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    Variable filter spectrophotometers
    1.
    发明授权
    Variable filter spectrophotometers 失效
    可变过滤分光光度计

    公开(公告)号：US5526121A

    公开(公告)日：1996-06-11

    申请号：US5320

    申请日：1993-01-15

    Applicant: James R. Sandifer ,  David S. Uerz

    Inventor： James R. Sandifer ,  David S. Uerz

    IPC: G01J3/42 ,  G01J1/44 ,  G01J3/08 ,  G01J3/28 ,  G01J3/51 ,  G01N21/31 ,  G01N21/35 ,  G02B26/04 ,  G01N21/25 ,  G01J3/00

    CPC classification number: G01J3/42 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/0232 ,  G01J3/0235 ,  G01J3/0289 ,  G01J3/08 ,  G01J3/44 ,  G01N21/314 ,  G02B26/04 ,  G01J2001/4242 ,  G01J2003/1213 ,  G01J2003/2866 ,  G01N2021/3133 ,  G01N2021/3159 ,  G01N2021/3174 ,  G01N2021/4742 ,  G01N21/359 ,  G01N2201/0826 ,  G01N2201/1283

    Abstract: A variable filter spectrophotometer, for use with sample and reference; has a main member, a filter unit, a drive, a detector, a light distribution system, and a clamping circuit. The main member defines first and second beam paths, which are intersected by the filter unit. The filter unit has filtering and opaque portions. The filter unit is continuously movable relative to the beam paths in a repeating cycle from a first filtering relation in which the filtering portion is interposed in the first beam path and the opaque portion completely blocks the second beam path, to a first dark relation in which both beam paths are blocked, to a second filtering relation in which the filtering portion is interposed in the second beam path and the first beam path is completely blocked, and to a second dark relation in which both beam paths are completely blocked. The filtering portion is variably transmissive along a direction of movement of the filter unit. The drive continuously moves the filter unit relative to the beam paths. The detector produces a signal responsive to light received. The light distribution system directs light separately to and from the sample and reference, to and from the beam paths, and to the detector. The clamping circuit clamps the signal produced by the detector during the filtering relations to the signal produced by the detector during the dark relations.

    Abstract translation: 可变过滤分光光度计，用于样品和参考; 具有主构件，过滤单元，驱动器，检测器，配光系统和钳位电路。 主要部件限定了由过滤器单元相交的第一和第二光束路径。 过滤器单元具有过滤和不透明部分。 过滤器单元可以从第一过滤关系的重复循环中相对于光束路径连续移动，其中过滤部分插入在第一光束路径中，而不透明部分完全阻挡第二光束路径到第一黑暗关系，其中 两个光束路径被阻挡到第二滤波关系，其中滤波部分插入在第二光束路径中并且第一光束路径被完全阻挡，并且到第二暗关系，其中两个光束路径被完全阻挡。 过滤部分沿着过滤器单元的移动方向是可变的。 驱动器相对于光束路径连续地移动滤光单元。 检测器产生响应于接收到的光的信号。 光分配系统将光分别引导到样品和从样品引导，参考和从光束路径引导到检测器。 钳位电路在滤波关系期间将由检测器产生的信号钳位在由暗检测器产生的信号中。

    Optical read system and immunoassay method
    2.
    发明授权
    Optical read system and immunoassay method 失效
    光学读取系统和免疫测定方法

    公开(公告)号：US4977325A

    公开(公告)日：1990-12-11

    申请号：US378647

    申请日：1989-07-12

    Applicant: Mark S. Bowen ,  Stephen D. Fantone ,  Bruce E. Miller ,  Duane T. Thompson

    Inventor： Mark S. Bowen ,  Stephen D. Fantone ,  Bruce E. Miller ,  Duane T. Thompson

    IPC: G01N21/64 ,  G01N33/536

    CPC classification number: G01N21/645 ,  G01N2021/6471 ,  G01N2021/6478 ,  G01N2201/1283

    Abstract: A low cost optical system which incorporates a low ultraviolet output tungsten halogen light source and solid state photodetectors and circuitry in such a way as to provide reliable fluorometric test results. The attainment of reliable results using such components is made possible by incorporating highly ultraviolet transmissive optics to maximize ultraviolet light throughput and by using solid state circuitry together with a filter wheel having both light blocking and light passing regions in a manner which fully accounts for noise and dark signals associated with solid state photodetectors.

    Abstract translation: 一种低成本的光学系统，其结合了低紫外线输出钨卤素光源和固态光电检测器和电路，以提供可靠的荧光测试结果。 通过结合高度紫外线透射的光学器件来最大程度地提高紫外线光通量，并且通过使用固态电路与具有遮光和光通过区域的滤光轮以完全考虑噪声的方式并使其成为可靠的结果， 与固体光电探测器相关的暗信号。

    OPTICAL READ SYSTEM AND IMMUNOASSAY METHOD
    4.
    发明公开
    OPTICAL READ SYSTEM AND IMMUNOASSAY METHOD 失效
    光学阅读系统。

    公开(公告)号：EP0438550A1

    公开(公告)日：1991-07-31

    申请号：EP90910213.0

    申请日：1990-06-12

    Applicant: PB Diagnostic Systems, Inc.

    Inventor： BOWEN, Mark, Stander ,  FANTONE, Stephen, D. ,  MILLER, Bruce, E. ,  THOMPSON, Duane, T.

    IPC: G01N21 ,  G01N33

    CPC classification number: G01N21/645 ,  G01N2021/6471 ,  G01N2021/6478 ,  G01N2201/1283

    Abstract: Il s'agit d'un système optique à faible coût qui comprend une source de lumière halogène tungstène à faible sortie d'ultraviolets et des photodetecteurs à semiconducteurs ainsi que des circuits capables de fournir des résultats d'essai fluorométriques fiables. L'obtention de résultats fiables en utilisant de tels composants est rendue possible en intégrant une optique à forte transmission d'ultraviolets pour maximiser la lumière ultraviolette passée et en utilisant des circuits à semiconducteurs en association avec une roue à filtres ayant tous deux des zones d'arrêt et des zones de passage de la lumière de sorte à tenir entièrement compte des signaux de bruit et d'obscurité associés aux photodétecteurs à semiconducteurs.

    OPTICAL READ SYSTEM
    5.
    发明授权
    OPTICAL READ SYSTEM 失效
    光学阅读系统。

    公开(公告)号：EP0438550B1

    公开(公告)日：1994-08-31

    申请号：EP90910213.9

    申请日：1990-06-12

    Applicant: BEHRING DIAGNOSTICS INC.

    Inventor： BOWEN, Mark, Stander ,  FANTONE, Stephen, D. ,  MILLER, Bruce, E. ,  THOMPSON, Duane, T.

    IPC: G01N21/64

    CPC classification number: G01N21/645 ,  G01N2021/6471 ,  G01N2021/6478 ,  G01N2201/1283

    Abstract: A low cost optical system which incorporates a low ultraviolet output tungsten halogen light source and solid state photodetectors and circuitry in such a way as to provide reliable fluorometric test results. The attainment of reliable results using such components is made possible by incorporating highly ultraviolet transmissive optics to maximize ultraviolet light throughput and by using solid state circuitry together with a filter wheel having both light blocking and light passing regions in a manner which fully accounts for noise and dark signals associated with solid state photodetectors.

    Specimen processing and analyzing systems and methods using photometry
    7.
    发明授权
    Specimen processing and analyzing systems and methods using photometry 失效
    使用光度法的样品处理和分析系统和方法

    公开(公告)号：US5345395A

    公开(公告)日：1994-09-06

    申请号：US785800

    申请日：1991-10-31

    Applicant: Christopher D. Griner

    Inventor： Christopher D. Griner

    IPC: G01N21/17 ,  G01N21/25 ,  G01N21/27 ,  G01N35/02 ,  G01N35/04 ,  G01N35/10

    CPC classification number: G01N21/253 ,  G01N21/274 ,  G01N35/028 ,  G01N2201/0407 ,  G01N2201/0446 ,  G01N2201/08 ,  G01N2201/1283

    Abstract: A system uses a photometer that establishes an optical channel between a light emitter and a light detector. The photometer analyses a specimen while it occupies a well in a tray. A movable platform transports the tray to the optical channel for analysis and removes the tray from the optical channel after analysis. The system calibrates the movable platform to assure proper alignment between the specimen and the photometric apparatus used to analyzed the specimen. The system also calibrates the optical channel without use of an external reference.

    Abstract translation: 系统使用在光发射器和光检测器之间建立光通道的光度计。 光度计分析样品时，它在托盘中占有很好的位置。 可移动平台将托盘运送到光通道进行分析，并在分析后从光通道中移除托盘。 系统校准可移动平台，以确保样品与用于分析样品的光度测量仪器之间的正确对准。 该系统还可以校准光通道而不使用外部参考。

    Optical analyzer for agricultural products
    8.
    发明授权
    Optical analyzer for agricultural products 失效
    农业产品光学分析仪

    公开(公告)号：US3861788A

    公开(公告)日：1975-01-21

    申请号：US42086373

    申请日：1973-12-03

    Applicant: NEOTEC CORP

    Inventor： WEBSTER DONALD R

    IPC: G01J1/18 ,  G01J3/12 ,  G01J3/28 ,  G01N21/31 ,  G01N21/35 ,  G01N33/10 ,  G02B5/28

    CPC classification number: G01N33/10 ,  G01J3/12 ,  G01J2001/182 ,  G01J2003/1243 ,  G01J2003/2866 ,  G01N21/314 ,  G01N21/35 ,  G01N21/3563 ,  G01N21/4738 ,  G01N2021/3129 ,  G01N2021/3159 ,  G01N2021/4769 ,  G01N2201/1283

    Abstract: An automatic test instrument for gaging the percentage of various constituents in organic substances by comparing the reflective optical density of the subject at various wavelengths. Narrow band optical filters are connected together in the form of a rotatable paddle wheel positioned so that the filters can be individually swept through the incident light path between the specimen and wideband light source. As the filter wheel turns, the band of light passed by each filter is progressively shifted with the changing angle of the filter relative to the light path. The filter wheel configuration includes opaque vanes extending from the ends of the filters to periodically interrupt the passage of light to the specimen. Photocells are positioned to sense the level of light reflected from the specimen. The output of the photocells is sampled at predetermined times relative to the rotation of the filter wheel to yield values indicative of reflected intensity at certain wavelengths. Using these values, an electronic circuit in one embodiment calculates three optical density difference values corresponding to moisture, protein and oil content of the specimen. The difference values are automatically inserted in three linear equations which are solved to obtain readings representing the true percentages of oil, water and protein contained in the specimen. Each time a new specimen is loaded for testing, the instrument is automatically calibrated against a standard sample, preferably Teflon (Trademark). The output of the photocells is amplified in a special circuit which subtracts the level of dark period current from the output when the photocells are illuminated.

    Abstract translation: 一种自动测试仪器，用于通过比较不同波长的受试者的反射光密度来测量有机物质中各种成分的百分比。 窄带光学滤波器以可旋转的桨轮的形式连接在一起，其定位成使得滤光器可以被单独扫过样品和宽带光源之间的入射光路。 当滤光轮转动时，每个滤光片通过的光束随着滤光片相对于光路的变化角度逐渐变化。 过滤轮配置包括从过滤器的端部延伸的不透明的叶片，以周期性地中断通向样品的光。 光电池被定位以感测从样品反射的光的水平。 光电池的输出在相对于滤光轮的旋转的预定时间被采样，以产生指示在某些波长处的反射强度的值。 使用这些值，一个实施例中的电子电路计算对应于样品的水分，蛋白质和油含量的三个光密度差值。 差值被自动插入三个线性方程中，这些线性方程被求解以获得表示样品中所含的油，水和蛋白质的真实百分比的读数。 每次加载新的样品进行测试时，仪器将自动根据标准样品进行校准，最好是Teflon（商标）。 光电管的输出在特殊电路中被放大，当光电管被照亮时，其从输出中减去暗周期电流的电平。

    Automated systems and assemblies for use in evaluating agricultural products and methods therefor
    10.
    发明授权
    Automated systems and assemblies for use in evaluating agricultural products and methods therefor 有权
    用于评估农产品及其方法的自动化系统和组件

    公开(公告)号：US07830504B2

    公开(公告)日：2010-11-09

    申请号：US12275008

    申请日：2008-11-20

    Applicant: Kevin L. Deppermann ,  Steven H. Modiano ,  Cynthia L. Ludwig ,  Brad D. White ,  Beth J. Calabotta

    Inventor： Kevin L. Deppermann ,  Steven H. Modiano ,  Cynthia L. Ludwig ,  Brad D. White ,  Beth J. Calabotta

    IPC: G01J3/42

    CPC classification number: G01N21/253 ,  G01N21/31 ,  G01N2001/4088 ,  G01N2201/12707 ,  G01N2201/1283 ,  G01N2201/129

    Abstract: Methods and assemblies are provided for evaluating plants for presence of pests. Methods may include separating pests from a plant to produce a sample of pests for analysis, illuminating the sample to produce emitted light from the sample, and comparing the emitted light from the sample to a model to discriminate pests within the sample. Assemblies may include a separating unit operable to separate pests from a plant to produce a sample comprising pests, a light source for illuminating at least part of the sample, and an imaging device adjacent the light source for receiving light from the illuminated sample and creating an image of the sample.

    Abstract translation: 提供了方法和装配，用于评估植物是否存在有害生物。 方法可以包括从植物中分离害虫以产生用于分析的害虫样品，照亮样品以产生来自样品的发射光，并将来自样品的发射光与模型进行比较以区分样品内的害虫。 组件可以包括分离单元，其可操作以将害虫与植物分离以产生包含害虫的样品，用于照射样品的至少一部分的光源和邻近光源的成像装置，用于接收来自照射样品的光并产生 样本的图像。

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