Patents Assigned to DÛRR DENTAL AG
  • Patent number: 10393889
    Abstract: A device and method for reading an exposed imaging plate generate read-out light and utilize a deflection unit to direct the read-out light in a scanning movement over the imaging plate. The deflection unit has a micromirror to deflect impinging read-out light towards the imaging plate. The micromirror can swivel about a first swivel axis and about a second swivel axis distinct from the first. A detector unit detects fluorescent light emitted from the imaging plate at locations where the read-out light impinges. An evaluating unit evaluates signals received from the detector unit and builds up an image that is stored in the imaging plate. The evaluating unit takes into account, when evaluating the signals received from the detector unit, that points on the imaging plate are subjected to the read-out light variably often and/or for variable time lengths while the micromirror oscillates about the first and the second swivel axis.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: August 27, 2019
    Assignee: DÜRR DENTAL AG
    Inventors: Bernd Philipps, Michael Weber, Alexander Hack
  • Patent number: 10139497
    Abstract: A device configured to read an exposed imaging plate, comprises a light-source that generates read-out light. A deflection unit directs the read-out light in a scanning movement over the imaging plate. The deflection unit comprises a micromirror that deflects impinging read-out light towards the imaging plate. The micromirror swivels about a first swivel axis and about a different second swivel axis. The micromirror oscillates with a first frequency about the first swivel axis and simultaneously with a different second frequency about the second swivel axis. A detector unit detects fluorescent light which is emitted from the imaging plate at locations where the read-out light impinges.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: November 27, 2018
    Assignee: Dürr Dental AG
    Inventors: Bernd Philipps, Michael Weber, Alexander Hack
  • Patent number: 10130262
    Abstract: A camera head of a dental camera for detecting caries in an interdental space has an illuminating device for illuminating a tooth adjacent to the interdental space, which includes an infrared light source. The camera head further includes optics which have an image plane and an object plane, wherein an image sensor is located in the image plane, and the object plane divides the space into two half spaces, wherein a first half space contains the optics and is located in front of the object plane, and a second half space is located behind the object plane, both as seen from the optics. The illuminating device and the optics are designed and arranged with respect to one another in such a way that the illuminating device is arranged in the first half space and infrared light exiting the illuminating device is aimed in the direction of the second half space.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: November 20, 2018
    Assignee: Dürr Dental AG
    Inventors: Herbert Gebhardt, Peter Lais, Raimund Maier
  • Publication number: 20150027561
    Abstract: The invention relates to a suction device for dental, medical or industrial purposes, comprising a suction system and a housing (12) in which the suction system (50) is accommodated. The suction device is characterized in that the housing (12) is composed of at least two housing shells (14, 16) that can be assembled and are manufactured from a foamable material, in that at least one of the housing shells (14, 16) has support surfaces that support and/or hold the components of the suction system (50) in the housing (12), and in that at least one of the housing shells (14, 16) forms at least one functional component of the suction system (50).
    Type: Application
    Filed: January 24, 2013
    Publication date: January 29, 2015
    Applicant: Dürr Dental AG
    Inventor: Ralf Mauthe
  • Publication number: 20140313299
    Abstract: A camera head of a dental camera for detecting caries in an interdental space has an illuminating device for illuminating a tooth adjacent to the interdental space, which includes an infrared light source. The camera head further includes optics which have an image plane and an object plane, wherein an image sensor is located in the image plane, and the object plane divides the space into two half spaces, wherein a first half space contains the optics and is located in front of the object plane, and a second half space is located behind the object plane, both as seen from the optics. The illuminating device and the optics are designed and arranged with respect to one another in such a way that the illuminating device is arranged in the first half space and infrared light exiting the illuminating device is aimed in the direction of the second half space.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 23, 2014
    Applicant: Dürr Dental AG
    Inventors: Herbert Gebhardt, Peter Lais, Raimund Maier
  • Publication number: 20140302452
    Abstract: A dental camera system for creating an image of an object has a dental camera, which comprises a housing and optics arranged therein together with an image sensor. The dental camera system further comprises an evaluation unit which cooperates with the image sensor to capture the object. To achieve a dental camera system whereof the dental camera performs using optics without movable or controllable optical elements, it is provided for the optics to be plenoptic optics which are designed to determine a 4D light field when capturing the object and for the evaluation unit to be designed to calculate at least one representation of the captured object from the 4D light field.
    Type: Application
    Filed: April 3, 2014
    Publication date: October 9, 2014
    Applicant: Dürr Dental AG
    Inventors: Alexander Hack, Peter Lais, Raimund Maier, Axel Schramm
  • Publication number: 20140252252
    Abstract: A device configured to read an exposed imaging plate, comprises a light-source that generates read-out light. A deflection unit directs the read-out light in a scanning movement over the imaging plate. The deflection unit comprises a micromirror that deflects impinging read-out light towards the imaging plate. The micromirror swivels about a first swivel axis and about a different second swivel axis. The micromirror oscillates with a first frequency about the first swivel axis and simultaneously with a different second frequency about the second swivel axis. A detector unit detects fluorescent light which is emitted from the imaging plate at locations where the read-out light impinges.
    Type: Application
    Filed: May 21, 2014
    Publication date: September 11, 2014
    Applicant: Dürr Dental AG
    Inventors: Bernd Philipps, Michael Weber, Alexander Hack
  • Publication number: 20100238279
    Abstract: An attachment (40, 40a, 40b) for a diagnostic (10) comprises a coupling section (42) configured for the detachable connection to a head region (14) of a diagnostic camera (10), and a dimensionally stable spacer (44) that is connected to said section and has a free end section (46).
    Type: Application
    Filed: March 11, 2008
    Publication date: September 23, 2010
    Applicant: Durr Dental AG
    Inventors: Michael Thoms, Peter Lais
  • Publication number: 20100142777
    Abstract: The invention relates to a method and a device for evaluating fluorescence partial images representing the same object region, independently of stray light. Two partial images of the objects are produced in the red and in the green by a camera (10). A quotient image is produced in pixels from said two partial images, and the frequency of the occurrence of the image points having a pre-defined red/green ratio is determined for said quotient image. The mean values and the width are determined for the distribution curve obtained in this way. The two end variables of the distribution curve are used to calculate a threshold value. The quotient image is modified using said threshold value such that its contrast in relation to interesting details is increased.
    Type: Application
    Filed: February 28, 2008
    Publication date: June 10, 2010
    Applicant: DÛRR DENTAL AG
    Inventor: Michael Thoms
  • Publication number: 20100135717
    Abstract: The invention relates to a coupling unit (24) for transmitting high-frequency mechanical vibrations from a vibration generator (12) onto a tool (34). Said coupling unit comprises in input part (22) and an output part (30) that are interconnected via two identical vibration bars (26, 28), said bars being off-set from each other. The bars may have the shape of quadrants to provide the output movement in a direction that forms an angle of 90° with the direction of the input movement.
    Type: Application
    Filed: March 7, 2008
    Publication date: June 3, 2010
    Applicant: Durr Dental AG
    Inventor: Michael Thoms