公开(公告)号：US5558232A

公开(公告)日：1996-09-24

申请号：US177846

申请日：1994-01-05

申请人： Albert F. Stevens ,  Jeffrey L. Chodack ,  Russell M. Lange ,  Robert R. Dewitt ,  John D. Coleman ,  Peter W. Bressler ,  Keith W. Forsyth

发明人： Albert F. Stevens ,  Jeffrey L. Chodack ,  Russell M. Lange ,  Robert R. Dewitt ,  John D. Coleman ,  Peter W. Bressler ,  Keith W. Forsyth

IPC分类号： B07C3/20 ,  B07C5/00 ,  G06K9/00

CPC分类号： G06K9/033 ,  B07C3/20 ,  Y10S209/90 ,  Y10S209/939 ,  Y10S209/942

摘要： An apparatus and method for sorting documents is provided. A document transport on the apparatus conveys documents along a selected path of movement from an input bin to a series of output bins. An optical scanner, such as a video camera, is positioned along the selected path to capture images of the documents. The captured images are displayed on a display monitor to permit an operator to inspect portions of the documents for a desired characteristic. The operator activates a push button on a selector switch depending on the presence of the desired characteristic. Bins are provided for stacking and separating documents having the desired characteristic from those documents lacking the desired characteristic. Gates are provided for directing the documents to the appropriate output bin.

摘要翻译： 提供了一种用于分类文件的装置和方法。 装置上的文件传送将沿着所选择的运动路径的文档从输入箱传送到一系列输出箱。 诸如摄像机的光学扫描器沿所选路径定位以捕获文档的图像。 捕获的图像显示在显示监视器上，以允许操作者检查部分文档的期望特性。 操作员根据所需特性的存在激活选择开关上的按钮。 提供了用于堆叠和分离具有期望特性的文件与不具有期望特性的文档的分离。 提供盖板用于将文件引导到相应的出纸槽。

公开(公告)号：US07265846B2

公开(公告)日：2007-09-04

申请号：US10770854

申请日：2004-02-03

申请人： Keith W. Forsyth

发明人： Keith W. Forsyth

IPC分类号： G01N21/55 ,  G08B19/02 ,  G01J5/02

CPC分类号： G01N21/314 ,  G01N21/3554 ,  G01N21/359

摘要： Methods for detecting the presence or absence of ice or liquid water on surfaces are provided. In a first embodiment of the invention, a reflectance spectrum from a surface to be tested is measured using any suitable near-infrared optical system. The midpoint wavelength of the transition or step of the measured reflectance spectrum near 1.4 microns is calculated, and compared to a decision threshold wavelength. If the midpoint wavelength is less than the decision threshold wavelength, the presence of liquid water on the surface is indicated. If the midpoint wavelength is greater than the decision threshold wavelength, the presence of ice is indicated on the surface. In a second embodiment of the invention, at least three reflectance levels are measured at three wavelengths, and a dimensionless decision function is applied to the measured reflectance levels. Output of the decision function is compared to at least two pre-defined ranges. If the output is within a first range, the presence of liquid water on the surface is indicated. If the output is within a second range, the presence of ice on the surface is indicated. If the output is between the pre-defined ranges, the absence of ice or water on the surface is indicated.

摘要翻译： 提供了检测表面上是否存在冰或液态水的方法。 在本发明的第一实施例中，使用任何合适的近红外光学系统测量来自被测试表面的反射光谱。 计算1.4微米附近测量的反射光谱的转变或步长的中点波长，并与判定阈值波长进行比较。 如果中点波长小于判定阈值波长，则表示表面上存在液态水。 如果中点波长大于判定阈值波长，则表面存在冰。 在本发明的第二实施例中，在三个波长处测量至少三个反射率水平，并且将无量纲决策函数应用于所测量的反射率水平。 将决策功能的输出与至少两个预定义的范围进行比较。 如果输出在第一范围内，则表示表面存在液态水。 如果输出在第二范围内，则表示表面存在冰。 如果输出在预定义的范围之间，则表示没有冰或水。

公开(公告)号：US4910458A

公开(公告)日：1990-03-20

申请号：US29835

申请日：1987-03-24

申请人： Keith W. Forsyth ,  Philippe Bado

发明人： Keith W. Forsyth ,  Philippe Bado

IPC分类号： G01R15/24 ,  G01R13/34 ,  G01R13/40 ,  G01R19/00

CPC分类号： G01R13/347

摘要： An electro-optic sampler utilizes a Pockels cell comprising an electro-optic crystal and a separate, removable sample carrier having an electrical transmission line affixed thereto to provide an electric field accessible to the optical sampling pulses. In the present system, a device under test is bonded to the removable sample carrier. The electro-optic crystal is not bonded to the carrier. Rather, means are provided for the electro-optic crystal to releasably engage the sample carrier and its affixed electrical transmission lines. Upon completion of a test, the carrier may be removed from the system with the device-under-test affixed thereto, and the same electro-optic crystal may be utilized in conjunction with another removable sample carrier having another device under test affixed thereto.

摘要翻译： 电光采样器利用包括电光晶体的Pockels单元和附着有电传输线的单独的可移除的样品载体，以提供光采样脉冲可访问的电场。 在本系统中，被测设备被结合到可移除的样品载体上。 电光晶体不结合到载体上。 相反，提供了用于电光晶体以释放地接合样品载体及其固定的电传输线的装置。 在完成测试之后，载体可以被附着在其上的被测器件从系统中移除，并且相同的电光晶体可以与另一个可移动的样品载体结合使用，其中另一个可移除的样品载体具有附加在其上的另一个被测试的器件。

公开(公告)号：US07518095B2

公开(公告)日：2009-04-14

申请号：US12048514

申请日：2008-03-14

申请人： Keith W. Forsyth

发明人： Keith W. Forsyth

IPC分类号： H03F3/08

CPC分类号： G01J1/44

摘要： A method and apparatus for providing non-linear, passive quenching of avalanche currents in Geiger-mode avalanche photodiodes (APDs) is provided. A non-linear, passive, current-limiting device is connected in series with the APD and a bias source. The non-linear, passive, current-limiting device rapidly quenches avalanche currents generated by the APD in response to an input photon and resets the APD for detecting additional photons, using a minimal number of components. The non-linear, passive, current-limiting device could comprise a field-effect transistor (FET), as well as a junction FET (JFET) a metal-oxide semiconductor FET (MOSFET), or a current-limiting diode (CLD) connected in series with the APD and the bias source.

摘要翻译： 提供了一种用于在盖革模式雪崩光电二极管（APD）中提供雪崩电流的非线性，无源猝熄的方法和装置。 非线性，无源，限流器件与APD和偏置源串联连接。 非线性，无源，限流装置响应于输入光子快速地猝灭由APD产生的雪崩电流，并且使用最少数量的组件来复位用于检测附加光子的APD。 非线性，无源，限流器件可以包括场效应晶体管（FET）以及结FET（JFET），金属氧化物半导体FET（MOSFET）或限流二极管（CLD） 与APD和偏置源串联连接。

公开(公告)号：US06323491B1

公开(公告)日：2001-11-27

申请号：US09442378

申请日：1999-11-17

申请人： Keith W. Forsyth

发明人： Keith W. Forsyth

IPC分类号： G01J142

CPC分类号： G01J1/429

摘要： A corona detector for detecting a corona associated with a remote object under outdoor daylight conditions. A selective optical filter filters light from the remote object, wherein the optical filter passes one or more of the corona emission bands centered at wavelengths below approximately 290 nanometers (nm) and rejects radiation at wavelengths above approximately 290 nm. A operatively coupled to the optical filter forms an image of the remote object, the lens having high transmissivity in the ultraviolet spectrum.

摘要翻译： 一种用于在室外日光条件下检测与远程物体相关联的电晕的电晕检测器。 选择性滤光器对来自远程物体的光进行滤光，其中光学滤光器将一个或多个以低于大约290纳米（nm）的波长为中心的电晕发射波段通过，并且抑制高于约290nm波长的辐射。 可操作地耦合到滤光器的A形成远程物体的图像，该透镜在紫外光谱中具有高透射率。

公开(公告)号：US5886344A

公开(公告)日：1999-03-23

申请号：US890920

申请日：1997-07-10

申请人： Keith W. Forsyth

发明人： Keith W. Forsyth

IPC分类号： G01N21/25 ,  G01R31/12 ,  G02B23/12 ,  H01J40/14

CPC分类号： G01R31/1218 ,  G02B23/12

摘要： A corona detector for detecting a corona associated with a remote object. In one embodiment, the corona detector employs an optical filter having at least one passband centered at a wavelength corresponding with one of the molecular nitrogen emission spectrum second positive emission lines for filtering light from the remote object. A lens operatively coupled to the optical filter forms an image of the remote object, the lens having high transmissivity in the ultraviolet spectrum.

摘要翻译： 用于检测与远程物体相关联的电晕的电晕检测器。 在一个实施例中，电晕检测器采用光滤波器，该滤光器具有至少一个以对应于分子氮发射光谱第二正发射线之一的波长为中心的通带，用于过滤来自远端物体的光。 可操作地耦合到滤光器的透镜形成远程物体的图像，该透镜在紫外光谱中具有高透射率。

公开(公告)号：US20080217521A1

公开(公告)日：2008-09-11

申请号：US12048514

申请日：2008-03-14

申请人： Keith W. Forsyth

发明人： Keith W. Forsyth

IPC分类号： G01J1/44

CPC分类号： G01J1/44

摘要： A method and apparatus for providing non-linear, passive quenching of avalanche currents in Geiger-mode avalanche photodiodes (APDs) is provided. A non-linear, passive, current-limiting device is connected in series with the APD and a bias source. The non-linear, passive, current-limiting device rapidly quenches avalanche currents generated by the APD in response to an input photon and resets the APD for detecting additional photons, using a minimal number of components. The non-linear, passive, current-limiting device could comprise a field-effect transistor (FET), as well as a junction FET (JFET) a metal-oxide semiconductor FET (MOSFET), or a current-limiting diode (CLD) connected in series with the APD and the bias source.

摘要翻译： 提供了一种用于在盖革模式雪崩光电二极管（APD）中提供雪崩电流的非线性，无源猝熄的方法和装置。 非线性，无源，限流器件与APD和偏置源串联连接。 非线性，无源，限流装置响应于输入光子快速地猝灭由APD产生的雪崩电流，并且使用最少数量的组件来复位用于检测附加光子的APD。 非线性，无源，限流器件可以包括场效应晶体管（FET）以及结FET（JFET），金属氧化物半导体FET（MOSFET）或限流二极管（CLD） 与APD和偏置源串联连接。

公开(公告)号：US07361882B2

公开(公告)日：2008-04-22

申请号：US11106058

申请日：2005-04-14

申请人： Keith W. Forsyth

发明人： Keith W. Forsyth

IPC分类号： H03F3/08

CPC分类号： G01J1/44

摘要： A method and apparatus for providing non-linear, passive quenching of avalanche currents in Geiger-mode avalanche photodiodes (APDs) is provided. A non-linear, passive, current-limiting device is connected in series with the APD and a bias source. The non-linear, passive, current-limiting device rapidly quenches avalanche currents generated by the APD in response to an input photon and resets the APD for detecting additional photons, using a minimal number of components. The non-linear, passive, current-limiting device could comprise a field-effect transistor (FET), as well as a junction FET (JFET) a metal-oxide semiconductor FET (MOSFET), or a current-limiting diode (CLD) connected in series with the APD and the bias source.

摘要翻译： 提供了一种用于在盖革模式雪崩光电二极管（APD）中提供雪崩电流的非线性，无源猝熄的方法和装置。 非线性，无源，限流器件与APD和偏置源串联连接。 非线性，无源，限流装置响应于输入光子快速地猝灭由APD产生的雪崩电流，并且使用最少数量的组件来复位用于检测附加光子的APD。 非线性，无源，限流器件可以包括场效应晶体管（FET）以及结FET（JFET），金属氧化物半导体FET（MOSFET）或限流二极管（CLD） 与APD和偏置源串联连接。

公开(公告)号：US06476396B1

公开(公告)日：2002-11-05

申请号：US09545419

申请日：2000-04-07

申请人： Keith W. Forsyth

发明人： Keith W. Forsyth

IPC分类号： G01J142

CPC分类号： G01J1/42

摘要： An electrical discharge measurement device for non-contact measurement of an electrical discharge having a discharge magnitude. The electrical discharge causes a corresponding emission of optical radiation. The electrical discharge measurement device has a light-collecting device for forming an image from the optical radiation from the electrical discharge, and an optical filter operatively coupled to the light-collecting device for preferentially selecting wavelengths at which the electrical discharge emits relatively intense optical radiation. An optical detector receives light from the light-collecting device and filtered by the optical filter for converting the filtered light to an electrical signal. An electronic signal-processing device provides, based on the electrical signal, a quantitative discharge measurement related to the magnitude of the electrical discharge.

摘要翻译： 一种用于非接触式测量具有放电量的放电的放电测量装置。 放电导致光辐射的相应发射。 放电测量装置具有用于从放电的光学辐射形成图像的光收集装置，以及可操作地耦合到光收集装置的光学滤波器，用于优先选择放电发射相对强烈的光辐射的波长 。 光学检测器接收来自光收集装置的光并被滤光器滤波，以将滤波的光转换成电信号。 电子信号处理装置基于电信号提供与放电的幅度有关的定量放电测量。

公开(公告)号：US6150652A

公开(公告)日：2000-11-21

申请号：US261532

申请日：1999-03-03

申请人： Keith W. Forsyth

发明人： Keith W. Forsyth

IPC分类号： G02B23/12 ,  H01J40/14

CPC分类号： G02B23/12

摘要： A corona detector for detecting a corona associated with a remote object. In one embodiment, the corona detector employs an optical filter having at least one passband centered at a wavelength corresponding with one of the molecular nitrogen emission spectrum second positive emission lines in the visible spectrum for filtering light from the remote object. A lens operatively coupled to the optical filter forms an image of the remote object, the lens having high transmissivity in the visible spectrum.

摘要翻译： 用于检测与远程物体相关联的电晕的电晕检测器。 在一个实施例中，电晕检测器采用光滤波器，其具有至少一个以可见光谱中的分子氮发射光谱第二正发射线之一的波长为中心的通带，用于过滤来自远程物体的光。 可操作地耦合到滤光器的透镜形成远程物体的图像，该透镜在可见光谱中具有高透射率。