公开(公告)号：WO2021108567A1

公开(公告)日：2021-06-03

申请号：PCT/US2020/062249

申请日：2020-11-25

Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)

Inventor： TSAI, Tsung-Han ,  WANG, Wuyi

IPC: G01N21/87 ,  G01N21/00 ,  G01N21/25 ,  G01N21/64 ,  G01N21/88

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.

公开(公告)号：WO2019240763A1

公开(公告)日：2019-12-19

申请号：PCT/US2018/036966

申请日：2018-06-11

Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)

Inventor： LOUNDIN, Lorne ,  TOOSI, Mehdi ,  WANG, Wuyi

IPC: G01N21/87 ,  G01N1/28 ,  G01N33/38

Abstract: Systems and methods here may be configured for cooling and examining materials. In some example embodiments, the system may include a main thermoconductive body with indentations on the top surface, a bottom surface having legs structures along the edge, wherein the bottom surface and the plurality of leg structures form a partially enclosed bottom chamber, and a center channel connecting the top surface and the bottom chamber.

公开(公告)号：WO2023039224A1

公开(公告)日：2023-03-16

申请号：PCT/US2022/043157

申请日：2022-09-09

Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)

Inventor： WANG, Zhen ,  VALLIANT, Benjamin ,  TAKAHASHI, Hiroshi ,  TOOSI, Mehdi

IPC: B23K26/08 ,  B23K26/03 ,  B23K26/035 ,  B23K26/04

Abstract: Methods and systems described here include laser inscribing a gemstone, a computer in communication with a first light source and a second light source, and a laser generator to create an inscription on the gemstone, wherein the first light source is configured to be directed at the gemstone in the holder from a side view, wherein the second light source is configured to be directed at the gemstone in the holder from a girdle top-view, wherein the computer is configured to utilize the captured side image to map a side view girdle profile of the gemstone and calculate a relative motor movement to align each spot along the inscription with a laser focal plane.

公开(公告)号：WO2021194774A1

公开(公告)日：2021-09-30

申请号：PCT/US2021/022218

申请日：2021-03-12

Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)

Inventor： TSAI, Tsung-Han ,  TAKAHASHI, Hiroshi

IPC: G01N21/87 ,  G01N21/65 ,  G01N21/00 ,  G01N21/31 ,  G01N21/25 ,  G01J2003/2836 ,  G01J3/2823 ,  G01N2021/656

Abstract: Systems and methods here may be used for automated capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, applying a Raman Probe to a first sample gemstone under evaluation on the stage, receiving spectrometer data of the sample gemstone from the probe, automatically moving the stage to a second sample, using the image data, and analyzing the other samples.

公开(公告)号：WO2018111499A9

公开(公告)日：2018-06-21

申请号：PCT/US2017/062409

申请日：2017-11-17

Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)

Inventor： WANG, Wuyi ,  TSAI, Tsung-han

IPC: G01N21/64 ,  A44C17/00 ,  A44C19/00 ,  G01N21/87 ,  G01N33/38 ,  G09B5/02

Abstract: Disclosed herein are devices and methods for screening gemstones (e.g., diamonds). In articular, the disclosed method and system can efficiently and accurately identify and distinguish genuine earth-mined gemstones (e.g., diamond) from synthetic and treated gemstones or gemstone simulants.

公开(公告)号：WO2005024471A2

公开(公告)日：2005-03-17

申请号：PCT/US2004/029242

申请日：2004-09-08

Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC.

Inventor： POMERANTZ, Howard ,  GINGERELLA, Sherman ,  FRITTS, Derwin

IPC: G02B

CPC classification number: G02B21/0008 ,  G01N21/87

Abstract: A gem microscope according to the invention includes a focus column, a stage, and a quick disconnect mechanism that facilitates removable coupling of the focus column of the stage. The focus column and the stage have compatible features that establish the proper mounting plane and lateral alignment of the focus column relative to the stage. In the example embodiment, the quick disconnect mechanism includes a threaded element on the focus column and a compatibly threaded thumbwheel that rotates within the stage to connect/disconnect the focus column to/from the stage.

Abstract translation: 根据本发明的宝石显微镜包括焦点柱，台和快速断开机构，其有助于舞台的焦点柱的可移除的联接。 焦点列和舞台具有兼容特征，可以建立相对于舞台的对焦柱的正确安装平面和横向对齐。 在示例性实施例中，快速断开机构包括焦点列上的螺纹元件和在该平台内旋转的兼容螺纹的指轮，用于将焦点柱连接/脱离该台。

公开(公告)号：WO2022133161A1

公开(公告)日：2022-06-23

申请号：PCT/US2021/063939

申请日：2021-12-17

Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)

Inventor： LUO, Yun ,  NELSON, David ,  ARDON, Troy ,  BREEDING, Christopher M.

IPC: G06K9/00

Abstract: Systems and methods here may be used for a 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.

公开(公告)号：WO2021108567A8

公开(公告)日：2021-06-03

申请号：PCT/US2020/062249

申请日：2020-11-25

Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)

Inventor： TSAI, Tsung-Han ,  WANG, Wuyi

IPC: G01N21/87 ,  G01N21/00 ,  G01N21/25 ,  G01N21/64 ,  G01N21/88 ,  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.

公开(公告)号：WO2016161014A1

公开(公告)日：2016-10-06

申请号：PCT/US2016/025060

申请日：2016-03-30

Applicant: GEMOLOGICAL INSTITUTE OF AMERICA INC. (GIA)

Inventor： TAKAHASHI, Hiroshi

IPC: G01N21/87 ,  G01N33/38

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待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。

公开(公告)号：WO2006036937A2

公开(公告)日：2006-04-06

申请号：PCT/US2005/034530

申请日：2005-09-26

Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC.

Inventor： BLODGETT, Troy ,  GEURTS, Ronald, Hendrik ,  GILBERTSON, Ai ,  GREEN, Barak ,  HEMPHILL, T. Scott ,  MOSES, Tom

IPC: G06F17/18

CPC classification number: A44C17/001 ,  Y10T117/1004

Abstract: A system for grading the cut of a diamond utilizes a number of appearance metrics to generate scores for a number of cut components that affect cut quality. These cut components include brightness, fire, scintillation, overweight, durability, polish, and symmetry. The cut grading system employs a cut grading algorithm that processes the individual scores obtained for the cut components to generate an overall cut grade for the diamond. The scoring methodology and the cut grading algorithm are designed to emulate actual observation grading such that the overall cut grade represents a fair indication of the cut quality of the diamond. In one practical embodiment, the cut grading system is fully automated and computer-implemented.

Abstract translation: 用于对钻石切割进行分级的系统利用多个外观度量来产生影响切割质量的多个切割部件的得分。 这些切割组件包括亮度，火焰，闪烁，超重，耐久性，抛光和对称性。 切割分级系统采用切割分级算法，其处理为切割部件获得的各个分数以产生钻石的总切割等级。 评分方法和切割分级算法被设计为模拟实际观察分级，使得整体切割等级代表钻石切割质量的公正指示。 在一个实际的实施例中，切割分级系统是完全自动化的并且是计算机实现的。