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    Colorimetry device
    143.
    发明授权
    Colorimetry device 有权

    公开(公告)号：US12050132B2

    公开(公告)日：2024-07-30

    申请号：US17753463

    申请日：2020-08-28

    Applicant: Konica Minolta, Inc.

    Inventor： Yasuhisa Kinto

    IPC: G01J3/02 ,  G01J3/50

    CPC classification number: G01J3/50 ,  G01J3/0248 ,  G01J3/0251

    Abstract: A colorimetry device includes an integrating sphere having a measurement opening part and a trap hole, a trap disposed to be able to open and close the trap hole, a lid that is non-reflective and disposed to be able to open and close the trap hole, an imaging means disposed at a position that allows taking, through the trap hole, an image of a specimen facing the measurement opening part, and a display means that displays an image taken by the imaging means. The trap is to move to a position at which the trap hole is closed by the trap at a time of measurement of light with an SCI method, the light being reflected from the specimen, and the lid is moved to a position at which the trap hole is closed by the lid at a time of measurement of the light with an SCE method.

    Colorimetry Device
    145.
    发明申请
    Colorimetry Device 审中-公开

    公开(公告)号：US20180356285A1

    公开(公告)日：2018-12-13

    申请号：US15781965

    申请日：2016-12-05

    Applicant: KONICA MINOLTA, INC.

    Inventor： Masayuki YAMADA

    IPC: G01J3/02 ,  G01J3/51

    CPC classification number: G01J3/0251 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0235 ,  G01J3/0262 ,  G01J3/0264 ,  G01J3/0291 ,  G01J3/51

    Abstract: A colorimeter includes an integrating sphere, a light source, a light receiver and a low reflectance unit. The integrating sphere has a first aperture to be covered with a sample and a second aperture opposing the first aperture configured to allow reflected light from the sample to pass therethrough. The light source irradiates an inner wall of the integrating sphere with light. The light receiver receives, through the second aperture, the reflected light from a surface of the sample that enters the integrating sphere through the first aperture when the light from the light source is reflected by the inner wall, and is applied to the sample through the first aperture, and outputs a signal in accordance with the reflected light. The low reflectance unit is disposed around the light receiver to face an internal space of the integrating sphere, and has lower light reflectance than the inner wall.

    COLOUR MEASUREMENT OF GEMSTONES
    146.
    发明申请
    COLOUR MEASUREMENT OF GEMSTONES 审中-公开

    公开(公告)号：US20180156735A1

    公开(公告)日：2018-06-07

    申请号：US15737196

    申请日：2016-06-13

    Applicant: De Beers UK Ltd

    Inventor： Alistair FITCH

    IPC: G01N21/87 ,  G01N21/25 ,  G01N21/64

    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.

    Method and apparatus for color measurement of non-solid colors
    147.
    发明授权
    Method and apparatus for color measurement of non-solid colors 有权

    公开(公告)号：US09784614B2

    公开(公告)日：2017-10-10

    申请号：US14820077

    申请日：2015-08-06

    Applicant: Datacolor Holding AG

    Inventor： Hong Wei

    IPC: G01N21/25 ,  G01J3/02 ,  G01J3/51

    CPC classification number: G01J3/0251 ,  G01J3/027 ,  G01J3/51

    Abstract: In one embodiment, an apparatus for measuring a color of a non-solid colored sample includes an integrating sphere having a sensor port, a sample port, and a plurality of registration marks affixed to an interior surface of the integrating sphere, outside a periphery of the sample port, a camera positioned near the sensor port, and a plurality of filters positioned between the integrating sphere and camera. An optical axis of the camera extends from the camera, through at least one of the plurality of filters, through the sensor port, to the sample port.

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