Patents by Inventor Hyo Sang Jeong

Hyo Sang Jeong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12156784
    Abstract: The present inventive concept relates to a method for obtaining a subgingival marginal shape for a prosthesis design non-invasively by means of an optical coherence tomography (OCT) scanner for obtaining a subgingival marginal shape and an intraoral scanner for obtaining a tooth surface shape, the method including the steps of: obtaining a surface shape of a prepared tooth by means of the intraoral scanner; obtaining the subgingival marginal shape (crown margin line) of the prepared tooth by means of the OCT scanner; and merging the surface shape of the prepared tooth with the subgingival marginal shape to obtain a final three-dimensional shape of the prepared tooth.
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: December 3, 2024
    Assignees: HUVITZ CO., LTD., OSSVIS CO., LTD.
    Inventors: Hyo Sang Jeong, Su Min Han, Weon Joon Lee
  • Publication number: 20240325126
    Abstract: A method of obtaining crown region shape includes obtaining a three-dimensional surface shape image of an oral structure including a tooth on which tooth deletion has been performed; setting a surface edge of a tooth deletion region as a location of a region of interest; scanning a surface shape and an internal cross-section of the oral structure at a predetermined location of the oral structure, and obtaining a partial surface shape image and a partial internal cross-sectional image of the oral structure; detecting a location of a crown margin corresponding to an edge of a region where a tooth was actually deleted from the partial internal cross-sectional image; merging the location of the crown margin with a surface image of a tooth, and causing a margin of the tooth deletion region obtained from a surface shape image of the tooth to extend to the location of the crown margin.
    Type: Application
    Filed: March 28, 2024
    Publication date: October 3, 2024
    Inventors: Hyo Sang JEONG, Min Soo CHO, Weon Joon LEE
  • Patent number: 12062212
    Abstract: The present inventive concept relates to an optical coherence tomography (OCT)-based intraoral scanner calibration device including: a light source; an optical coupler for splitting the path of light irradiated from the light source in first light and second light; a reference part for generating reference light from the first light split by the optical coupler; a sample part for generating measurement light from the second light split by the optical coupler; and a signal generator for generating an OCT image from the reference light and the measurement light.
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: August 13, 2024
    Assignees: Huvitz Co., Ltd., Ossvis Co., Ltd.
    Inventors: Hyo Sang Jeong, Min Soo Cho, Weon Joon Lee
  • Patent number: 12011336
    Abstract: A tomography convergence-type oral scanner includes an oral scanning unit comprising a projector including a first light source for generating visible light, and a camera for generating image data by receiving the visible light reflected from a tooth; an optical tomography scanning unit comprising an OCT body including a second light source that has a different wavelength from the first light source and generates a measurement light incident on the tooth, a beam splitter for splitting the measurement light into a reference light and a measurement light, a reference mirror that reflects the reference light, and a photodetector for detecting an interference light, and an OCT scan probe including a collimator for converting the measurement light into a parallel light and a MEMS mirror for reflecting the converted parallel light; and a dichroic mirror for transmitting the visible light and reflecting the parallel light, thereby irradiating a tooth to be measured.
    Type: Grant
    Filed: November 23, 2021
    Date of Patent: June 18, 2024
    Assignees: HUVITS CO., LTD., OSSVIS CO., LTD.
    Inventors: Hyo Sang Jeong, Su Min Han, Weon Joon Lee
  • Publication number: 20230263395
    Abstract: An intraoral scanner having a tomographic imaging function includes an OCT body configured to obtain an internal cross-sectional image of an oral structure and detecting reflected light; an OCT scan probe configured to irradiate the layer measurement light emitted from the OCT body onto the oral structure and transfer the reflected light to the OCT body; and a control/processing unit configured to control the OCT body, take tomographic images of the oral structure at two or more positions, obtain two or more two-dimensional cross-sectional images of the oral structure, extract an abrasion or filling area for the respective two-dimensional cross-sectional images, calculate cross-sectional position information of the abrasion or filling area, then arrange the position information of the abrasion or filling area, and obtain three-dimensional shape information of the abrasion or filling area.
    Type: Application
    Filed: February 21, 2023
    Publication date: August 24, 2023
    Inventors: Hyo Sang JEONG, Su Min HAN, Jee Hyun KIM, Kyu Bok LEE, Ho Seong CHO, Weon Joon LEE
  • Publication number: 20230263396
    Abstract: An intraoral scanner having a tomographic imaging function includes an OCT body configured to obtain an internal cross-sectional image of an oral structure; an OCT scan probe configured to irradiate the layer measurement light emitted from the OCT body onto the oral structure and transfer the reflected light to the OCT body; and a control/processing unit configured to control the OCT body, take a tomographic image of the oral structure, obtain two or more two-dimensional cross-sectional images, extract an internal crack area for the respective two-dimensional cross-sectional images, calculate cross-sectional position information of the internal crack, then arrange the position information of the internal crack obtained from the respective two-dimensional cross-sectional images in positions where the respective two-dimensional cross-sectional images have been obtained, and obtain three-dimensional shape information of the internal crack.
    Type: Application
    Filed: February 21, 2023
    Publication date: August 24, 2023
    Inventors: Hyo Sang JEONG, Su Min HAN, Jee Hyun KIM, Kyu Bok LEE, Keun Ba Da SON, Weon Joon LEE
  • Publication number: 20230194238
    Abstract: A calibration method of optical coherence tomography device using a non-transmissive planar target includes obtaining three-dimensional image of a surface and an inside of a calibration target (T) by scanning the calibration target (T) using the optical coherence tomography device, and extracting a surface shape image of the calibration target (T) from the obtained the three-dimensional image; and calibrating the surface shape image of the calibration target (T) obtained by the optical coherence tomography device, according to an actual surface shape of the calibration target (T).
    Type: Application
    Filed: December 12, 2022
    Publication date: June 22, 2023
    Inventors: Hyo Sang JEONG, Min Soo CHO, Weon Joon LEE
  • Publication number: 20230172454
    Abstract: An intraoral scanner having a tomography function capable of setting a tomography area using shape information of an oral cavity includes a shape measurement light projector that irradiates shape measurement light for obtaining a shape image of an oral structure; a shape measurement camera that obtains a surface shape image of the oral structure by detecting reflected light; an optical coherence tomography (OCT) body that transmits tomography measurement light to the oral structure and detect reflected light to obtain an internal cross-sectional image of the oral structure; an OCT scan probe that irradiates the tomography measurement light emitted from the OCT body onto a desired position of the oral structure and transfer the reflected light to the OCT body; and a beam splitter that superimposes optical paths of the shape measurement light irradiated from the shape measurement light projector and the tomography measurement light irradiated from the OCT scan probe.
    Type: Application
    Filed: November 29, 2022
    Publication date: June 8, 2023
    Inventors: Hyo Sang JEONG, Min Soo CHO, Su Min HAN, Weon Joon LEE
  • Publication number: 20220270292
    Abstract: The present inventive concept relates to an optical coherence tomography (OCT)-based intraoral scanner calibration device including: a light source; an optical coupler for splitting the path of light irradiated from the light source in first light and second light; a reference part for generating reference light from the first light split by the optical coupler; a sample part for generating measurement light from the second light split by the optical coupler; and a signal generator for generating an OCT image from the reference light and the measurement light.
    Type: Application
    Filed: February 18, 2022
    Publication date: August 25, 2022
    Inventors: Hyo Sang JEONG, Min Soo CHO
  • Publication number: 20220265400
    Abstract: The present inventive concept relates to a method for obtaining a subgingival marginal shape for a prosthesis design non-invasively by means of an optical coherence tomography (OCT) scanner for obtaining a subgingival marginal shape and an intraoral scanner for obtaining a tooth surface shape, the method including the steps of: obtaining a surface shape of a prepared tooth by means of the intraoral scanner; obtaining the subgingival marginal shape (crown margin line) of the prepared tooth by means of the OCT scanner; and merging the surface shape of the prepared tooth with the subgingival marginal shape to obtain a final three-dimensional shape of the prepared tooth.
    Type: Application
    Filed: February 18, 2022
    Publication date: August 25, 2022
    Inventors: Hyo Sang JEONG, Su Min HAN
  • Publication number: 20220183799
    Abstract: A tomography convergence-type oral scanner includes an oral scanning unit comprising a projector including a first light source for generating visible light, and a camera for generating image data by receiving the visible light reflected from a tooth; an optical tomography scanning unit comprising an OCT body including a second light source that has a different wavelength from the first light source and generates a measurement light incident on the tooth, a beam splitter for splitting the measurement light into a reference light and a measurement light, a reference mirror that reflects the reference light, and a photodetector for detecting an interference light, and an OCT scan probe including a collimator for converting the measurement light into a parallel light and a MEMS mirror for reflecting the converted parallel light; and a dichroic mirror for transmitting the visible light and reflecting the parallel light, thereby irradiating a tooth to be measured.
    Type: Application
    Filed: November 23, 2021
    Publication date: June 16, 2022
    Inventors: Hyo Sang JEONG, Su Min HAN
  • Publication number: 20140012141
    Abstract: A diagnosis-and-display integrated optical tomographic imaging otoscope for examining otitis media. A hollow casing includes an ear specular disposed on a front surface, a display including an LCD disposed on a rear surface, and a manipulating handle on a lower part. An image-photographing part includes a CCD camera inside the casing, and photographs an ear drum image of a patient through the ear specular. A section-photographing part includes a collimator and a galvanometer mirror inside the casing, and photographs section images of the ear drum and a middle ear of the patient. The ear drum image obtained by the image-photographing part and the section images of the ear drum and the middle ear are obtained in a non-incision method by the section-photographing part, and are displayed in real time on the LCD such that desirable images can be stored.
    Type: Application
    Filed: September 9, 2013
    Publication date: January 9, 2014
    Applicant: Kyungpook National University Industry-Academic Cooperation Foundation
    Inventors: Jee Hyun Kim, Nam Hyun Cho, Hyeong Il Kwon, Un Sang Jung, Hyo Sang Jeong