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公开(公告)号：US10890531B2
公开(公告)日：2021-01-12
申请号：US16666375
申请日：2019-10-28
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：US10788460B2
公开(公告)日：2020-09-29
申请号：US16382178
申请日：2019-04-11
Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)
Inventor： George Wyatt Rhodes
Abstract: Resonant Ultrasound Spectroscopy (RUS) is applied to diamonds (both cut/polished gemstones and rough diamonds) to yield a digital fingerprint from which the stone may be authenticated and sorted according to the structural quality. Diamonds are mined as rough stones from which they undergo examination to determine their value as being gem, or of two different industrial qualities. Fewer than 25% of mined diamonds are worthy of cutting and polishing to yield gems for jewelry. About 40% of the remaining population still have value as industrial diamonds for machine tools, and the rest is ground into dust to provide coatings for grinding applications. Rough stones exist in two conditions being coated and uncoated. The coated stones have a layer of polycrystalline diamond, different from the predominant crystal structure, rendering them opaque. This interferes with optical inspection, as any cracks, or inclusions can't be seen. RUS provides a reliable sorting and fingerprinting system for both cut/polished stones as well as rough diamonds of sufficient structural quality to yield a spectral signature. As high value items, diamonds are shipped around the world, and but sometimes thefts occur. RUS yields a digital fingerprint allowing the identity of an individual stone to be verified upon recovery.
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公开(公告)号：US10775313B2
公开(公告)日：2020-09-15
申请号：US15949922
申请日：2018-04-10
Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)
Inventor： Shane Elen , Matt Hall , Wuyi Wang
Abstract: A cooling apparatus includes a container configured to contain a coolant within a space. The apparatus further includes a cooling block positioned substantially within the space and having a high heat capacity such that the space not occupied by the cooling block is filled with a coolant to a level at or below the top of the cooling block, and a placement structure having high thermal conductivity positioned on top of the cooling block and outside of the space. A method for cooling an object is also provided, which includes inserting a coolant into a container configured to contain the coolant within a space, and placing the object on a placement structure outside the space. For this method, the placement structure has a high thermal conductivity and is coupled to a cooling block, the cooling block having a high heat capacity and positioned substantially within the space.
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公开(公告)号：US20190324956A1
公开(公告)日：2019-10-24
申请号：US16396603
申请日：2019-04-26
Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)
Inventor： Marc VERBOVEN , Troy BLODGETT
Abstract: A method and system for generating a clarity grading look-up table includes collecting actual inclusion parameter data for a plurality of gems, where the actual inclusion parameter data includes an actual clarity grade and an actual inclusion parameter data combination. A mathematical relationship between a clarity grade and a particular inclusion parameter combination is then extrapolated from the actual inclusion parameter data. A derived clarity grade is then assigned to a plurality of inclusion parameter combinations as a function of the mathematical relationship and a set of inputted inclusion parameters. Also, a method and system for providing a clarity grade includes receiving a plurality of inclusion characteristics associated with a gem and parameterizing each of the inclusion characteristics, so that a parameter value is assigned to each inclusion characteristic. The parameter values are then input to a mathematical formula so as to provide a parameterized clarity grade for the gem.
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公开(公告)号：US20160290925A1
公开(公告)日：2016-10-06
申请号：US14673780
申请日：2015-03-30
Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC.
Inventor： Hiroshi TAKAHASHI
CPC classification number: G01N21/6456 , G01N21/87 , G01N33/381 , G01N2021/6471 , G01N2201/062 , G01N2201/0634 , G01N2201/068 , G01N2201/12
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.
Abstract translation: 本文提供了一种用于评估宝石的荧光特性的装置。 该装置包括用于支撑要评估的宝石的光学不透明平台，用于提供均匀的UV和非UV照明的一个或多个光源，图像捕获部件和远心透镜，定位成将照亮宝石的荧光图像提供给 图像捕获组件。 还提供了基于使用这种装置收集的图像的荧光分析方法。
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Patent Agency Ranking
公开(公告)号：US20140101204A1
公开(公告)日：2014-04-10
申请号：US13845995
申请日：2013-03-18
Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)
Inventor： Marc VERBOVEN , Troy BLODGETT
IPC: G01N21/87
CPC classification number: G06F17/30339 , G01N21/87
Abstract: A method and system for generating a clarity grading look-up table includes collecting actual inclusion parameter data for a plurality of gems, where the actual inclusion parameter data includes an actual clarity grade and an actual inclusion parameter data combination. A mathematical relationship between a clarity grade and a particular inclusion parameter combination is then extrapolated from the actual inclusion parameter data. A derived clarity grade is then assigned to a plurality of inclusion parameter combinations as a function of the mathematical relationship and a set of inputted inclusion parameters. Also, a method and system for providing a clarity grade includes receiving a plurality of inclusion characteristics associated with a gem and parameterizing each of the inclusion characteristics, so that a parameter value is assigned to each inclusion characteristic. The parameter values are then input to a mathematical formula so as to provide a parameterized clarity grade for the gem.
Abstract translation: 用于生成清晰度分级查找表的方法和系统包括收集多个宝石的实际包含参数数据，其中实际包含参数数据包括实际清晰度等级和实际包含参数数据组合。 然后，从实际包含参数数据中推导出清晰度等级和特定包含参数组合之间的数学关系。 随后，根据数学关系和一组输入的包含参数，将派生的清晰度等级分配给多个包含参数组合。 此外，提供清晰度等级的方法和系统包括接收与宝石相关联的多个包含特征并参数化每个包含特征，从而将参数值分配给每个包含特征。 然后将参数值输入到数学公式，以便为gem提供参数化的清晰度等级。
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公开(公告)号：US20130038859A1
公开(公告)日：2013-02-14
申请号：US13651242
申请日：2012-10-12
Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC.
Inventor： Marc VERBOVEN , Troy BLODGETT
IPC: G01N21/87
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：US12196678B2
公开(公告)日：2025-01-14
申请号：US18532247
申请日：2023-12-07
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Tsung-Han Tsai
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：US20240394961A1
公开(公告)日：2024-11-28
申请号：US18671315
申请日：2024-05-22
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： James CONANT , Jason QUICK , Ilene Miller REINITZ , Brock Aaron WILKE , Alexander Abraham BALTER , Troy BLODGETT , Abhijith PRABHU , Al GILBERTSON , Jacob RESSLER-CRAIG
Abstract: The present embodiments relate to methods and systems for analyzing and representing diamond appearance, and to an interactive, web-based encyclopedia of diamond cuts. The analytical methods involve the use of several unique techniques designed to capture and represent the nuances of different diamond cuts precisely. The graphical representations translate this complex gemological data into a format that is accessible and understandable to non-expert users. The diamond cut encyclopedia, generated by a unique enumeration algorithm, provides a comprehensive and detailed resource for both experts and enthusiasts alike. The present embodiments present a significant advancement in the field of gemology, offering increased precision in diamond analysis, user-friendly interfaces, and an efficient method for creating a comprehensive, interactive diamond cut encyclopedia.
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公开(公告)号：US20240391055A1
公开(公告)日：2024-11-28
申请号：US18671655
申请日：2024-05-22
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： James CONANT , Jason QUICK , Ilene Miller REINITZ , Brock Aaron WILKE , Alexander Abraham BALTER , Troy BLODGETT , Abhijith PRABHU , Al GILBERTSON , Jacob RESSLER-CRAIG
Abstract: The present embodiments relate to systems and methods for generating all possible gemstone faceting arrangements. An apparatus can include a computer, a computerized file storage system for saving results, and a mechanism that generates faceting arrangements satisfying user-defined constraints. The apparatus can feature a program that enables loading gemstone faceting designs and can offer adjustable settings to control the specific geometric parameters. The program can also provide users with 3D models satisfying geometric constraints. Additionally, the apparatus may incorporate a ray-tracing engine to assess the light performance qualities of the virtual gemstone model. The present embodiments can also include methods for optimizing diamond cut using a genetic algorithm.
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