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US 6,714,327 B1Granted
Use of a holographic video screen as a display surface in a vehicle
AssigneesDaimlerChrysler AG, Herr Heinrich A. Eberl
InventorsGuenter Abersfelder, Helmut Grantz, Thorsteinn Halldorsson, Horst Schmidt-Bischoffshausen, Stefan Uhl, Heinrich Alexander Eberl
Life of this patent
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Abstract
The use of a holographic video screen which appears black, gray or colored in ambient light as the display surface in a vehicle, wherein a driver can view the screen while driving without taking his eyes of the road. Additionally, the display system containing such a video screen permits the projection and viewing of multiple images on a single screen.
Claims22
A method of projecting holographic images, comprising:
- providing a holographic screen having a hologram recorded therein;
- projecting at least one light beam containing image information at at least one predetermined wavelength onto said holographic screen at a predetermined projection angle;
- and
- back scattering, via said holographic screen, a portion of said light beam containing said image information, to generate a virtual holographic image that is visible at a predetermined viewing angle;
- wherein
- said virtual holographic image appears in at least one viewing plane at a location which differs from a location of the holographic screen;
- and
- said hologram in said holographic screen comprises a holographic recording of a white projection surface.
5 more elements
A holographic display system, comprising:
- a holographic screen having a hologram therein;
- and
- a projection system for projecting at least one light beam containing image information at at least one predetermined wavelength onto said holographic screen at a predetermined projection angle, such that said holographic screen backscatters a portion of said light beam containing said image information to generate a virtual holographic image that is visible at a predetermined viewing angle;
- wherein
- said virtual holographic image appears in at least one viewing plane at a location which differs from a location of the holographic screen;
- and
- said hologram in said holographic screen comprises a holographic recording of a white projection surface.
4 more elements
Dependencies are inferred from the claim text.