Patents by Inventor Thorsten Pfister

Thorsten Pfister has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210157007
    Abstract: A 3D time-of-flight camera for detecting three-dimensional image data from a detection zone is provided, the 3D time-of-flight camera comprising an illumination unit for transmitting transmission light that is modulated with a first modulation frequency; an image sensor having a plurality of reception elements for generating a respective reception signal; a plurality of demodulation units for demodulating the reception signals with the first modulation frequency in order to obtain sampled values; and a control and evaluation unit that is configured to control the illumination unit and/or the demodulation units for a number of measurement repetitions, in each case with a different phase shift between the first modulation frequency for the transmission light and the first modulation frequency for the demodulation, and that is configured to determine a distance value from the sampled values obtained per light reception element by the measurement repetitions.
    Type: Application
    Filed: November 25, 2020
    Publication date: May 27, 2021
    Inventors: Matthias HEINZ, Thorsten PFISTER, Josef BAAK
  • Publication number: 20180302611
    Abstract: A 3D time of flight camera is provided for detecting three-dimensional image data from a detection zone having a plurality of time of flight modules for detecting a partial field of view of the detection zone that each have an image sensor, a reception optics, and an interface for outputting raw image data and having at least one illumination module for transmitting a light signal into the detection zone. The 3D time of flight camera comprises a central control and evaluation unit that is connected to the time of flight modules and to the illumination modules to receive the raw image data and to generate the three-dimensional image data therefrom; a common connector for outputting three-dimensional image data and/or data derived therefrom; and a common housing in which the time of flight modules, the at least one illumination module, and the central control and evaluation unit are accommodated.
    Type: Application
    Filed: April 10, 2018
    Publication date: October 18, 2018
    Inventors: Josef BAAK, Thorsten PFISTER
  • Publication number: 20150042765
    Abstract: A 3D camera (10) having at least one image sensor (16, 16a-b) for detecting three-dimensional image data from a monitored zone (12, 34, 36) and having a mirror optics (38) disposed in front of the image sensor (16, 16a) for expanding the field of view (44) is provided. In this respect, the mirror optics (38) has a front mirror surface (40) and a rear mirror surface (42) and is arranged in the field of view (44) of the image sensor (16, 16a-b) such that the front mirror surface (40) generates a first partial field of view (34) over a first angular region and the rear mirror surface (42) generates a second partial field of view (36) over a second angular region, with the first angular region and the second angular region not overlapping and being separated from one another by non-monitored angular regions.
    Type: Application
    Filed: July 8, 2014
    Publication date: February 12, 2015
    Inventor: Thorsten PFISTER
  • Publication number: 20140340484
    Abstract: An illumination apparatus (16) for a 3D camera (10) for the generation of an illuminated region (22) having a homogeneous intensity distribution which is nevertheless an increased intensity distribution in the boundary regions of the illuminated region (22), wherein the illumination apparatus (16) comprises at least one light source (26) having a main radiation direction, as well as a lateral reflector (30) circumferentially arranged about the main radiation direction (28). In this connection an additional central reflector (32) is arranged in the main radiation direction (28) in order to redistribute central light portions of the light transmitted by the light source (26) outwardly by reflection at the central reflector (32) and at the lateral reflector (30).
    Type: Application
    Filed: May 16, 2014
    Publication date: November 20, 2014
    Applicant: SICK AG
    Inventors: Thorsten PFISTER, Nikolaus SCHILL
  • Publication number: 20130278939
    Abstract: The invention relates to an apparatus (1) for non-incremental position and form measurement of moving solid bodies (7), containing a laser Doppler distance sensor (10) in wavelength multiplexing technique with at least two different wavelengths (?1, ?2) and with a modular fibre optic measurement head in its sensor design, which contains two additional modules, which are connected to the measuring head by means of fibre optics a light source unit (2) and a detection unit (4). Two laser light bundles (37) of different wavelengths (?1, ?2) in the light source unit (2) are coupled into a glass fibre (24). The bichromatic scattered light in the detection unit (4) is split into the different wavelengths (?1, ?2) corresponding to the two measurement channels (41, 42) and subsequently are detected separately by means of two photo detectors (43, 44).
    Type: Application
    Filed: September 15, 2011
    Publication date: October 24, 2013
    Applicant: TECHNISCHE UNIVERSITÄT DRESDEN
    Inventors: Thorsten Pfister, Lars Buettner, Juergen Czarske, Florian Dreier