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公开(公告)号：US20160290930A1
公开(公告)日：2016-10-06
申请号：US14673776
申请日：2015-03-30
Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC.
Inventor： Hiroshi TAKAHASHI
CPC classification number: G01N21/87 , G01N21/255 , G01N21/88 , G01N33/381 , G01N2201/061 , G01N2201/0631 , G01N2201/0634 , G01N2201/0638 , G01N2201/065
Abstract: Provided herein is an apparatus for assessing a color characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a sample gemstone to be assessed, a daylight-approximating light source to provide uniform illumination to the gemstone, an image capturing component, and a telecentric lens positioned to provide an image of the illuminated gemstone to the image capturing component. Also provided are methods of color analysis based on images collected using such an apparatus.
Abstract translation: 本文提供了一种用于评估宝石的颜色特性的装置。 该装置包括用于支撑要评估的样品宝石的光学不透明平台，用于向宝石提供均匀照明的日光近似光源，图像拍摄部件和远心透镜，定位成将照明宝石的图像提供给 图像捕获组件。 还提供了基于使用这种装置收集的图像进行颜色分析的方法。
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公开(公告)号：US08760758B2
公开(公告)日：2014-06-24
申请号：US13651253
申请日：2012-10-12
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Marc Verboven , Troy Blodgett
IPC: G01N21/01
Abstract: A reflected dark field structure includes a bottom plate, a support tube, a light unit, a diffuser structure, and a reflector unit that provides reflected dark field illumination, such that a gem held by the support tube and surrounded by the diffuser structure is illuminated and viewable through an aperture in the reflector unit. A method for imaging and analyzing a gem includes placing the gem onto a support tube where it is illuminated with dark field and reflected dark field illumination, and viewing the gem via an aperture located on a top reflector unit, which provides a top cover for the gem. Furthermore, a method and apparatus for obtaining images of a gem includes a dark field stage, a reflector unit, and an image-acquiring device, such that a gem placed in the dark field stage is illuminated, and such that the reflector unit covers the dark field stage and provides reflected dark field illumination, and such that the image-acquiring device is directed towards an aperture in the reflector unit.
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公开(公告)号：US12228521B2
公开(公告)日：2025-02-18
申请号：US18096553
申请日：2023-01-12
Applicant: Gemological Institute of America, Inc.
Inventor： Tsung-Han Tsai , Hiroshi Takahashi , Joey McEnery
Abstract: Systems and methods here may be used for capturing and analyzing reflectance images of facets on a gemstone under particular lighting and camera setups to automatically generate a clarity grade and/or surface polish grade for the gemstone.
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公开(公告)号：US20240241063A1
公开(公告)日：2024-07-18
申请号：US18622856
申请日：2024-03-29
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Yun LUO , David NELSON , Troy ARDON , Christopher M. BREEDING
IPC: G01N21/88 , G06T7/13 , G06V10/141 , G06V10/60 , G06V20/69
CPC classification number: G01N21/8851 , G01N21/8806 , G06T7/13 , G06V10/141 , G06V10/60 , G06V20/693 , G01N2021/8835 , G01N2021/8854 , G01N2021/8887 , G06T2207/20224
Abstract: Systems and methods here may be used for analyzing images of gemstones to automatically assign a haziness and/or fluorescence grade to the gemstone using contrast analysis on pixelated, digital images of the gemstones.
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公开(公告)号：US11988610B2
公开(公告)日：2024-05-21
申请号：US17555241
申请日：2021-12-17
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Yun Luo , David Nelson , Troy Ardon , Christopher M. Breeding
IPC: G01N21/88 , G06T7/13 , G06V10/141 , G06V10/60 , G06V20/69
CPC classification number: G01N21/8851 , G01N21/8806 , G06T7/13 , G06V10/141 , G06V10/60 , G06V20/693 , G01N2021/8835 , G01N2021/8854 , G01N2021/8887 , G06T2207/20224
Abstract: Systems and methods here may be used for analyzing images of gemstones to automatically assign a haziness and/or fluorescence grade to the gemstone using contrast analysis on pixelated, digital images of the gemstones.
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Patent Agency Ranking
公开(公告)号：US20240110873A1
公开(公告)日：2024-04-04
申请号：US18532247
申请日：2023-12-07
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Tsung-Han TSAI
CPC classification number: G01N21/6456 , G01N33/381 , G02B27/1013 , G02B27/141 , G02B27/145 , G06T7/90 , G01N2201/061 , G01N2201/062 , G06T2207/10024 , G06T2207/10064
Abstract: Systems and methods here may be used for a setup of image capturing of a gemstone, such as a diamond, exposed to different light sources. Some examples utilize a setup that both sends light and captures the image through multiple dichroic beam splitters at pre-selected timing. The multiple light source and multiple dichroic beam splitter arrangement allows for multiple gemstones to be analyzed using multiple methods with minimal moving, changing, or adjusting the equipment for different samples.
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公开(公告)号：US20230243757A9
公开(公告)日：2023-08-03
申请号：US16393032
申请日：2019-04-24
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： VENKAT K. BALAGURUSAMY , Brian Pear , Edward J Maggiacomo , Thomas Picunko , Joseph Ligman , Donna N. Eng Dillenberger
CPC classification number: G01N21/87 , G06T7/0004 , G01N2201/0221 , H04N5/2256 , H04N5/2254
Abstract: In an embodiment, a gem imaging system includes a stage having a platform configured to hold an object. In an embodiment, the system further includes a light source configured to illuminate the object. In an embodiment, the system further includes a housing configured to at least partially enclose the object, wherein the housing is configured to position a mobile device such that a camera lens of the mobile device is aligned with the object.
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公开(公告)号：US11674905B2
公开(公告)日：2023-06-13
申请号：US17731752
申请日：2022-04-28
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Tsung-Han Tsai , Wuyi Wang
CPC classification number: G01N21/87 , G01N21/6456
Abstract: Systems and methods here may be used for a setup of fluorescence image capturing of a gemstone, such as a diamond placed on a flat stage. Some examples utilize a setup that both sends light and captures the image from the table side of the gemstone by passing ultraviolet (UV) light between 10 nm and 400 nm to the gemstone and capturing the excited fluorescence image for analysis through a dichroic beam splitter. In some examples, the cutoff is 300 nm. The dichroic beam splitter arrangement allows for the camera to focus on the same interface of the stage and gemstone over and over for ease of use and without moving, changing, or adjusting the equipment for different samples.
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公开(公告)号：US11630065B2
公开(公告)日：2023-04-18
申请号：US17683874
申请日：2022-03-01
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Hiroshi Takahashi
Abstract: Provided herein is an apparatus for assessing a fluorescence characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a gemstone to be assessed, one or more light source to provide uniform UV and non-UV illumination, an image capturing component, and a telecentric lens positioned to provide fluorescent images of the illuminated gemstone to the image capturing component. Also provided are methods of fluorescence analysis based on images collected using such an apparatus.
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公开(公告)号：US20220163457A1
公开(公告)日：2022-05-26
申请号：US17670411
申请日：2022-02-11
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Hiroshi TAKAHASHI
Abstract: Provided herein is an apparatus for assessing a color characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a sample gemstone to be assessed, a daylight-approximating light source to provide uniform illumination to the gemstone, an image capturing component, and a telecentric lens positioned to provide an image of the illuminated gemstone to the image capturing component. Also provided are methods of color analysis based on images collected using such an apparatus.
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