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    VERFAHREN ZUR KORREKTUR VON BILDMESSWERTEN
    13.
    发明公开
    VERFAHREN ZUR KORREKTUR VON BILDMESSWERTEN 有权
    方法校正图像测

    公开(公告)号：EP1805978A1

    公开(公告)日：2007-07-11

    申请号：EP05801762.5

    申请日：2005-10-28

    Applicant: GretagMacbeth AG

    Inventor： EHBETS, Peter ,  KOHLENBRENNER, Adrian ,  FRICK Beat

    IPC: H04N1/028 ,  G01J3/447 ,  G01J3/46 ,  H04N1/00

    CPC classification number: H04N1/02815 ,  G01J3/02 ,  G01J3/0224 ,  G01J3/50 ,  G01J3/51 ,  G01J3/513 ,  G01J2003/468 ,  G01N21/27 ,  G01N21/274

    Abstract: A scanning device for the photoelectric measurement pixel by pixel of a measurement object in the form of a printed sheet comprises a measurement table (MT) for supporting the measurement object, a measurement system movable over the surface of the measurement table for scanning pixel lines of the measurement object, a driving system for moving the measurement system over the measurement object, a measurement and driving control system for the measurement system and the driving system, and a processing system for processing and evaluating the measurement signals generated by the measurement system from the scanned pixels of the measurement object (S). The measurement system comprises a lighting system, a photoelectric reception system and optical means. The lighting system exposes pixels located in strip-shaped lighting regions (15) to light at a standardised range of angles of incidence. The photoelectric reception system comprises a plurality of parallel, mutually spaced apart photoelectric line sensors (21) sensitised to different wavelength ranges by upstream chromatic filters (22). The optical means comprise linear optic arrangements (31) which capture the measurement light reflected by the pixels at a standardised range of angles of incidence and direct the measurement light to each one of the line sensors (21). Crosstalk effects between adjacent pixels are substantially reduced by optical screening and other structural measures. The scanning device makes it possible to scan entire printed sheets at high speed and has a comparatively simple structure. It combines the advantages of the known technology of image-capture appliances but does not have its inherent drawbacks. It is there suited for quality control applications in the graphic industry and for the colorimetric control of printing processes.

    OPTICAL SPECTROMETER
    14.
    发明公开
    OPTICAL SPECTROMETER 审中-公开
    光谱仪

    公开(公告)号：EP1529204A1

    公开(公告)日：2005-05-11

    申请号：EP02749428.5

    申请日：2002-07-12

    Applicant: River Diagnostics B.V.

    Inventor： PUPPELS, Gerwin, Jan

    IPC: G01J3/18 ,  G01J3/447

    CPC classification number: G01J3/18 ,  G01J3/447

    Abstract: Incoming light is spectrally analyzed by diffracting the incoming light with a grating. At least a part of the incoming light is split off so that this part contains mainly one polarization component of the incoming light. It is ensured that this split-off part and a remaining part of the incoming light reach the grating with their polarized component mainly parallel to a main direction of polarization which is diffracted with maximal efficiency by the grating. For this purpose, at least the split-off part is diffracted after being passed through a polarization rotating element.

    IMAGING SPECTROMETER
    15.
    发明公开
    IMAGING SPECTROMETER 有权
    IMAGE管辖谱仪

    公开(公告)号：EP1495293A1

    公开(公告)日：2005-01-12

    申请号：EP03718940.4

    申请日：2003-04-15

    Applicant: Qinetiq Limited

    Inventor： HARVEY, Andrew Robert,Heriot Watt University ,  FLETCHER-HOLMES, David William,Heriot Watt Univ.

    IPC: G01J3/28 ,  G01J3/447 ,  G01J3/51

    CPC classification number: G01J4/04 ,  G01J3/2823 ,  G01J3/447 ,  G01J3/51

    Abstract: An imaging spectrometer (2) is disclosed that comprises imaging means for dividing a received image into two or more spatially separated spectral images and means for detecting each spectral image (4), and is characterised in that the imaging means comprises at least one polarising beam splitter (18, 20, 22; 64, 68, 72). The polarising beam splitter may be a Wollaston prism. In one embodiment of the invention, the imaging means comprises image replication means (12) to produce two or more spatially separated images, and one or more filter elements such as dichroic filters (8) which act to alter the spectral characteristics of one or more of the spatially separated images. In a further embodiment of the invention the imaging means comprises one or more spectral replication means arranged in optical series, each spectral replication means comprising an optical retardation element (62, 66, 70) and a polarising beam splitter (64, 68, 72).

    Spectrum measuring equipment
    16.
    发明公开
    Spectrum measuring equipment 失效
    乐器zur Messung eines Spektrums。

    公开(公告)号：EP0417709A2

    公开(公告)日：1991-03-20

    申请号：EP90117419.3

    申请日：1990-09-10

    Applicant: FUJITSU LIMITED ,  ADVANTEST CORPORATION

    Inventor： Shirasaki, Masataka, c/o Fujitsu Limited ,  Nakajima, Hirochika, c/o Fujitsu Limited ,  Watanabe, Yukimitsu, c/o Advantest Corporation ,  Yamamoto, Rinichiro, c/o Advantest Corporation

    IPC: G01J3/28 ,  G01J3/18 ,  G02B27/28 ,  G01J3/447

    CPC classification number: G01J3/18 ,  G01J3/0224 ,  G02B5/3083 ,  G02B27/283

    Abstract: In spectrum measuring equipment the light to be measured is separated by a double-image polarizing element (12) into two polarized wave components whose planes of polarization perpendicularly cross each other and which have different optical axes, the two polarized wave components are applied to a dispersing element (14) so that their planes of polarization intersect the direction of light separation at ±45° thereto, respectively, and the sum of optical powers of the two polarized wave components separated by the dispersing element (14) is measured by a photodetector (16), whereby spectrum measurement not dependent on the polarization of the light to be measured can be achieved.

    Abstract translation: 在光谱测量装置中，待测光被双图像偏振元件（12）分离成两个偏振面垂直交叉并具有不同光轴的偏振波分量，将两个偏振波分量施加到 分散元件（14），使得它们的偏振面分别与+/- 45°的光分离方向相交，并且由分散元件（14）分离的两个偏振波分量的光功率之和通过 光电检测器（16），由此可以实现不依赖于被测光的偏振的光谱测量。

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