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    Optical transmission spectrometer
    381.
    发明公开
    Optical transmission spectrometer 失效
    光传输光谱仪

    公开(公告)号：EP0367097A3

    公开(公告)日：1991-09-11

    申请号：EP89119868.1

    申请日：1989-10-26

    Applicant: MILES INC.

    Inventor： Dosmann, Andrew J.

    IPC: G02B27/10 ,  G01J3/42 ,  G01J3/10

    CPC classification number: G01J3/10 ,  G01J3/02 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/0262 ,  G01J3/42 ,  G01N21/255 ,  G01N2021/1742 ,  G02B27/1006 ,  G02B27/126

    Abstract: An optical transmission spectrometer for transmission measurements of absorbing and scattering samples includes light sources mounted parallel to each other in a holder. The beams of light eminating from the light sources are directed through a beam-combiner. The beam-combiner includes a first refractive surface at an angle of incidence of 45°. The first refractive surface refracts light toward a common axis. The beam-combiner includes a second refractive surface parallel to the first refractive surface for refracting the beam of light along a common axis parallel to the original direction of the beam of light. The beam-combiner can include additional refractive surfaces for other beams of light to combine the beams of light into a primary beam. The includes a collimating tube extending along the common axis for baffling stray light and directing the primary beam through a sample. A second collimating tube is provided on the side of the sample opposite the first collimating tube for baffling stray light passing through the sample. The second collimating tube directs the primary beam to a detector package mounted in a holder, where the detector viewing area of the sample is limited to that of the primary beam.

    Portable colorimeter and method for characterization of a colored surface
    382.
    发明公开
    Portable colorimeter and method for characterization of a colored surface 失效
    Tragbares Kolorimeter und Verfahren zur Kennzeichnung einer farbigenOberfläche。

    公开(公告)号：EP0375317A2

    公开(公告)日：1990-06-27

    申请号：EP89313197.9

    申请日：1989-12-18

    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY

    Inventor： Steenhoek, Larry E.

    IPC: G01J3/50 ,  G01N21/47 ,  G01J3/36

    CPC classification number: G01J3/50 ,  G01J3/0251 ,  G01J3/0256 ,  G01J3/10 ,  G01J3/463 ,  G01J3/465 ,  G01J3/502 ,  G01J3/504 ,  G01J3/524 ,  G01J2003/466 ,  G01N21/4738 ,  G01N2021/4711 ,  G01N2021/4771

    Abstract: A portable colorimeter for characterizing the optical properties of a colored surface and in particular a colored surface containing metallic or pearlescent particles, which employs three multiangular spectrophotometric measurements to derive color constants for the surface. The colorimeter is a compact integrated unit housing irradiation, detection, control, analysis and display means and employs three illumination angles, preferably -30°, O°, and 65°, and one detection angle, preferably 45°, all measured from the sample normal. The method includes determining the tristimulus values of the color of the sample surface from low resolution spectral reflectance data preferably using twelve detector elements.

    Abstract translation: 用于表征着色表面的光学性质的便携式色度计，特别是含有金属或珠光颗粒的着色表面，其使用三个多角度分光光度测量法来导出表面的颜色常数。 色度计是一个紧凑的一体化单元，容纳照射，检测，控制，分析和显示装置，并采用三个照明角度，优选-30°，0°和65°，一个检测角，最好是45°，全部从样品测量 正常。 该方法包括优选使用十二个检测器元件从低分辨率光谱反射率数据确定样品表面的颜色的三刺激值。

    Spectroradiometer and spectrophotometer
    384.
    发明公开
    Spectroradiometer and spectrophotometer 失效
    Spektralradiometer和Spektralphotometer。

    公开(公告)号：EP0105178A2

    公开(公告)日：1984-04-11

    申请号：EP83108371.2

    申请日：1983-08-25

    Applicant: Li-Cor, Inc.

    Inventor： Middendorf, Lyle Richard ,  Wurm, John Henry ,  Biggs, William Walter

    IPC: G01J3/00 ,  G01J3/06 ,  G01J5/30 ,  G01N21/27

    CPC classification number: G01J3/28 ,  G01J3/0232 ,  G01J3/0256 ,  G01J3/0262 ,  G01J3/027 ,  G01J3/0283 ,  G01J3/0291 ,  G01J3/06 ,  G01J2003/1828 ,  G01N2201/125 ,  G01N2201/127

    Abstract: To provide sufficient sensitivity, spectral resolution and speed of measurement for field environmental measurements in a portable spectroradiometer, a silicon photodiode receives light: (1) having a bandwidth in the range of between 2 and 15 nm (nanometers) from a pivotable concave holographic diffraction grating within the wavelength range of between 250 and 1150 nm at a scanning rate in the range of 20 to 100 nm per second; (2) having stray light of high intensity and undesired frequencies and the shorter wavelength harmonics of the selected frequency range blocked by filters; and (3) having flux of a least 10 microwatts per square meter of diffuser plate for each nanometer of bandwidth. Automatic electrical zeroing is obtained by blocking all light once at the beginning of each scan, obtaining an electrical drift-related signal and using the drift signal to ad- just the measured signal during the scan. Several different sensing interfaces can be used, including a quartz, light fiber probe having at least a 50% packing density and a cone angle of at least 24 degrees. The data and the programming storage is at least 30K bytes but the instrument uses no more than two watts of power when the instrument is not scanning.

    Abstract translation: 为了在便携式分光光度计中提供足够的灵敏度，光谱分辨率和现场环境测量的测量速度，硅光电二极管接收光：（1）具有从可枢转的凹面全息衍射的2至15nm（纳米）范围内的带宽 在波长范围为250〜1150nm之间，扫描速度为20〜100nm /秒; （2）具有高强度和不期望频率的杂散光，并且所选频率范围的较短波长谐波被滤波器阻挡; 和（3）每纳米带宽具有至少10微瓦/平方米扩散板的通量。 通过在每次扫描开始时阻止所有光一次获得自动电调零，获得电漂移相关信号，并使用漂移信号在扫描期间调整测量信号。 可以使用几种不同的感测接口，包括具有至少50％填充密度和至少24度的锥角的石英光纤探针。 数据和编程存储器至少为30K字节，但当仪器未扫描时，仪器的功率不得超过2瓦。

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