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公开(公告)号：US20230293272A1
公开(公告)日：2023-09-21
申请号：US18136831
申请日：2023-04-19
Applicant: Align Technology, Inc.
Inventor： Tal Verker , Adi Levin , Ofer Saphier , Maayan Moshe
CPC classification number: A61C9/0066 , G01B11/24 , G02B23/2446 , G02B21/006 , G02B27/0025 , G02B23/2461 , G02B23/26
Abstract: Calibrating an intraoral scanner includes obtaining reference data of a reference three-dimensional (3D) representation of a calibration object and obtaining, based on the intraoral scanner being used by a user to scan the 3D calibration object, and from one or more device to real-world coordinate transformations of two-dimensional (2D) images of the 3D calibration object, measurement data. Calibrating the intraoral scanner further includes aligning the measurement data to the reference data to obtain alignment data and updating, based on the alignment data, said one or more transformations.
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公开(公告)号：US20230156173A1
公开(公告)日：2023-05-18
申请号：US18156349
申请日：2023-01-18
Applicant: Align Technology, Inc.
Inventor： Ofer Saphier , Tal Levy , Gal Peleg , Eliran Dafna , Sergei Ozerov , Tal Verker , Nir Makmel , Yossef Atiya
IPC: H04N13/204 , G06T7/521 , G01B11/25 , H04N1/00
CPC classification number: H04N13/204 , G06T7/521 , G01B11/25 , H04N1/00018
Abstract: An intraoral scanning system comprises and intraoral scanner and a processor. The intraoral scanner comprises one or more cameras and one or more structured light projectors, the intraoral scanner to generate a series of images using the one or more cameras, each image including at least a portion of a pattern projected by the one or more structured light projectors onto an intraoral three-dimensional surface. The processor runs a correspondence algorithm to compute respective three-dimensional positions of a plurality of features of the pattern on the intraoral three-dimensional surface, as captured in the series of images. The processor identifies the computed three-dimensional position of a detected feature of the pattern as corresponding to a particular projector ray r, in at least a subset of the series of images. The processor tracks the particular projector ray r across one or more additional images of the series of images.
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公开(公告)号：US11638525B2
公开(公告)日：2023-05-02
申请号：US17570285
申请日：2022-01-06
Applicant: Align Technology, Inc.
Inventor： Yossef Atiya , Tal Verker , Nir Makmel
IPC: A61B5/00 , G02B13/16 , G02B6/26 , G01B11/24 , G01B11/245 , A61C9/00 , G02B6/00 , F21V8/00 , G02B5/04 , G02B23/24
Abstract: An apparatus for dental imaging comprises a light source for generating light, an optics system for focusing the light, and a probe head. The light source, the optics system and the probe head are arranged such that the light passes through the optics system, passes through the probe head, and exits the probe head. The optics system is configured such that chief rays of the light before entering the probe head are divergent to each other, wherein an angle defined by a marginal ray of an outermost beam of the light is complementary to an angle defined by an extreme off-axis chief ray of the light with respect to the optical axis.
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公开(公告)号：US20220302677A1
公开(公告)日：2022-09-22
申请号：US17835857
申请日：2022-06-08
Applicant: Align Technology, Inc.
Inventor： Yossef Atiya , Tal Verker
Abstract: In embodiments, a system for scanning an intraoral cavity comprises an intraoral scanner to generate intraoral scan data of the intraoral cavity and viewfinder images of the intraoral cavity, a display, and a processing unit operatively connected to the intraoral scanner and to the display. The processing unit is to: receive the intraoral scan data and the viewfinder images from the intraoral scanner; generate a three-dimensional (3D) digital model of the intraoral cavity using the intraoral scan data; output the 3D digital model to the display; output the viewfinder images to the display; determine which portions of the intraoral cavity have been scanned; determine a current field of view of the intraoral scanner; determine a visual indicator that provides guidance for positioning and orienting the field of view of the intraoral scanner; and output the visual indicator to the display.
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公开(公告)号：US20220280269A1
公开(公告)日：2022-09-08
申请号：US17826016
申请日：2022-05-26
Applicant: Align Technology, Inc.
Inventor： Ofer Saphier , Yossef Atiya , Arkady Rudnitsky , Nir Makmel , Sergei Ozerov , Tal Verker , Tal Levy
Abstract: An apparatus for intraoral scanning comprises an elongate handheld wand comprising a probe at a distal end, one or more light projectors, and two or more cameras. Each light projector comprises at least one light source configured to generate light and a pattern generating optical element configured to generate a pattern of light when the light is transmitted through the pattern generating optical element. Each camera comprises a camera sensor and one or more lenses and is configured to capture a plurality of images that depict at least a portion of the projected pattern of light on an intraoral surface, wherein each camera is configured to focus at an object focal plane that is located between about 1 mm and about 30 mm from a lens of the one or more lenses that is farthest from the camera sensor.
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Patent Agency Ranking
公开(公告)号：US20220257353A1
公开(公告)日：2022-08-18
申请号：US17740113
申请日：2022-05-09
Applicant: Align Technology, Inc.
Inventor： Tal Verker , Adi Levin , Ofer Saphier , Maayan Moshe
Abstract: A method comprises obtaining reference data about a 3D calibration object, the reference data comprising known coordinates for a plurality of points on the object, and obtaining measurement data comprising measurements for the plurality of points on the object, the measurement data having been generated based on scanning of the object by an uncalibrated intraoral scanner. The method comprises comparing the measurement data to the reference data to determine differences therebetween and applying the determined differences between the measurement data and the reference data for the plurality of points to a function to generate a compensation model that compensates for one or more inaccuracies of the intraoral scanner. The compensation model is then stored, wherein the compensation model causes the intraoral scanner to be a calibrated intraoral scanner and is usable to correct measurement errors of the intraoral scanner caused by the one or more inaccuracies of the intraoral scanner.
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公开(公告)号：US11387627B2
公开(公告)日：2022-07-12
申请号：US16933916
申请日：2020-07-20
Applicant: Align Technology, Inc.
Inventor： Yossef Atiya , Tal Verker
Abstract: A system for intraoral scanning includes a display, a processing unit, and a scanner to generate scan data and viewfinder images of an intraoral cavity. The processing unit is to: receive the scan data and the viewfinder images; generate a 3D model of the intraoral cavity using the intraoral scan data; output the 3D model to the display; output the viewfinder images to the display; determine which portions of the intraoral cavity have been scanned; determine a current field of view of the scanner; determine, based on the current field of view and the determined portions of the intraoral cavity that have been scanned, a visual indicator that provides guidance for positioning and orienting the field of view of the scanner; and output the visual indicator to the display.
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公开(公告)号：US11369271B2
公开(公告)日：2022-06-28
申请号：US17037398
申请日：2020-09-29
Applicant: Align Technology, Inc.
Inventor： Yossef Atiya , Tal Verker , Nir Makmel
IPC: A61B5/00 , G02B13/16 , G02B6/26 , G01B11/24 , G01B11/245 , G02B5/04 , G02B23/24 , G02B6/00 , F21V8/00 , A61C9/00
Abstract: An apparatus for dental imaging comprises a light source for generating light, an optics system for focusing the light, and a light-guiding part having an entrance face and an exit face. The light source, the optics system and the light-guiding part are arranged such that the light passes through the optics system, enters the light-guiding part via the entrance face, and exits the light-guiding part via the exit face. The optics system is configured such that, upon entering the light-guiding part, an outermost chief ray of the light with respect to an optical axis of the optics system is divergent to the optical axis and an outermost marginal ray of the light with respect to the optical axis is parallel or divergent to the optical axis.
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公开(公告)号：US20220023015A1
公开(公告)日：2022-01-27
申请号：US17492453
申请日：2021-10-01
Applicant: Align Technology, Inc.
Inventor： Tal Verker , Adi Levin , Ofer Saphier , Maayan Moshe
Abstract: A system comprises alight source to provide light, an optical system comprises focusing optics to focus the light onto a focal surface, a detector to measure returning light that is reflected off of a three dimensional object, a translation mechanism to displace the focal surface along an imaging axis defined by the optical path, and one or more processor. The one or more processor is to generate measurement data comprising coordinates of a plurality of surface points of the three dimensional object based on the measured returning light; adjust the coordinates of the subset of the plurality of surface points along up to three axes to correct the measurement data so as to remove inaccuracies caused by changes in magnification at the focal surface; and generate a three dimensional model of the three dimensional object using corrected measurement data.
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公开(公告)号：US20200330196A1
公开(公告)日：2020-10-22
申请号：US16922967
申请日：2020-07-07
Applicant: Align Technology, Inc.
Inventor： Yossef Atiya , Tal Verker
Abstract: An apparatus includes a probe sized to be at least partially inserted into an intraoral cavity of a patient and an illumination unit configured to output light. The apparatus includes a light focusing assembly comprising an image space lens, an object space lens and a focus changing assembly between the image space lens and the object space lens and being configured to: overlap a plurality of light beams of the light within the light focusing assembly; and focus the light to a plurality of external focal planes to illuminate the patient's teeth. The apparatus includes a detector to measure one or more characteristics of incident light returning from the illuminated patient's teeth and a processor coupled to the detector and configured to generate data representative of a topography of the patient's teeth based on the one or more measured characteristics of the incident light returning from the illuminated patient's teeth.
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