公开(公告)号：US20240163413A1

公开(公告)日：2024-05-16

申请号：US18418209

申请日：2024-01-19

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier ,  Tal Levy ,  Gal Peleg ,  Eliran Dafna ,  Sergei Ozerov ,  Tal Verker ,  Nir Makmel ,  Yossef Atiya

IPC: H04N13/204 ,  G01B11/25 ,  G06T7/521 ,  H04N1/00

CPC classification number: H04N13/204 ,  G01B11/25 ,  G06T7/521 ,  H04N1/00018

Abstract: An intraoral scanner comprises one or more structured light projectors and two or more cameras, where each structured light projector projects a pattern of light onto an intraoral three-dimensional (3D) surface and the two or more cameras capture one or more sets of images, wherein each image includes at least a portion of the projected pattern of light. A processor solves a correspondence problem within a set of images of the one or more sets of images such that points in 3D space are determined based on correspondence of captured features in the set of images to projected features of at least the portion of the projected pattern, wherein said points in 3D space form a solution to the correspondence problem. The processor calibrates the intraoral scanner by performing an adjustment to stored calibration data associated with the intraoral scanner based on the solution to the correspondence problem.

公开(公告)号：US11896461B2

公开(公告)日：2024-02-13

申请号：US16446181

申请日：2019-06-19

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier ,  Yossef Atiya ,  Arkady Rudnitsky ,  Nir Makmel ,  Sergei Ozerov ,  Tal Verker ,  Tal Levy

IPC: A61C9/00 ,  G06T7/80 ,  G02B27/42 ,  G06T17/00 ,  H04N9/31 ,  G06T7/521 ,  A61B1/00 ,  A61B1/24 ,  G06T7/586

CPC classification number: A61C9/006 ,  A61B1/00096 ,  A61B1/00172 ,  A61B1/00193 ,  A61B1/24 ,  G02B27/4222 ,  G02B27/4227 ,  G06T7/521 ,  G06T7/586 ,  G06T7/80 ,  G06T7/85 ,  G06T17/00 ,  H04N9/3161 ,  G06T2207/10024 ,  G06T2207/10028 ,  G06T2207/10052 ,  G06T2207/30036

Abstract: An apparatus for intraoral scanning includes an elongate handheld wand that has a probe. One or more light projectors and two or more cameras are disposed within the probe. The light projectors each has a pattern generating optical element, which may use diffraction or refraction to form a light pattern. Each camera may be configured to focus between 1 mm and 30 mm from a lens that is farthest from the camera sensor. Other applications are also described.

公开(公告)号：US11826225B2

公开(公告)日：2023-11-28

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

IPC: A61C9/00 ,  G06T7/80 ,  G02B27/42 ,  G06T17/00 ,  H04N9/31 ,  G06T7/521 ,  A61B1/00 ,  A61B1/24 ,  G06T7/586

CPC classification number: A61C9/006 ,  A61B1/00096 ,  A61B1/00172 ,  A61B1/00193 ,  A61B1/24 ,  G02B27/4222 ,  G02B27/4227 ,  G06T7/521 ,  G06T7/586 ,  G06T7/80 ,  G06T7/85 ,  G06T17/00 ,  H04N9/3161 ,  G06T2207/10024 ,  G06T2207/10028 ,  G06T2207/10052 ,  G06T2207/30036

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.

公开(公告)号：US11793611B2

公开(公告)日：2023-10-24

申请号：US17694462

申请日：2022-03-14

Applicant: Align Technology, Inc.

Inventor： Yossef Atiya ,  Tal Verker

IPC: A61C9/00 ,  A61C1/08 ,  A61B5/00 ,  A61B1/247 ,  A61B1/06 ,  A61B1/00 ,  G01B11/24 ,  G01B11/30

CPC classification number: A61C9/0066 ,  A61B1/00011 ,  A61B1/00045 ,  A61B1/000094 ,  A61B1/0676 ,  A61B1/247 ,  A61B5/0013 ,  A61B5/0022 ,  A61B5/0088 ,  A61B5/7228 ,  A61C1/088 ,  A61C9/0046 ,  A61C9/0053 ,  G01B11/24 ,  G01B11/30 ,  A61B2562/0233

Abstract: An apparatus includes a probe and a light source 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. The focus changing assembly is configured to focus the light to a plurality of external focal planes to illuminate a patient's teeth, wherein at least a portion of the focus changing assembly is located at a back focal length of the object space lens. The apparatus includes a detector to measure characteristics of incident light returning from an 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.

公开(公告)号：US20230233087A1

公开(公告)日：2023-07-27

申请号：US18190026

申请日：2023-03-24

Applicant: Align Technology, Inc.

Inventor： Yossef Atiya ,  Tal Verker ,  Nir Makmel

IPC: A61B5/00 ,  G02B13/16 ,  G02B6/26 ,  F21V8/00 ,  G01B11/24 ,  G01B11/245 ,  A61C9/00 ,  G02B5/04 ,  G02B23/24

CPC classification number: A61B5/0088 ,  G02B13/16 ,  G02B6/262 ,  G02B6/0006 ,  G01B11/24 ,  G01B11/245 ,  A61C9/0066 ,  G02B6/0046 ,  G02B5/04 ,  G02B23/2461 ,  G01B2210/50 ,  G02B2006/0098

Abstract: An intraoral scanner comprises a light source for generating light, an optics system for focusing the light, and a light-guiding part having an entrance and an exit. 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, and exits the light-guiding part via the exit. 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.

公开(公告)号：US11563929B2

公开(公告)日：2023-01-24

申请号：US16910042

申请日：2020-06-23

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier ,  Tal Levy ,  Gal Peleg ,  Eliran Dafna ,  Sergei Ozerov ,  Tal Verker ,  Nir Makmel ,  Yossef Atiya

IPC: H04N13/204 ,  G01B11/25 ,  G06T7/521 ,  H04N1/00

Abstract: A method for generating a 3D image includes driving structured light projector(s) to project a pattern of light on an intraoral 3D surface, and driving camera(s) to capture images, each image including at least a portion of the projected pattern, each one of the camera(s) comprising an array of pixels. A processor compares a series of images captured by each camera and determines which of the portions of the projected pattern can be tracked across the images. The processor constructs a three-dimensional model of the intraoral three-dimensional surface based at least in part on the comparison of the series of images. Other embodiments are also described.

公开(公告)号：US20220192801A1

公开(公告)日：2022-06-23

申请号：US17694462

申请日：2022-03-14

Applicant: Align Technology, Inc.

Inventor： Yossef Atiya ,  Tal Verker

IPC: A61C9/00 ,  A61C1/08 ,  A61B5/00 ,  A61B1/247 ,  A61B1/06 ,  A61B1/00 ,  G01B11/24 ,  G01B11/30

Abstract: An apparatus includes a probe 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. The light focusing assembly has at least one of the following properties: 1) at least a portion of the focus changing assembly is located at a back focal length of the object space lens, 2) the light focusing assembly is free of moving parts, or 3) the light focusing assembly comprises double telecentric confocal optics. The apparatus includes a detector to measure characteristics of incident light returning from an 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.

公开(公告)号：US20210022611A1

公开(公告)日：2021-01-28

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 ,  F21V8/00 ,  G01B11/24 ,  G01B11/245 ,  A61C9/00 ,  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 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.

公开(公告)号：US10756511B2

公开(公告)日：2020-08-25

申请号：US16192359

申请日：2018-11-15

Applicant: Align Technology, Inc.

Inventor： Yossef Atiya ,  Tal Verker

IPC: H01S5/00 ,  H01S5/068 ,  H01S5/183 ,  H01S5/42

Abstract: Methods and apparatus for measuring objects comprise a plurality of light sources to generate a plurality of light beams directed toward a spot generator array comprising a plurality of spot generating lenses. The plurality of light sources is separated from the spot generator array with a separation distance sufficient to overlap the plurality of light beams at each of the spot generating lenses. The overlap of each of the beams at each of the spot generating lenses provides smoothing of the energy profile of the light energy incident on the spot generating lenses. The spot generator array generates focused spots comprising overlapping focused beams. The overlapping beams may comprise overlapping beams of a vertical cavity surface emitting laser (VCSEL) array, and the overlapping focused beams can decrease optical artifacts.

公开(公告)号：US10528636B2

公开(公告)日：2020-01-07

申请号：US15672248

申请日：2017-08-08

Applicant: Align Technology, Inc.

Inventor： Gilad Elbaz ,  Erez Lampert ,  Yossef Atiya ,  Avi Kopelman ,  Ofer Saphier ,  Maayan Moshe ,  Shai Ayal

IPC: A61B1/24 ,  A61B5/00 ,  A61C9/00 ,  G06T7/55 ,  G06T7/73 ,  G06T15/08 ,  H04N13/221 ,  H04N13/246 ,  H04N13/254 ,  H04N13/257 ,  H04N13/271 ,  G06F16/9535 ,  G06T17/00 ,  G06Q50/00

Abstract: Methods and apparatuses for generating a model of a subject's teeth. Described herein are intraoral scanning methods and apparatuses for generating a three-dimensional model of a subject's intraoral region (e.g., teeth) including both surface features and internal features. These methods and apparatuses may be used for identifying and evaluating lesions, caries and cracks in the teeth. Any of these methods and apparatuses may use minimum scattering coefficients and/or segmentation to form a volumetric model of the teeth.