公开(公告)号：EP2409125A1

公开(公告)日：2012-01-25

申请号：EP10718491.3

申请日：2010-04-29

Applicant: Schattdecor Ag

Inventor： JASCHUL, Johannes ,  KOSINA, Martin ,  HUMMEL, Kai, Rainer

IPC: G01J3/02 ,  G01J1/04 ,  G01N21/47 ,  G01J3/10

CPC classification number: G01J3/10 ,  G01J1/04 ,  G01J3/0251 ,  G01J3/0254 ,  G01N21/474 ,  G01N21/8983 ,  G01N21/95607

Abstract: An improved method and an improved device for carrying out an optical comparison between at least two samples, preferably by comparing sections that can be selected, is characterized by the following characteristics: the sample (UR, LE, I) that is to be examined and is characterized by a non-uniformity in the structure and/or color is illuminated by diffused light; from the light reflected by the sample (UR, LE, I) to be examined, an interference spectrum is created by means of a spectrometer (23); the interference spectrum created by the spectrometer (23) is depicted on a camera (25, 25'); the interference spectrum obtained in this way and/or values of the sample (I) to be examined derived therefrom are used as sample values which are compared to sample values of a reference sample (UR, LE) obtained accordingly.

公开(公告)号：EP1825436A1

公开(公告)日：2007-08-29

申请号：EP05815604.3

申请日：2005-12-13

Applicant: Akzo Nobel Coatings International BV

Inventor： NJO, Swie, Lan

IPC: G06T7/40 ,  G01J3/51 ,  G01J3/46

CPC classification number: G01N21/4738 ,  G01J3/0251 ,  G01J3/504 ,  G01N21/8422 ,  G01N2021/4735 ,  G01N2021/4771 ,  G01N2201/0632

Abstract: A method for analyzing the visual coarseness of a paint film comprising effect pigments by means of a measuring device having a cavity with reflective inner walls and a sample opening, the device further comprising illumination means for illumination of the cavity and a digital imaging device directed from the cavity to the sample opening and arranged at a distance from the centre normal of the sample opening, the method comprising the following steps: presenting a sample of the paint film to the cavity via the sample opening; illuminating the cavity; activating the imaging device to record an image of the sample; communicating the recorded image data to a computer programmed with image analysis software to analyze the recorded image. The optical axis of the imaging device is set at an angle of 3 - 12 degrees with the centre normal of the sample opening.

公开(公告)号：EP0964244B1

公开(公告)日：2005-10-05

申请号：EP99304615.0

申请日：1999-06-14

Applicant: GretagMacbeth, L.L.C.

Inventor： Weber, William L., ,  Van Aken, Harold, R., ,  Palumbo, Perry A., ,  Corrado, Joseph

IPC: G01N21/47 ,  G01N21/55

CPC classification number: G01N21/474 ,  G01J3/0251 ,  G01J3/0254 ,  G01J3/0294 ,  G01N21/251 ,  G01N2021/555 ,  G01N2021/556

公开(公告)号：EP0781401B1

公开(公告)日：2004-11-24

申请号：EP95932500.2

申请日：1995-09-14

Applicant: X-RITE, INC.

Inventor： BERG, Bernard, J. ,  BAKER, Douglas, V. ,  BOWDEN, David, R. ,  BOES, Thomas, J. ,  ZANDSTRA, Lawrence, D.

IPC: G01J3/50 ,  B41F33/00 ,  G01N21/59

CPC classification number: G01J3/50 ,  G01J3/0251 ,  G01J3/0272 ,  G01J3/51 ,  G01J3/524 ,  G01J2003/2866

Abstract: A colorimeter for reading color bars (403, 404) of printed sheets (401) or the like includes a longitudinally extending base (400) including a paper stop (442) along which a sheet to be tested for color may be positioned. An autonomously operating colorimeter head (410) is moved along the base in a direction parallel to the edge of the sheet by means of an electric motor (600) mounted on the base and driving an helical thread lead screw (418) engaging an X-axis carriage supporting the head. The head is moved by operation of the lead screw in a direction parallel to the edge of the sheet, referred to as the direction of the X-axis. The head includes an electric motor and a Y-axis transport supporting an optics unit (510). The optics unit is moved within the head in a direction parallel to a Y-axis, extending perpendicularly to the X-axis.

公开(公告)号：EP1329708A2

公开(公告)日：2003-07-23

申请号：EP03250187.6

申请日：2003-01-13

Applicant: X-RITE, INC.

Inventor： Berg, Bernard J. ,  Maddage, Frederick J. Jr ,  Montminy, Richard M. ,  Tougas, Kevin

IPC: G01N21/27

CPC classification number: G01J3/50 ,  G01J3/02 ,  G01J3/0229 ,  G01J3/0251 ,  G01J3/0267 ,  G01J3/0278 ,  G01J3/0289 ,  G01J3/0291 ,  G01J3/04 ,  G01J3/501 ,  G01J3/502 ,  G01N21/251

Abstract: Color measurement instrument (10) including an integrating sphere (12), a beam splitter (16), a video camera (18), and a spectrograph (20). The beam splitter (16) is aligned with the viewing port (32) of the spectrophotometer to deliver the light reflected from the sample (S) to both the video camera (18) and the spectrograph (20). The video camera (18) provides an image of the position of the sample (S) with respect to the viewing port (32) of the sphere (12), enabling the visual observation and evaluation of the sample position prior to use of the spectrophotometer.

公开(公告)号：EP1278049A1

公开(公告)日：2003-01-22

申请号：EP01810713.6

申请日：2001-07-18

Applicant: CSEM Centre Suisse d'Electronique et de Microtechnique SA

Inventor： Boer, Gerben Christiaan ,  Dangel, Roger Franz ,  Seitz, Peter ,  Cottier, Kaspar ,  Scharf, Toralf

IPC: G01J3/10 ,  G01J3/46

CPC classification number: G01J3/46 ,  G01J3/02 ,  G01J3/0251 ,  G01J3/0272 ,  G01J3/10 ,  G01J3/447 ,  G01J3/453 ,  G01J3/501

Abstract: The illumination module (2) is for illuminating a plane measurement spot (3) of a reflection spectrometer (1). It comprises a plurality of light-emitting diodes (41.1-41.8). Light (21) is guided from the light-emitting diodes (41.1-41.8) to the measurement spot (3) by a circular conical mirror (6), such that the angle of incidence of the light (21) is essentially 45°. First (5.1-5.8) and second (7) apertures delimit the angular range of light. The reflection spectrometer (1) comprises the illumination module (2) described above, a dispersive optical element (8) for analyzing light emerging from the measurement spot (3), and a detector array (9).

Abstract translation: 照明模块（2）用于照射反射光谱仪（1）的平面测量点（3）。 它包括多个发光二极管（41.1-41.8）。 光（21）通过圆锥形反射镜（6）从发光二极管（41.1-41.8）引导到测量点（3），使得光（21）的入射角基本为45°。 首先（5.1-5.8）和第二（7）个孔限定光的角度范围。 反射光谱仪（1）包括上述照明模块（2），用于分析从测量点（3）出射的光的色散光学元件（8）和检测器阵列（9）。

公开(公告)号：EP1216434A1

公开(公告)日：2002-06-26

申请号：EP00968459.8

申请日：2000-09-28

Applicant: Lowery, Robert

Inventor： Lowery, Robert

IPC: G03B27/32 ,  B44D7/00 ,  G03B27/54 ,  G03C7/00

CPC classification number: G03C7/00 ,  B05D5/005 ,  B05D5/06 ,  B44D2/00 ,  B44D3/003 ,  G01J3/0251 ,  G01J3/0272 ,  G01J3/46 ,  G01J3/463 ,  G03C8/00

Abstract: The present invention relates to a method for matching the color of a paint to the existing color of a vehicle, comprising the steps of exposing a photo-reactive film to the surface of the vehicle in order to activate color pigments in the emulsion, extracting the pigments from the film (for example by placing the emulsion in a solvent), and mixing the pigments with a neutral base solution in order to tint the solution to the color of the vehicle. An asociated device involves a camera with an adpater for mounting a light-tight box thereto, said box having an open side for placement on the surface of the vehicle, and illumination means around its interior periphery.

公开(公告)号：EP0805965A4

公开(公告)日：1998-04-15

申请号：EP96903621

申请日：1996-01-23

Applicant: UGTS INC

Inventor： VALENTE KEVIN A ,  REUTER ERNEST R ,  WAGNER RANDALL M

IPC: G01J3/50 ,  G01N21/87 ,  G01N19/02 ,  A44C17/00 ,  G01J3/28 ,  G01J3/40 ,  G01J3/46 ,  G01N21/00 ,  G01N21/25

CPC classification number: G01J3/50 ,  G01J3/0251 ,  G01J3/504 ,  G01J3/51 ,  G01N21/87

Abstract: The invention relates to evaluation of gemstones and other transparent specimens and in particular to color grading of gemstones. The device utilizes a band pass filter (23) which transmits light through lenses (32) onto the detector array (31) to obtain the spectral response of a complete image. The gemstone is illuminated with annular light ring (22), which receives light from a light source (18) located in the right half compartment (14), in a way that provides for analysis of both reflected and transmitted light. The device utilizes multiple lighting angles to construct a composite image that is used to perform the grading of the gemstones.

公开(公告)号：EP0788596A1

公开(公告)日：1997-08-13

申请号：EP95937628.0

申请日：1995-10-26

Applicant: Byk-Gardner USA

Inventor： KEANE, Thomas, J. ,  COOK, Richard, A. ,  GAMBEL, David, R. ,  GANONG, Frederick, R. ,  KEANE, Thomas, M. ,  LADSON, Jack, A.

IPC: G01J3 ,  G01N21

CPC classification number: G01J3/02 ,  G01J3/0218 ,  G01J3/0251 ,  G01J3/0272 ,  G01J3/0291 ,  G01J3/50 ,  G01J3/51 ,  G01J3/513 ,  G01J3/524 ,  G01N21/474

Abstract: There is provided a portable, high precision color measuring device (22) for measurement of color of non-self-luminous objects. A spectral analyser (58) separates light reflected from an object (32) into spectral components and produces signals corresponding to the levels of spectral components of the reflected light. The device utilizes a dual beam (40, 44) reference system and an illumination homogenizing chamber (92) to negate the effect of instrument component variations and ensure high precision measurements at any instrument orientation. Also, the device optimizes its measurements by adjusting the gain level of each signal produced by the spectral analyzer with a programmable gain amplifier (84, 86). In addition, the device includes various features that compensate for variations in light source intensity and illumination, color temperature, displacement of the device during measurements, alteration of control button position, and adaptability to various optical geometries.

公开(公告)号：EP3311144A1

公开(公告)日：2018-04-25

申请号：EP16731638.9

申请日：2016-06-13

Applicant: De Beers UK Limited

Inventor： FITCH, Alistair

IPC: G01N21/87 ,  G01J3/46

CPC classification number: G01N21/87 ,  G01J3/0251 ,  G01J3/462 ,  G01J3/50 ,  G01N21/25 ,  G01N21/64

Abstract: The present disclosure relates to an apparatus for measuring a colour parameter of a gemstone. The apparatus comprises a support structure for supporting the gemstone at a measurement location, an illumination system for illuminating the gemstone at the measurement location, an imaging device directed towards the measurement location for obtaining an image of the gemstone, and an image processor for analysing the image of the gemstone. The image processor is configured to identify a set of stone pixels corresponding to the gemstone in the image and identify luminance and chrominance values for each stone pixel. A colour vector is calculated from an expression of the chrominance values of the stone pixels in chrominance space, the colour vector extending in chrominance space from stone pixels having a relatively high luminance value to stone pixels having a relatively low luminance value. This colour vector is used in the determination of the colour parameter.