Patents by Inventor Weon-Joon LEE
Weon-Joon LEE 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: 12196541Abstract: A calibration method of an optical coherence tomography (OCT) device and a camera using the same target includes irradiating a shape measurement light to a calibration target, obtaining a surface shape image thereof by detecting light reflected by a surface of the calibration target using a shape measurement camera, and calibrating the surface shape image according to an actual shape of the calibration target; obtaining surface and internal three-dimensional images of the calibration target by scanning with a layer measurement light using the OCT measurement unit, extracting a surface shape image of the calibration target from the three-dimensional images, and calibrating the surface shape image according to the actual surface shape of the calibration target; and matching a calibration image obtained by the shape measurement camera and a surface calibration image obtained by the OCT measurement unit to be displayed at the same spatial coordinates.Type: GrantFiled: December 12, 2022Date of Patent: January 14, 2025Assignees: HUVITZ CO., LTD., OSSVIS C0., LTD.Inventors: Seong Hun Shin, Min Soo Cho, Dong Won Kim, Weon Joon Lee
-
Patent number: 12156784Abstract: 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: GrantFiled: February 18, 2022Date of Patent: December 3, 2024Assignees: HUVITZ CO., LTD., OSSVIS CO., LTD.Inventors: Hyo Sang Jeong, Su Min Han, Weon Joon Lee
-
Publication number: 20240346693Abstract: A method of calibrating an intraoral scanner includes irradiating light of a third color using a projector onto a first calibration plate having a background of a first color and patterns of a second color, which are arranged at predetermined intervals within the background; obtaining an image of the patterns with an increased contrast by photographing the first calibration plate with a camera; calibrating the camera by comparing the image of the patterns with actual positions of the patterns; irradiating the first calibration plate with a patterned light having a predetermined pattern of a fourth color using the projector; obtaining an image of a pattern formed by the patterned light of the projector by photographing the first calibration plate with the camera; and calibrating the projector by comparing the pattern image with a target irradiation position of a pattern irradiated by the projector.Type: ApplicationFiled: March 28, 2024Publication date: October 17, 2024Inventors: Myoung NAMGUNG, Min Soo CHO, Weon Joon LEE
-
Publication number: 20240325126Abstract: 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: ApplicationFiled: March 28, 2024Publication date: October 3, 2024Inventors: Hyo Sang JEONG, Min Soo CHO, Weon Joon LEE
-
Patent number: 12062212Abstract: 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: GrantFiled: February 18, 2022Date of Patent: August 13, 2024Assignees: Huvitz Co., Ltd., Ossvis Co., Ltd.Inventors: Hyo Sang Jeong, Min Soo Cho, Weon Joon Lee
-
Publication number: 20240207024Abstract: An apparatus for processing a dental prosthesis, which can reduce the time required for processing work by performing processing preparation work in advance, and can improve convenience by minimizing the movement path of a user, includes an intraoral scanner configured to obtain oral shape data by scanning an oral cavity of a patient; a remote control unit comprising CAD/CAM software configured to generate processing data for a dental prosthesis from the obtained oral shape data; and a prosthesis processing unit configured to perform processing preparation work for a prosthesis and to process the dental prosthesis according to prosthesis processing data transmitted from the remote control unit, and having a user interface through which a processing preparation command for performing the processing preparation work is directly entered.Type: ApplicationFiled: December 5, 2023Publication date: June 27, 2024Inventors: Seung Suk HA, Beom Mo KIM, Young Gil SHIM, Yong Han KIM, Weon Joon LEE
-
Patent number: 12011336Abstract: 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: GrantFiled: November 23, 2021Date of Patent: June 18, 2024Assignees: HUVITS CO., LTD., OSSVIS CO., LTD.Inventors: Hyo Sang Jeong, Su Min Han, Weon Joon Lee
-
Publication number: 20240189077Abstract: A dental prosthesis processing device that processes a workpiece made of ceramic or the like into a prosthesis of a desired shape includes one or more processing tools for processing a workpiece into a prosthesis of a predetermined shape; a spindle on which the processing tools are replaceably mounted and that is spatially movable in position; a processing tool replacement obstruction part located in close proximity to the processing tools and/or the spindle and configured to obstruct the processing tools from being replaced; and a controller configured to determine whether to replace the processing tools. Depending on whether the replacement is necessary or not, the controller allows or prevents the processing tools from being replaced by bringing the processing tools and/or the spindle and the processing tool replacement obstruction part away from or close to each other.Type: ApplicationFiled: December 1, 2023Publication date: June 13, 2024Inventors: Byung Woo KYON, Young Gil SHIM, Yong Han KIM, Weon Joon LEE
-
Publication number: 20240066650Abstract: A dental drilling device for manufacturing a dental prosthesis by processing a material made of ceramic or the like includes a spindle including a spindle shaft rotatably mounted inside a drilling device housing and a spindle shaft fan formed in a wing shape on an outer surface of the spindle shaft; a fixing socket fixedly mounted to one end of the drilling device housing and surrounding one end of the spindle at a predetermined interval; a processing drill mounted on a front end of the spindle to process a workpiece; and a driving motor coupled to the other end of the spindle to rotate the spindle.Type: ApplicationFiled: August 3, 2023Publication date: February 29, 2024Inventors: Byung Woo KYON, Weon Joon LEE
-
Publication number: 20230263396Abstract: 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: ApplicationFiled: February 21, 2023Publication date: August 24, 2023Inventors: Hyo Sang JEONG, Su Min HAN, Jee Hyun KIM, Kyu Bok LEE, Keun Ba Da SON, Weon Joon LEE
-
Publication number: 20230263395Abstract: 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: ApplicationFiled: February 21, 2023Publication date: August 24, 2023Inventors: Hyo Sang JEONG, Su Min HAN, Jee Hyun KIM, Kyu Bok LEE, Ho Seong CHO, Weon Joon LEE
-
Publication number: 20230194245Abstract: A calibration method of an optical coherence tomography (OCT) device and a camera using the same target includes irradiating a shape measurement light to a calibration target, obtaining a surface shape image thereof by detecting light reflected by a surface of the calibration target using a shape measurement camera, and calibrating the surface shape image according to an actual shape of the calibration target; obtaining surface and internal three-dimensional images of the calibration target by scanning with a layer measurement light using the OCT measurement unit, extracting a surface shape image of the calibration target from the three-dimensional images, and calibrating the surface shape image according to the actual surface shape of the calibration target; and matching a calibration image obtained by the shape measurement camera and a surface calibration image obtained by the OCT measurement unit to be displayed at the same spatial coordinates.Type: ApplicationFiled: December 12, 2022Publication date: June 22, 2023Inventors: Seong Hun SHIN, Min Soo CHO, Dong Won KIM, Weon Joon LEE
-
Publication number: 20230194238Abstract: 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: ApplicationFiled: December 12, 2022Publication date: June 22, 2023Inventors: Hyo Sang JEONG, Min Soo CHO, Weon Joon LEE
-
Publication number: 20230172454Abstract: 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: ApplicationFiled: November 29, 2022Publication date: June 8, 2023Inventors: Hyo Sang JEONG, Min Soo CHO, Su Min HAN, Weon Joon LEE
-
Patent number: 9107611Abstract: An optical coherence tomography device (OCT) is capable of controlling a distance between an eye to be examined (object) and the OCT and accurately center-aligning the eye. A mire ring optical system emits a measuring mire ring light to an object to be examined. A dichroic mirror separates an optical path of illumination light reflected from the object from the optical path of the signal light originating from the tomographic image formation section and delivers a reflected image to an image formation section and a tomographic image formation section. An objective lens condenses light reflected from the object, and a controller calculates movement distance of the OCT from the difference between a position of the image of the mire ring light and a position of an optical axis of the OCT The OCT is then moved according to the calculated movement.Type: GrantFiled: March 6, 2014Date of Patent: August 18, 2015Assignee: HUVITZ CO., LTD.Inventors: Weon-Joon Lee, Joong-Jae Lee
-
Publication number: 20140253926Abstract: An optical coherence tomography device (OCT) is capable of controlling a distance between an eye to be examined (object) and the OCT and accurately center-aligning the eye. A mire ring optical system emits a measuring mire ring light to an object to be examined. A dichroic mirror separates an optical path of illumination light reflected from the object from the optical path of the signal light originating from the tomographic image formation section and delivers a reflected image to an image formation section and a tomographic image formation section. An objective lens condenses light reflected from the object, and a controller calculates movement distance of the OCT from the difference between a position of the image of the mire ring light and a position of an optical axis of the OCT The OCT is then moved according to the calculated movement.Type: ApplicationFiled: March 6, 2014Publication date: September 11, 2014Applicant: HUVITZ CO., LTD.Inventors: Weon-Joon LEE, Joong-Jae LEE