Optical: systems and elements – Holographic system or element – Head up display
Patent
1991-09-27
1994-03-01
Lerner, Martin
Optical: systems and elements
Holographic system or element
Head up display
359 15, 359 25, G02B 532, G03H 130
Patent
active
052913163
ABSTRACT:
An information display system has a display screen which is substantially transparent to a selected band of wavelengths of light and can be mounted on a window. A projector projects an image of light of the wavelengths to which the display screen responds onto the screen to reflect or transmit the selected wavelengths of light from the screen. The screen is formed as a holographic optical element which reflects the light such that an observer is able to see the projected image from the display screen only if his eyes are within a predetermined area, while observers outside of the area see only a substantially transparent display screen on the window.
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Cox Arthur
Haberman David P.
Rallison Richard D.
Rhoades Robert E.
Astronautics Corporation of America
Lang Streich
Lerner Martin
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