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    Color sensor simulating standard source illuminant
    71.
    发明授权
    Color sensor simulating standard source illuminant 失效
    模拟标准光源的颜色传感器

    公开(公告)号：US5642189A

    公开(公告)日：1997-06-24

    申请号：US489750

    申请日：1995-06-12

    Applicant: Mark J. Alguard

    Inventor： Mark J. Alguard

    IPC: G01J3/10 ,  G01J3/50 ,  G01N21/25 ,  G01N21/86 ,  G01N21/88 ,  G01N21/89 ,  G01N21/892 ,  G01N21/93 ,  G01N21/27 ,  G01N21/64

    CPC classification number: G01J3/50 ,  G01J3/0259 ,  G01J3/10 ,  G01J3/502 ,  G01J3/524 ,  G01N21/255 ,  G01N21/86

    Abstract: Disclosed is an apparatus for measuring on-line the color and color-related properties of a moving sheet. Contrast ratio reflectance measurements are made for providing opacity corrections substantially in real time for a full color spectrum. An optical color sensor in accordance with the invention includes a pair of synchronized spectrometers, the first spectrometer being aligned to view a region of the sheet backed with a highly reflective ("white") material and the second spectrometer being aligned to view a region of the sheet backed with a highly absorptive ("black") material. The use of two spectrometers permits substantially simultaneous "black" and "white" measurements for a full color spectrum. The optical color sensing system further includes two light sources, a flashlamp and a continuously energized tungsten filament lamp. Light beams from the two sources are combined to form a sheet-illuminating third beam approximating the D65 standard source. The intensity of the flashlamp is electronically controlled to maintain the balance of UV to visible light that characterizes the standard source. The color sensor further includes a sheet backing system including a rotatable standard wheel carrying a white standard tile. Provision is made to permit rotation of the standard wheel and to standardize the sensor off-sheet while maintaining isolation of the white standard tile from the paper mill environment. The sheet backing system includes a paper guide plate defining an annular vortex space into which air is introduced from a pressurized source. A low pressure region thereby produced in the vortex space draws the paper sheet toward the guide plate. At the same time, circulating air spirals outwardly from the vortex space to form a thin air film or air bearing between the sheet and the paper guide. Sheet flutter is thereby minimized and damage to the sheet is prevented.

    Abstract translation: 公开了一种用于在线测量移动片材的颜色和颜色相关性质的装置。 对比度反射率测量用于为全色谱实质上实时提供不透明度校正。 根据本发明的光学颜色传感器包括一对同步的光谱仪，第一光谱仪被对准以观察具有高反射（“白”）材料的片材的区域，并且第二光谱仪被对准以观察 该片材具有高吸收性（“黑色”）材料。 使用两个光谱仪可以实现全色同步的“黑色”和“白色”测量。 光学颜色感测系统还包括两个光源，闪光灯和连续通电的钨丝灯。 来自两个源的光束被组合以形成近似D65标准源的片状照明第三光束。 闪光灯的强度是电子控制的，以保持紫外线到可见光的平衡，表征标准源。 该颜色传感器还包括一个片材背衬系统，其包括一个承载白色标准砖的可旋转的标准轮。 规定允许标准轮的旋转并标准化传感器脱模，同时保持白色标准砖与造纸厂环境的隔离。 片材背衬系统包括限定了从加压源引入空气的环形涡流空间的导纸板。 由此在涡流空间中产生的低压区将纸张朝向引导板拉出。 同时，循环空气从涡流空间向外螺旋形成在薄片和导纸板之间形成薄的空气薄膜或空气轴承。 因此，片材颤动最小化并且防止了片材损坏。

    Remote color measurement device
    74.
    发明授权
    Remote color measurement device 失效
    远程颜色测量装置

    公开(公告)号：US4881811A

    公开(公告)日：1989-11-21

    申请号：US156471

    申请日：1988-02-16

    Applicant: John K. O'Brien

    Inventor： John K. O'Brien

    IPC: A61C19/10 ,  G01J3/02 ,  G01J3/08 ,  G01J3/46 ,  G01N21/25

    CPC classification number: G01J3/02 ,  A61C19/10 ,  G01J3/0218 ,  G01J3/0251 ,  G01J3/08 ,  G01J3/46 ,  G01J3/502 ,  G01J3/508 ,  G01J3/524 ,  G01N21/255 ,  G01N2021/4742 ,  G01N2021/4752 ,  G01N2201/065 ,  G01N2201/084

    Abstract: A probe, for use with a spectrophotometer, which senses the reflectance of a sample remote from the spectrophotometer. The probe includes a housing having a probe portion positionable proximate the sample, and an integrating chamber disposed within the probe housing and having a radiation input port, a sample port for passing diffused radiation to the sample and returning reflected radiation from the sample, a reference port, and an exit port to receive radiation reflected from the sample through the sample port. The probe further includes a guide for directing radiation to the radiation input port from a radiation source, and an element, responsive to the exit port and the reference port, for selectively conveying reflected radiation from the sample and the wall of the integrating chamber in the probe to the remote spectrophotometer.

    Abstract translation: 用于分光光度计的探针，用于检测远离分光光度计的样品的反射率。 探针包括具有靠近样品定位的探针部分的壳体和设置在探针壳体内并具有辐射输入端口的积分室，用于将扩散的辐射传递到样品并返回来自样品的反射辐射的采样端口，参考 端口和出口，用于接收从样品通过样品端口反射的辐射。 探头还包括用于将辐射从辐射源引导到辐射输入端口的引导件，以及响应于出口和参考端口的元件，用于选择性地将反射的辐射从样品和积分室的壁传递到 探头到远程分光光度计。

    Measuring elements of closed circuit systems for controlling-correcting the print in offset printing machines
    76.
    发明授权
    Measuring elements of closed circuit systems for controlling-correcting the print in offset printing machines 失效
    闭路系统的测量元件用于控制胶版印刷机中的印刷

    公开(公告)号：US4752892A

    公开(公告)日：1988-06-21

    申请号：US315647

    申请日：1981-10-27

    Applicant: Manuel Julian Lecha

    Inventor： Manuel Julian Lecha

    IPC: B41F33/00 ,  G01J3/20 ,  G01J3/46 ,  G06F15/40

    CPC classification number: B41F33/0045 ,  G01J3/46 ,  G01J3/502 ,  G01J3/20

    Abstract: An improvement in the measuring elements of closed circuit systems for controlling-correcting printing in offset printing machines is provided. The values of measurements are amplified, analogically commutated, converted from analog to digital form, and then microprocessed so as to be compared with standard values established in a memory program provided for each one of the valves controlling the printers block of each one of the printing bodies. A reading is taken decomposed into three variables, each one of which corresponds to one of the three basic colors of the visible spectrum in which the light from the colored stain is diffracted by means of a ROWLAND diffraction grating in which there is reflected the light from optical fibers arranged at 45.degree. angles with respect to the printing paper, and which direct a beam of light on the colored stain. At the point of convergence of each one of the diffracted colors, there is arranged a photo pickup device whose signal is amplified by a logarithmic amplifier and connnected to a digital signal which is sent to a microprocessor for processing.

    Abstract translation: 提供了一种用于胶印机中的控制校正打印的闭路系统的测量元件的改进。 测量的值被放大，类比地换算，从模拟形式转换成数字形式，然后进行微处理，以便与为控制每一个打印的打印机块的每个阀提供的存储器程序中建立的标准值进行比较 身体。 读取被分解为三个变量，每个变量对应于可见光谱的三种基本颜色之一，其中来自着色染色体的光通过ROWLAND衍射光栅衍射，其中反射来自 相对于打印纸布置成45度角的光纤，并且在彩色污渍上引导光束。 在每个衍射颜色的会聚点处，布置有一个光拾取装置，其信号由对数放大器放大并连接到被发送到微处理器进行处理的数字信号。

    COMPACT WIDE FIELD IMAGER FOR LASER DETECTION
    80.
    发明公开
    COMPACT WIDE FIELD IMAGER FOR LASER DETECTION 审中-公开

    公开(公告)号：US20230296432A1

    公开(公告)日：2023-09-21

    申请号：US18200707

    申请日：2023-05-23

    Applicant: Marek Kowarz

    Inventor： Marek Kowarz

    IPC: G01J1/42 ,  G01J1/44 ,  G01J1/04 ,  G01J3/50 ,  G01S3/781

    CPC classification number: G01J1/4257 ,  G01J1/44 ,  G01J1/0407 ,  G01J3/502 ,  G01S3/781 ,  G01J2001/448

    Abstract: An apparatus for characterization of one or more light sources over a field of view has an image relay disposed to relay a first image plane to a second image plane. An aperture defines the field of view at the first image plane. A diffraction grating in the path of light through the aperture is configured to form, on the first image plane, for at least one light source, a light pattern having at least two diffraction orders of light from the corresponding light source. An image sensor array is configured to provide image data from the light pattern at the second image plane.

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