Color measurement instrument
    102.
    发明申请

    公开(公告)号:US20060152725A1

    公开(公告)日:2006-07-13

    申请号:US11370670

    申请日:2006-03-08

    Abstract: An LED-based color measurement instrument including an illumination system and a sensing system. The illumination system includes modulated LEDs and a temperature control system for regulating the temperature of the LEDs, thereby improving the consistency of their performance. The sensing system includes a photodiode, a transimpedance amplifier, and an integrator in the first stage to cancel the effect of ambient light on the output of the first stage. The sensing system also includes a lens system for imaging a target area of the target sample onto the photo sensor in a manner so that the product of the target area times the solid angle captured by the lens system is generally uniform over a selected range of distances, thereby reducing the positional sensitivity of the instrument with respect to the target sample.

    Device for measuring light-activated fluorescence and its use

    公开(公告)号:US20060131513A1

    公开(公告)日:2006-06-22

    申请号:US11052399

    申请日:2005-02-07

    Applicant: Matthias Lau

    Inventor: Matthias Lau

    Abstract: The invention relates to a device for measuring light-activated fluorescence of at least one coating that contains a fluorescent material, and its use for measuring fluid materials which cause fluorescence-quenching in at least one of the fluorescent coatings. To activate the fluorescence, at least one first light wave-guide is directed onto at least one coating applied to a support and the fluorescent light is directed at a detector by means of at least one-second light wave-guide, in order to determine the intensity of the fluorescent light. The end faces of the different fluorescent light wave guides are then arranged to have overlapping entry and/or exit cones and/or be of a shape substantially identical to the at least one coating containing a fluorescent material, in such a way that an accurate measurement of the fluorescence intensity can be attained, and that the light source(s), light wave guides and the detector(s) are lodged in a measuring head.

    High performance miniature spectrometer
    104.
    发明授权
    High performance miniature spectrometer 失效
    高性能微型光谱仪

    公开(公告)号:US07034935B1

    公开(公告)日:2006-04-25

    申请号:US10394662

    申请日:2003-03-24

    Abstract: An infrared spectrometer is described wherein a detector array is optically coupled to a slab waveguide structure. A focal plane is provided outside of the output face of the slab waveguide structure and the detector array is mounted onto the slab waveguide structure at a fixed distance from the output face on the output focal plane.

    Abstract translation: 描述了一种红外光谱仪,其中检测器阵列光学耦合到平板波导结构。 焦平面设置在平板波导结构的输出面的外侧,检测器阵列以与输出焦平面上的输出面一定距离的方式安装在平板波导结构上。

    Arsenic meter
    107.
    发明申请
    Arsenic meter 失效
    砷米

    公开(公告)号:US20060007445A1

    公开(公告)日:2006-01-12

    申请号:US10523568

    申请日:2003-08-21

    Abstract: A field test-kit for analyzing arsenic concentration in water samples is provided. The kit includes a portable infrared beam photometer for measuring light absorbance in aqueous specimens. An infrared light emitting diode is configured to direct a beam of light through a specimen. A photodetector diode measures the intensity of light passing through the specimen. The photodetector output voltages relate to the light absorbed in the specimen and are displayed on a liquid crystal display screen. The kit is assembled using off-the-shelf electronic and opto-electronic components that have low power requirements. Dry cell batteries or solar cells power the kit. To test for arsenic, molybdenum based chemistries are used to selectively bind and convert arsenates and phosphates in the specimen into molybdenum-blue color complexes. The light absorbance of a specimen with both arsenates and phosphates bound in molybdenum-blue color complexes is compared to that of a reference specimen in which phosphates but not arsenates are bound and converted. The differential light absorbance of the two specimens is used to arrive at a quantitative value for the arsenic concentration in the water sample.

    Abstract translation: 提供了一种用于分析水样中砷浓度的现场测试工具。 该套件包括便携式红外光束光度计,用于测量水样中的吸光度。 红外发光二极管被配置为引导光束通过样本。 光检测器二极管测量通过样品的光的强度。 光检测器输出电压与样品中吸收的光有关,并显示在液晶显示屏上。 该套件使用具有低功耗要求的现成的电子和光电组件进行组装。 干电池或太阳能电池为套件供电。 为了测试砷,使用钼基化学物质选择性地将样品中的砷酸盐和磷酸盐结合并转化成钼蓝色复合物。 将与钼蓝色复合体中结合的砷酸盐和磷酸盐的样品的吸光度与其中磷酸盐而不是砷酸盐结合和转化的参考样品的吸光度进行比较。 使用两个样品的差分吸光度来获得水样中砷浓度的定量值。

    Method & apparatus for the stabilization of spectrometric transducers
    108.
    发明申请
    Method & apparatus for the stabilization of spectrometric transducers 审中-公开
    用于光谱测量传感器稳定的方法和装置

    公开(公告)号:US20050280824A1

    公开(公告)日:2005-12-22

    申请号:US11038490

    申请日:2005-01-21

    CPC classification number: G01J3/12 G01J3/0286

    Abstract: The invention provides a method for stabilizing a spectrometric transducer for an optical spectrum measuring instrument by obtaining an instantaneous central wavelength of a thermally controlled tunable filter of the instrument, calibrating for a selected ambient temperature, determining a heat variance of the filter and controlling the filter to compensate for heat variance.

    Abstract translation: 本发明提供了一种用于通过获得仪器的热控可调滤波器的瞬时中心波长来稳定光谱测量仪器的光谱测量传感器的方法,校准所选择的环境温度,确定滤波器的热方差并控制滤波器 以补偿热差异。

    Diffraction grating element
    110.
    发明申请
    Diffraction grating element 有权
    衍射光栅元件

    公开(公告)号:US20050231805A1

    公开(公告)日:2005-10-20

    申请号:US11147381

    申请日:2005-06-08

    Abstract: The present invention provides a diffraction grating element that allows the temperature control mechanism to be dispensed with or simplified. The diffraction grating element of the present invention comprises a transparent plate having a first surface and a second surface that are substantially parallel with one another; and a diffraction grating which is formed on a first surface side with respect to the second surface and is substantially parallel with the first surface. At any temperature within a temperature range −20° C. to +80° C., the sum of the rate of change in the period per unit length of the diffraction grating with respect to a temperature change, and the temperature coefficient of the refractive index of a medium that surrounds the diffraction grating element is 0.

    Abstract translation: 本发明提供一种能够省略或简化温度控制机构的衍射光栅元件。 本发明的衍射光栅元件包括具有彼此基本平行的第一表面和第二表面的透明板; 以及衍射光栅,其相对于所述第二表面形成在第一表面侧上并且基本上与所述第一表面平行。 在-20°C至+ 80°C的温度范围内的任何温度下,衍射光栅相对于温度变化的每单位长度的周期变化率和折射率的温度系数之和 围绕衍射光栅元件的介质的折射率为0。

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