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    • 37. 发明公开
    • LIGHTING DEVICE FOR INSPECTION AND LIGHTING METHOD FOR INSPECTION
    • BELEUCHTUNGSVORRICHTUNG ZUR INSPEKTION UND BELEUCHTUNGSVERFAHREN ZUR INSPEKTION
    • EP2790012A1
    • 2014-10-15
    • EP12855609.9
    • 2012-11-27
    • CCS Inc.
    • MASUMURA, Shigeki
    • G01N21/84G01B11/30
    • G01B11/30G01N21/8806G01N2021/8809G01N2021/8835G01N2201/068
    • In order to provide a lighting device for inspection and lighting method for inspection that, with use of inspection light, make it possible for a difference between a defect and a normal part, such as contrast, to appear, the lighting device for inspection is provided with: a surface light source 1 that emits the inspection light; a lens 2 that is provided on a light axis LX of the inspection light emitted from the surface light source 1, and between an inspection object W and the surface light source 1; and a first diaphragm 31 that is provided between the surface light source 1 and the lens 2, or between the lens 2 and the inspection object W, wherein: positions of the surface light source 1 and the lens 2 with respect to the inspection object W are set such that an image plane IM on which the surface light source 1 is imaged is present near the inspection object W; and a position of the first diaphragm 31 with respect to the lens 2 is set such that the central axis of an irradiation solid angle determined by a part of the inspection light, which is incident on an outer edge part of the image plane IM, is parallel to the light axis LX, or is displaced from the light axis and tilted by a predetermined amount.
    • 为了提供一种用于检查的照明装置,通过使用检查光,可以使缺陷和诸如对比度的正常部分之间的差异出现,提供用于检查的照明装置 具有:发射检查光的面光源1; 设置在从面光源1发射的检查光的光轴LX上和检查对象W与面光源1之间的透镜2; 以及设置在表面光源1和透镜2之间或者在透镜2和检查对象W之间的第一光阑31,其中:面光源1和透镜2相对于检查对象W的位置 被设置为使得在其上形成有面光源1的图像面IM存在于检查对象W附近; 并且第一光阑31相对于透镜2的位置被设定为使得入射在图像面IM的外缘部分上的被检查光的一部分确定的照射立体角的中心轴为 平行于光轴LX,或者从光轴移位并倾斜预定量。
    • 38. 发明公开
    • Apparatus for generating data for determining a property of a gemstone
    • 用于确定宝石的一个属性生成数据的装置
    • EP1795888A1
    • 2007-06-13
    • EP05257579.2
    • 2005-12-09
    • Overseas Diamonds Technologies N.V.
    • Van de Velde, Marc Frans AlidaKeersmaekers, Christiaan Louis Cecile
    • G01N21/87G01N33/38
    • G01N33/381G01N21/87G01N2021/8809
    • An apparatus for generating image data for use in determining a visual property of a gemstone perceptible to the human eye, such as a cut diamond, the apparatus comprising: a support structure for supporting a gemstone placed at an observation position, the support structure being capable of supporting a gemstone having an axis of symmetry such that the axis of symmetry is parallel to an axis X passing through the observation position; illumination means arranged to illuminate a gemstone so placed with a spatially varied light pattern; rotation means arranged to cause relative rotation between the light pattern and the support structure generally about the axis X; and a camera arranged to capture electronic images of light returned by the gemstone and to output said images as image data; control means arranged to control the rotation means and camera such that the camera captures an electronic image of the gemstone during said relative rotation at each of a plurality of different rotational positions of the support structure relative to the light pattern, the images being captured generally along the axis X, the illumination means comprising a reflector having a concave surface arranged to reflect light generally towards the gemstone, wherein the concave surface has at least one relatively reflective region and at least one relatively unreflective region, thereby creating said light pattern, the apparatus characterised in that: the length of a boundary between the relatively reflective and unreflective regions is greater than the minimum length.
    • 用于生成图像数据以用于确定性采矿宝石的视觉特性可感知到人眼,颜色的装置:诸如一个切割的钻石,该装置包括:支撑结构,用于支撑在观察位置放置一个宝石,支撑结构能够 的支撑具有对称轴线检查做了宝石对称轴是平行于X穿过观察位置的轴; 照明装置,被设置以照射与在空间上变化的光图案,以便放置在宝石; 旋转装置,用来使所述光图案和绕X轴的支撑结构基因反弹之间的相对旋转; 和布置为捕获由宝石并且输出返回光的电子图像的照相机所述图像作为图像数据; 控制装置布置成控制所述旋转装置和相机沿着检查做上述相对转动期间,在每种情况下相对于光图案的支撑结构的不同的旋转位置的多个在宝石的电子图像的照相机捕捉,图像被捕获基因的反弹 轴线X,该照明装置包括一个反射器具有布置为将光反射基因反弹向宝石的凹表面,worin凹面具有至少一个相对反射区域和至少一个相对鲁莽的区域,从而产生所述光图案,该装置 DASS:相对反射和鲁莽的区域之间的边界的长度大于最小长度。