Patents by Inventor Stephan Reichelt

Stephan Reichelt 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).

  • Patent number: 11002982
    Abstract: The invention relates to a light modulation device for a display for representing two- and/or three-dimensional image content or image sequences. The light modulation device comprises a light modulator and a controller. The phase and/or the amplitude of a light wave field, which is substantially collimated, can be varied by means of the light modulator depending on the location of the light modulator. The light modulator can be actuated by means of the control device. According to the invention, in the direction of propagation of the light wave field, at least one diffracting unit is arranged downstream of the light modulator. The diffracting unit has a variable diffracting structure. By means of the diffracting structure, the light wave field varied by the light modulator can be diffracted in a variable and predeterminable manner. Further, the present invention relates to a display and a method for producing a light modulation device.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: May 11, 2021
    Assignee: SEEREAL TECHNOLOGIES S. A.
    Inventors: Bo Kroll, Norbert Leister, Gerald Futterer, Robert Missbach, Stephan Reichelt
  • Publication number: 20210109404
    Abstract: A device for combining light beams which interact with adjacently arranged pixels of a light modulator, having a beam splitting component, a beam combining component, and a beam superposition component. The beam splitting component is configured such that incident light beams are split into a first subbeam and a second subbeam so that the first subbeam propagates toward a first pixel of the light modulator and the second subbeam propagates toward a second pixel of the light modulator. The beam combining component is configured and arranged so that the first subbeam and the second subbeam are combined after interaction with pixels of the light modulator. The beam splitting component and the beam combining component are configured and arranged in such a way that a sum of optical path lengths of the first subbeam and the second subbeam is respectively constant for different angles of incidence.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Inventors: Norbert LEISTER, Stephan REICHELT
  • Patent number: 10871674
    Abstract: The present invention relates to a device for combining light beams which interact with adjacently arranged pixels of a light modulator. The present invention furthermore relates to a device for beam combination and to a spatial light modulation device for complex-valued modulation. The invention relates to a device for beam combination, and to an optical arrangement of polarization-sensitive component parts which allows complex-valued modulation of a light field by means of a phase-modulating light modulator and a beam combiner, which is insensitive to changes in the incidence direction of the illumination wave. This document furthermore also relates to various arrangements of reflectively operating light modulators.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: December 22, 2020
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventors: Norbert Leister, Stephan Reichelt
  • Publication number: 20200379272
    Abstract: The invention relates to a light modulation device for a display for representing two- and/or three-dimensional image content or image sequences. The light modulation device comprises a light modulator and a controller. The phase and/or the amplitude of a light wave field, which is substantially collimated, can be varied by means of the light modulator depending on the location of the light modulator. The light modulator can be actuated by means of the control device. According to the invention, in the direction of propagation of the light wave field, at least one diffracting unit is arranged downstream of the light modulator. The diffracting unit has a variable diffracting structure. By means of the diffracting structure, the light wave field varied by the light modulator can be diffracted in a variable and predeterminable manner. Further, the present invention relates to a display and a method for producing a light modulation device.
    Type: Application
    Filed: June 15, 2020
    Publication date: December 3, 2020
    Inventors: Bo KROLL, Norbert LEISTER, Gerald FUTTERER, Robert MISSBACH, Stephan REICHELT
  • Patent number: 10684489
    Abstract: The invention relates to a light modulation device for a display for representing two- and/or three-dimensional image content or image sequences. The light modulation device comprises a light modulator and a controller. The phase and/or the amplitude of a light wave field, which is substantially collimated, can be varied by means of the light modulator depending on the location of the light modulator. The light modulator can be actuated by means of the control device. According to the invention, in the direction of propagation of the light wave field, at least one diffracting unit is arranged downstream of the light modulator. The diffracting unit has a variable diffracting structure. By means of the diffracting structure, the light wave field varied by the light modulator can be diffracted in a variable and predeterminable manner. Further, the present invention relates to a display and a method for producing a light modulation device.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: June 16, 2020
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventors: Bo Kroll, Norbert Leister, Gerald Futterer, Robert Missbach, Stephan Reichelt
  • Publication number: 20200033672
    Abstract: The present invention relates to a device for combining light beams which interact with adjacently arranged pixels of a light modulator. The present invention furthermore relates to a device for beam combination and to a spatial light modulation device for complex-valued modulation. The invention relates to a device for beam combination, and to an optical arrangement of polarization-sensitive component parts which allows complex-valued modulation of a light field by means of a phase-modulating light modulator and a beam combiner, which is insensitive to changes in the incidence direction of the illumination wave. This document furthermore also relates to various arrangements of reflectively operating light modulators.
    Type: Application
    Filed: September 29, 2017
    Publication date: January 30, 2020
    Inventors: Norbert LEISTER, Stephan REICHELT
  • Patent number: 10509364
    Abstract: A light modulator, for a display for the presentation of two- and/or three-dimensional image contents or image sequences, includes two opposing substrates and electrodes. At least one liquid crystal layer is provided between the two substrates. An alignment means is provided on the substrate which faces the liquid crystal layer to set a predeterminable initial alignment of the liquid crystals. The orientation of the liquid crystals can be controlled in a given range through an electric field generated by the electrodes. The alignment means is controllable and can be controlled to modify the initial alignment of the liquid crystals. The alignment can be controlled such the orientation of the liquid crystals can be oriented outside the given range or so that the initial alignment of the liquid crystals can be set specifically for certain positions.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: December 17, 2019
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventors: Bo Kroll, Norbert Leister, Stephan Reichelt, Gerald Futterer
  • Publication number: 20190267504
    Abstract: A method for producing a metal foil composed of an aluminium-magnesium alloy which includes scandium and zirconium, and also the metal foil produced accordingly are described. With such a foil it is possible, for example, to produce connectors for solar cells, which may be employed in particular in aerospace, for example in satellites.
    Type: Application
    Filed: February 22, 2019
    Publication date: August 29, 2019
    Applicant: Airbus Defence and Space GmbH
    Inventors: Frank Geiger, Stephan Reichelt, Blanka Lenczowski, Claus Zimmermann, Christel Noemayr, Wiebke Steins
  • Patent number: 10168540
    Abstract: For comfortable viewing of a 3-D scene at various viewing angles, a display having a large tracking range for a variable viewer distance is required. A controllable light-influencing element deflects light in coarse steps in a viewer range. Within said steps, the light is deflected by a further controllable light-influencing element continuously or with fine gradation. The light modulation device is suitable in holographic or autostereoscopic displays for guiding the visibility ranges of the image information to be displayed so as to follow the eyes of the viewers.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: January 1, 2019
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventors: Bo Kroll, Gerald Futterer, Norbert Leister, Stephan Reichelt, Ralf Haussler
  • Patent number: 10102814
    Abstract: A controllable device for phase modulation of coherent light comprises a modulator matrix having a plurality of liquid crystal modulator cells each being adapted to modulate a phase value of light passing through a liquid crystal modulator cell depending on a voltage, which is applied to the liquid crystal modulator cell; at least one polarity area of said modulator matrix including at least one liquid crystal modulator cell; at least one storage unit for storing at least one pair of voltage values of which one has a positive and the other has a negative polarity for the liquid crystal modulator cells, whereby the pair of voltage values corresponds to a predetermined phase value; and a control unit for selectively applying one pair of voltage values to one liquid crystal modulator cell.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: October 16, 2018
    Assignees: SEEREAL TECHNOLOGIES S.A., SHARP CORPORATION
    Inventors: Robert Missbach, Stephan Reichelt, Norbert Leister, Ralf Haussler, Naru Usukura, Hiromi Katoh, Yuichi Kanbayashi
  • Publication number: 20170357098
    Abstract: For comfortable viewing of a 3-D scene at various viewing angles, a display having a large tracking range for a variable viewer distance is required. A controllable light-influencing element deflects light in coarse steps in a viewer range. Within said steps, the light is deflected by a further controllable light-influencing element continuously or with fine gradation. The light modulation device is suitable in holographic or autostereoscopic displays for guiding the visibility ranges of the image information to be displayed so as to follow the eyes of the viewers.
    Type: Application
    Filed: August 28, 2017
    Publication date: December 14, 2017
    Inventors: Bo KROLL, Gerald FUTTERER, Norbert LEISTER, Stephan REICHELT, Ralf HAUSSLER
  • Patent number: 9746684
    Abstract: For comfortable viewing of a 3-D scene at various viewing angles, a display having a large tracking range for a variable viewer distance is required. A controllable light-influencing element deflects light in coarse steps in a viewer range. Within said steps, the light is deflected by a further controllable light-influencing element continuously or with fine gradation. The light modulation device is suitable in holographic or autostereoscopic displays for guiding the visibility ranges of the image information to be displayed so as to follow the eyes of the viewers.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: August 29, 2017
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventors: Bo Kroll, Gerald Futterer, Norbert Leister, Stephan Reichelt, Ralf Haussler
  • Publication number: 20160202593
    Abstract: For comfortable viewing of a 3-D scene at various viewing angles, a display having a large tracking range for a variable viewer distance is required. A controllable light-influencing element deflects light in coarse steps in a viewer range. Within said steps, the light is deflected by a further controllable light-influencing element continuously or with fine gradation. The light modulation device is suitable in holographic or autostereoscopic displays for guiding the visibility ranges of the image information to be displayed so as to follow the eyes of the viewers.
    Type: Application
    Filed: March 21, 2016
    Publication date: July 14, 2016
    Inventors: Bo KROLL, Gerald FUTTERER, Norbert LEISTER, Stephan REICHELT, Ralf HAUSSLER
  • Patent number: 9291828
    Abstract: For comfortable viewing of a 3-D scene at various viewing angles, a display having a large tracking range for a variable viewer distance is required. A controllable light-influencing element deflects light in coarse steps in a viewer range. Within said steps, the light is deflected by a further controllable light-influencing element continuously or with fine gradation. The light modulation device is suitable in holographic or autostereoscopic displays for guiding the visibility ranges of the image information to be displayed so as to follow the eyes of the viewers.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: March 22, 2016
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventors: Bo Kroll, Gerald Futterer, Norbert Leister, Stephan Reichelt, Ralf Haussler
  • Publication number: 20150279293
    Abstract: A controllable device for phase modulation of coherent light comprises a modulator matrix having a plurality of liquid crystal modulator cells each being adapted to modulate a phase value of light passing through a liquid crystal modulator cell depending on a voltage, which is applied to the liquid crystal modulator cell; at least one polarity area of said modulator matrix including at least one liquid crystal modulator cell; at least one storage unit for storing at least one pair of voltage values of which one has a positive and the other has a negative polarity for the liquid crystal modulator cells, whereby the pair of voltage values corresponds to a predetermined phase value; and a control unit for selectively applying one pair of voltage values to one liquid crystal modulator cell.
    Type: Application
    Filed: October 1, 2012
    Publication date: October 1, 2015
    Applicants: SEEREAL TECHNOLOGIES S.A., SHARP CORPORATION
    Inventors: Robert Missbach, Stephan Reichelt, Norbert Leister, Ralf Haussler, Naru Usukura, Hiromi Katoh, Yuichi Kanbayashi
  • Patent number: 9041989
    Abstract: The invention relates to apodization in a holographic direct view display. Known apodization functions are utilized/modified for an apodization mask such that the functions reduce the intensities of selected higher magnitudes of diffractions. The holographic direct view display comprises a controllable light modulator having modulator cells and modulating impinging coherent light into a phase and/or amplitude, and an array of apodization masks. The apodization masks have the same apodization function for a predetermined group of modulator cells, by means of which function a complex amplitude transparency can be set for the modulator cells. This transparency corresponds to an individually predefined course of intensity in a far field of the light modulator, wherein the predefined course of intensity includes a reducing of the light intensity of higher magnitudes of diffractions, and/or of the interfering light emitted by the light modulator.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: May 26, 2015
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventors: Norbert Leister, Stephan Reichelt
  • Publication number: 20140198361
    Abstract: The invention relates to apodization in a holographic direct view display. Known apodization functions are utilized/modified for an apodization mask such that the functions reduce the intensities of selected higher magnitudes of diffractions. The holographic direct view display comprises a controllable light modulator having modulator cells and modulating impinging coherent light into a phase and/or amplitude, and an array of apodization masks. The apodization masks have the same apodization function for a predetermined group of modulator cells, by means of which function a complex amplitude transparency can be set for the modulator cells. This transparency corresponds to an individually predefined course of intensity in a far field of the light modulator, wherein the predefined course of intensity includes a reducing of the light intensity of higher magnitudes of diffractions, and/or of the interfering light emitted by the light modulator.
    Type: Application
    Filed: March 14, 2014
    Publication date: July 17, 2014
    Applicant: SEEREAL TECHNOLOGIES S.A.
    Inventors: Norbert LEISTER, Stephan REICHELT
  • Patent number: 8705156
    Abstract: The invention relates to apodization in a holographic direct view display. Known apodization functions are utilized/modified for an apodization mask such that the functions reduce the intensities of selected higher magnitudes of diffractions. The holographic direct view display comprises a controllable light modulator having modulator cells and modulating impinging coherent light into a phase and/or amplitude, and an array of apodization masks. The apodization masks have the same apodization function for a predetermined group of modulator cells, by means of which function a complex amplitude transparency can be set for the modulator cells. This transparency corresponds to an individually predefined course of intensity in a far field of the light modulator, wherein the predefined course of intensity includes a reducing of the light intensity of higher magnitudes of diffractions, and/or of the interfering light emitted by the light modulator.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: April 22, 2014
    Assignee: Seereal Technologies S.A.
    Inventors: Norbert Leister, Stephan Reichelt
  • Publication number: 20140055692
    Abstract: The invention relates to a light modulation device for a display for representing two- and/or three-dimensional image content or image sequences. The light modulation device comprises a light modulator and a controller. The phase and/or the amplitude of a light wave field, which is substantially collimated, can be varied by means of the light modulator depending on the location of the light modulator. The light modulator can be actuated by means of the control device. According to the invention, in the direction of propagation of the light wave field, at least one diffracting unit is arranged downstream of the light modulator. The diffracting unit has a variable diffracting structure. By means of the diffracting structure, the light wave field varied by the light modulator can be diffracted in a variable and predeterminable manner. Further, the present invention relates to a display and a method for producing a light modulation device.
    Type: Application
    Filed: June 18, 2010
    Publication date: February 27, 2014
    Applicant: SeeReal Technologies S.A.
    Inventors: Bo Kroll, Norbert Leister, Gerald Futterer, Robert Missbach, Stephan Reichelt
  • Publication number: 20140016051
    Abstract: For comfortable viewing of a 3-D scene at various viewing angles, a display having a large tracking range for a variable viewer distance is required. A controllable light-influencing element deflects light in coarse steps in a viewer range. Within said steps, the light is deflected by a further controllable light-influencing element continuously or with fine gradation. The light modulation device is suitable in holographic or autostereoscopic displays for guiding the visibility ranges of the image information to be displayed so as to follow the eyes of the viewers.
    Type: Application
    Filed: December 21, 2011
    Publication date: January 16, 2014
    Applicant: SEEREAL TECHNOLOGIES S.A.
    Inventors: Bo Kroll, Gerald Futterer, Norbert Leister, Stephan Reichelt