Patents Assigned to HSM Holographic Systems Muenchen GmbH
  • Screen for front laser projection
    Patent number: 6392766
    Abstract: In a holographic screen for laser front projection, of at least one or more laser wavelengths that selectively back-scatter the incident spectrally narrow-band laser radiation in a predetermined solid angle and simultaneously highly absorbs the disturbing spectrally broad-band ambient light, it is proposed that it have at least one holographic volume grating that is optically coupled to a light absorber.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: May 21, 2002
    Assignees: DaimlerChrysler AG, HSM Holographic Systems Muenchen GmbH
    Inventors: Klaus Gnaedig, Guenther Dausmann, Thorstein Halldorsson
  • Screen for laser rear projection
    Patent number: 6313931
    Abstract: The invention concerns a holographic screen for the laser back-projection of at least one or a plurality of laser wavelengths, said holographic screen selectively and diffusely front-scattering the incident narrow-band laser radiation in a predetermined solid angle and simultaneously allowing through the disruptive spectrally broad-band ambient light from the observation area. To that end, the holographic screen comprises at least one holographic transmission grid which is coupled to a light absorber.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: November 6, 2001
    Assignees: DaimlerChrysler AG, HSM Holographic Systems Muenchen GmbH
    Inventors: Klaus Gnaedig, Guenther Dausmann, Thorstein Halldorsson