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公开(公告)号：US20250073756A1
公开(公告)日：2025-03-06
申请号：US18818570
申请日：2024-08-28
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Zhen WANG , RJ PISANI , Joseph MCENERY , Barak ERGI , Yong LIU , Hiroshi TAKAHASHI , Sudhin MANDAL
Abstract: The present embodiments relate to a modular system to sort and analyze melee sized gemstones in an automated manner. The system can use a rotating tabletop design to separate gemstones for individual analysis and sorting. For instance, a feeder subsystem can obtain gemstones, and a singulation subsystem can orient the gemstones for further processing. The gemstone can move between subsystems due to the rotation of the table. A set of metric subsystems disposed about the table can process aspects of the gemstone to derive metrics for the gemstone. Further, a sorting subsystem can sort the gemstone into a corresponding bin based on the derived metrics for the gemstone.
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公开(公告)号：US20240310290A1
公开(公告)日：2024-09-19
申请号：US18677738
申请日：2024-05-29
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：US20240102937A1
公开(公告)日：2024-03-28
申请号：US18372026
申请日：2023-09-22
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Tsung-Han TSAI , Hiroshi TAKAHASHI , Mehdi TOOSI , Yong LIU
IPC: G01N21/88 , G01N21/958 , G06T7/00 , H04N23/95
CPC classification number: G01N21/8806 , G01N21/8851 , G01N21/958 , G06T7/0002 , H04N23/95 , G01N2021/8812 , G01N2021/8822 , G01N2021/8867 , G01N2201/0633 , G01N2201/0634 , G01N2201/105 , G01N2201/126 , G01N2201/127
Abstract: Systems and methods here may be used for a setup of image capturing of a gemstone, such as a diamonds that are of high clarity grades. The present embodiments can provide methods to capture a diamond surface and internal clarity features from a diamond table and through and of other facets. Systems and methods may be used to convert gemstone dimension information into azimuth, slope, and distance information and adjust the motorized stage accordingly for surface imaging. Further, a calibration method can consider the offsets between design and actual system alignment. A calibration process can be used to compensate the offsets. Further, an additional conversion can be derived to compensate the offset caused by the geometry of the gemstone. The methods can automatically capture surface reflection images on facets of the gemstone and internal features taken through facets of the gemstone.
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公开(公告)号：US20230243758A1
公开(公告)日：2023-08-03
申请号：US18104224
申请日：2023-01-31
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Tsung-Han TSAI , Hiroshi TAKAHASHI , Mehdi TOOSI , Muhammed BAGDIGEN
CPC classification number: G01N21/87 , G01N21/17 , G01N2021/1765 , G01N2201/025 , G01N2201/12723
Abstract: Systems and methods here may be used for automated alignment and focus adjustment for one or multiple sample gemstones on a stage, including determining gemstone sample tilt based on image data, automatically moving a stage to align the tilted sample, determining a focal plane that overlaps a focal point of a camera with the gemstone, and automatically moving a stage to the focal plane.
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公开(公告)号：US20230083053A1
公开(公告)日：2023-03-16
申请号：US17943136
申请日：2022-09-12
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Zhen WANG , Benjamin VALLIANT , Hiroshi TAKAHASHI , Mehdi TOOSI
IPC: B23K26/03 , B23K26/08 , B23K26/359
Abstract: Systems and methods here may be used for a laser inscriber or engraver of a gemstone using software feedback loops and multiple cameras to auto focus the system and automate the inscription.
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公开(公告)号：US11499920B2
公开(公告)日：2022-11-15
申请号：US17200706
申请日：2021-03-12
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Tsung-Han Tsai , Hiroshi Takahashi
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.
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公开(公告)号：US11346788B2
公开(公告)日：2022-05-31
申请号：US17105065
申请日：2020-11-25
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Tsung-Han Tsai , Wuyi Wang
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：US20220034795A1
公开(公告)日：2022-02-03
申请号：US17382317
申请日：2021-07-21
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Hiroshi TAKAHASHI , Pradeep N. PERERA
Abstract: Systems and methods here may be used for capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, for both reflective and transmission modes.
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公开(公告)号：US20220026351A1
公开(公告)日：2022-01-27
申请号：US17385895
申请日：2021-07-26
Applicant: Gemological Institute of America, Inc. (GIA)
Inventor： Jing ZENG , Hiroshi TAKAHASHI , Jon NEAL
Abstract: Some examples herein include systems and methods of creating standards of gemstones of various classifications, which may display certain characteristics of the various classifications when excited by ultraviolet radiation and fluoresce in response. In some examples, a set of standards are created using fluorescent material, filters, and a radiation source to compare against a sample gemstone. In some examples, specific Light Emitting Diodes are selected to illuminate the gemstone samples under analysis.
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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.
