公开(公告)号：US20210389549A1

公开(公告)日：2021-12-16

申请号：US17279148

申请日：2019-09-27

Applicant: DENTSPLY SIRONA inc.

Inventor： Markus BERNER ,  Martin SEIB ,  Fabrizio CONFALONIERI

IPC: G02B7/04 ,  G02B27/64 ,  A61B5/00

Abstract: The present invention relates to an apparatus (28) for varying a focal point (24) of an optical system in a dental 3D-scanner (10), comprising: a lens unit (30) with a lens (20) being movable between a front reversal position and a rear reversal position to vary a position of a focal point with respect to a scan object (22): a guide unit (34) for guiding a movement of the lens unit between the front reversal position and the rear reversal position along a guide axis (48) being parallel to an optical axis (46) of the lens; and a drive unit (36) for driving the movement of the lens unit, said drive unit including a linear motor (38) with an anchor (40) and a stator (42), said anchor being movable along a drive axis (44) of the drive unit that is parallel to the guide axis, said stator being affixed to the guide unit. The present invention further relates to a dental 3D-scanner (10) for scanning a three-dimensional scan object.

公开(公告)号：US20190376784A1

公开(公告)日：2019-12-12

申请号：US16003628

申请日：2018-06-08

Applicant: DENTSPLY SIRONA Inc.

Inventor： Michael TEWES ,  Markus BERNER

IPC: G01B11/25

Abstract: A device, method and system for utilizing an optical array generator, confocal measurement/depth of focus techniques to generate dynamic patterns in a camera for projection onto the surface of an object for three-dimensional (3D) measurement. Projected light patterns are used to generate optical features on the surface of an object to be measured and optical 3D measuring methods which operate according to triangulation, confocal and depth of focus principles are used to measure the object.

公开(公告)号：US20180192964A1

公开(公告)日：2018-07-12

申请号：US15742556

申请日：2016-07-08

Applicant: DENTSPLY SIRONA inc.

Inventor： Severin STALDER ,  Markus BERNER ,  Konrad KLEIN

IPC: A61B5/00 ,  A61B5/107 ,  A61B90/00 ,  A61B90/50

CPC classification number: A61B5/7425 ,  A61B5/0088 ,  A61B5/1077 ,  A61B5/4547 ,  A61B5/6886 ,  A61B5/743 ,  A61B90/361 ,  A61B90/50 ,  A61B2017/00216 ,  A61B2034/2048 ,  A61B2034/2065 ,  A61B2090/365 ,  A61B2090/372 ,  A61B2090/502

Abstract: A system for scanning anatomical structures and for visualizing the scanning result, wherein the system includes an intraoral scanner, which intraorally captures an image of the anatomical structures, an extraoral detection unit, which detects a spatial position of the intraoral scanner relative to an observer or a person conducting the scan, and a computing unit, which, during the scanning procedure, connects the scanner with a screen and the detection unit and generates a scanning result based on the intraorally captured image of the anatomical structures and the detected spatial position of the intraoral scanner relative to the observer, and which, during pauses in the scanning procedure, estimates the position, orientation and scaling of the anatomical structures and, as a scanning result, generates an image of the anatomical structures corresponding to the estimation, and wherein the screen displays the scanning result generated by the computing unit.

公开(公告)号：US20210377509A1

公开(公告)日：2021-12-02

申请号：US17283067

申请日：2019-06-03

Applicant: DENTSPLY SIRONA Inc.

Inventor： Michael TEWES ,  Markus BERNER

IPC: H04N13/257 ,  H04N13/207 ,  H04N13/254 ,  G06T7/90 ,  G06T7/40 ,  G06T17/00 ,  G06T15/04 ,  H04N13/296 ,  G01B11/25 ,  G01J3/50

Abstract: A device and method and system for utilizing confocal measurement and an optical arrangement to produce 3D color images. A color measurement optical path and a 3D measurement optical path may coincide at least at an object side of the device, and a minimal amount of light is extracted from a monitoring beam for color measurement without affecting 3D measurement.

公开(公告)号：US20170128173A1

公开(公告)日：2017-05-11

申请号：US15129728

申请日：2015-03-27

Applicant: Dentsply Sirona Inc.

Inventor： Markus BERNER ,  Frank THIEL

IPC: A61C9/00 ,  A61B5/00

CPC classification number: A61C9/0053 ,  A61B5/0062 ,  A61B5/0088 ,  A61B5/1077 ,  A61B5/1079 ,  G01B11/2518

Abstract: The invention relates to a scanning device, comprising a handle (10) to be held by an operating person and a mouthpiece (20). The scanning device is inserted into the mouth of a patient by means of the mouthpiece (20). There, during a recording by means of a sensing apparatus provided in the mouthpiece and a scanning apparatus (60), a section of a dental arch in the mouth is scanned and three-dimensionally measured, wherein many individual scans of different sections of the dental arch are recorded and are combined into a total image. The scanning device also has a drive apparatus (80), which drives the sensing apparatus in such a way that the sensing apparatus moves from one section to a next section of the dental arch in order to perform a particular individual scan, and a control apparatus (70), which controls the drive apparatus (80) in such a way that the drive apparatus moves the sensing apparatus to a desired location of the dental arch.