Layer-wise reproduction of three-dimensional objects by simultaneous super-position of encoded images
Monitor display unit
Holographic display panel for a vehicle windshield
Segmented 3-D hologram display
Multicolor holographic element and apparatus for head-up display applications
Polarized holographic heads up display
LED array polarized image source/0 degree hologram virtual image head up display Patent #: 5044709
ApplicationNo. 708403 filed on 05/30/1991
US Classes:340/980, Indicator visible in pilot's line of sight through windscreen340/461, With particular display means345/7, IMAGE SUPERPOSITION BY OPTICAL MEANS (E.G., HEADS-UP DISPLAY)359/24, Superimposed holograms only359/630Superimposing visual information on observer`s field of view (e.g., head-up arrangement, etc.)
ExaminersPrimary: Ng, Jin F.
Assistant: Swarthout, Brent A.
Attorney, Agent or Firm
International ClassG01C 021/00
AbstractA holographic head-up display having first and second superimposed reflection holograms supported by a vehicle windshield, and first and second playback sources respectively associated with the first and second reflection holograms and positioned such that reflection by the windshield of playback illumination from one playback source is toward the other playback source. In particular, the first and second playback sources are configured such that the centerlines of the playback beams provided by the first and second playback sources are coplanar in a common plane that is substantially normal to the holograms, with the centerlines intersecting generally in the hologram layers and having substantially the same angle of incidence on the hologram layers as measured relative to normal in the common plane.
Field of SearchIndicator visible in pilot's line of sight through windscreen
With particular display means
Window exhibited sign or shutter
Superimposing visual information on observer`s field of view (e.g., head-up arrangement, etc.)
Head up display
Holograph on curved substrate
Superimposed holograms only