公开(公告)号：US20230210356A1

公开(公告)日：2023-07-06

申请号：US18007558

申请日：2021-05-21

Applicant: DENTSPLY SIRONA Inc.

Inventor： Michael TEWES ,  Andreas UNGER

IPC: A61B1/24 ,  A61B1/06 ,  A61B1/00 ,  A61B1/04 ,  A61B1/12

CPC classification number: A61B1/24 ,  A61B1/063 ,  A61B1/0653 ,  A61B1/00009 ,  A61B1/00045 ,  A61B1/04 ,  A61B1/128

Abstract: The present invention, a handheld intraoral dental 3D camera comprising: a hand-held housing which includes: an optical unit comprising: an illuminating means for producing light, and a projecting means for projecting the light produced by the illuminating means onto a region of a tooth surface of a patient; a sensing unit for sensing an image of the projected light reflected by the region, characterized in that the illuminating means comprises a semiconductor laser for producing the light; and the projection means comprises phosphor which is arranged to receive the light produced by the semiconductor laser, wherein the projection means is further adapted to project the fluorescing light from the phosphor onto the region of the tooth surface of the patient.

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：US20250127401A1

公开(公告)日：2025-04-24

申请号：US18493174

申请日：2023-10-24

Applicant: DENTSPLY SIRONA Inc.

Inventor： Frederike FRANKE ,  Bjoern VOSS ,  Thomas ERTL ,  Michael TEWES ,  Andreas UNGER

IPC: A61B5/00 ,  A61B1/24

Abstract: Light is projected from a light source in a first direction towards a tooth. The light source generates at least infrared light in the wavelength range of 950 nm to 2500 nm. A colloidal quantum dot (CQD) sensor records one or more surface light distribution images produced at the surface of the tooth by the projected light and the one or more surface light distribution images are used to compute a defect condition of the tooth.

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.