：1991-10-04

申请人： Scott D. Miles ,  John R. Mitchell ,  Donald E. Gregonis ,  Joel M. Harris

发明人： Scott D. Miles ,  John R. Mitchell ,  Donald E. Gregonis ,  Joel M. Harris

IPC分类号： G01J3/44 ,  G01N21/15 ,  G01N21/39 ,  G01N21/65 ,  G01N21/85

CPC分类号： G01N21/15 ,  G01N21/65 ,  G01N2021/151 ,  G01N2021/391 ,  G01N2021/651 ,  G01N2021/8578

摘要： A gas analysis cell positioned within an optical resonant cavity in a gas analysis system is disclosed wherein the cell includes a flow of buffer gas which forms a "dam", thereby protecting the optical elements in the analysis system. The analysis cell includes an inlet for introducing a gas sample into the analysis chamber of the cell. Two buffer gas inlet ports, one on each end of the cell, are provided to introduce a flow of buffer gas which is directed past optical elements in the system adjacent the ends of the cell. Two output ports are located at the ends of the analysis chamber to remove the buffer gas and gas sample mixture. The flow of buffer gas acts to confirm the gas sample within the analysis chamber and reduce adverse effects which occur when the gas sample comes in contact with the optical elements of the system. By providing a constant non-turbulent flow of gas adjacent the system optics, adverse changes in index of refraction are avoided, thus reducing beam steering and Schlieren effects which can occur when Brewster windows or other optics are used to constrain the gas sample within the analysis cell. The buffer gas flow in the analysis cell of the present invention eliminates the need for gas cell windows which have intrinsic losses. This in turn minimizes losses which cause lower circulating intracavity power and signal strength.

摘要翻译： 公开了一种位于气体分析系统中的光学谐振腔内的气体分析单元，其中所述单元包括形成“大坝”的缓冲气体流，从而保护分析系统中的光学元件。 分析单元包括用于将气体样品引入电池的分析室的入口。 提供两个缓冲气体入口端口，每个单元的每一端一个，以引入缓冲气体流，该缓冲气体流经过靠近电池端部的系统中的光学元件。 两个输出端口位于分析室的端部，以去除缓冲气体和气体样品混合物。 缓冲气体的流动用于确认分析室内的气体样品，并减少当气体样品与系统的光学元件接触时发生的不利影响。 通过在系统光学器件附近提供恒定的非湍流气体，避免了折射率的不利变化，因此当使用布鲁斯特窗口或其他光学器件来限制分析中的气体样品时，可以发生波束转向和Schlieren效应 细胞。 本发明的分析池中的缓冲气体流动消除了对具有固有损失的气室的需求。 这又减少了导致循环腔内功率和信号强度降低的损失。