Patents by Inventor Remus Lucian Albu

Remus Lucian Albu 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).

  • Method and system for electroholographic display with zeroth-order diffraction suppression
    Patent number: 8186833
    Abstract: An electroholographic display system (300, 700) includes: a coherent light source (330, 730); a spatial light modulator (SLM) (320, 720) that modulates a coherent collimated light beam; and a processor and driver unit (310, 710) that generates hologram data and applies appropriate voltages to the pixels of the SLM to modulate the coherent collimated light beam with the hologram data and to suppress a zeroth order component of the modulated light beam at an image plane where the holographic image is reproduced. The processor and driver unit suppresses the zeroth order component of the modulated light beam by selecting the voltages to apply to the pixels of the SLM to cause a first group of pixels to provide a phase shift of 180 degrees to first portions of the collimated light beam with respect to portions of the collimated light beam modulated by a second group of pixels.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: May 29, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Alok Govil, Remus Lucian Albu
  • METHOD AND SYSTEM FOR ELECTROHOLOGRAPHIC DISPLAY WITH ZEROTH-ORDER DIFFRACTION SUPPRESSION
    Publication number: 20100238528
    Abstract: An electroholographic display system (300, 700) includes: a coherent light source (330, 730); a spatial light modulator (SLM) (320, 720) that modulates a coherent collimated light beam; and a processor and driver unit (310, 710) that generates hologram data and applies appropriate voltages to the pixels of the SLM to modulate the coherent collimated light beam with the hologram data and to suppress a zeroth order component of the modulated light beam at an image plane where the holographic image is reproduced. The processor and driver unit suppresses the zeroth order component of the modulated light beam by selecting the voltages to apply to the pixels of the SLM to cause a first group of pixels to provide a phase shift of 180 degrees to first portions of the collimated light beam with respect to portions of the collimated light beam modulated by a second group of pixels.
    Type: Application
    Filed: May 29, 2007
    Publication date: September 23, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Alok Govil, Remus Lucian Albu