INFORMATION DISPLAY SYSTEM HAVING TRANSPARENT HOLOGRAPHIC OPTICAL ELEMENT

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 s...

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Bibliographische Detailangaben
Hauptverfasser:	COX, ARTHUR, HABERMAN, DAVID, RALLISON, RICHARD, RHOADES, ROBERT, E, II
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADVERTISING AIRCRAFT AVIATION COSMONAUTICS CRYPTOGRAPHY DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING ORREPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DISPLAY DISPLAYING EDUCATION FREQUENCY-CHANGING GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLYADAPTED FOR USE IN CONNECTION WITH AIRCRAFT HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFTCOMPONENTS, NOT OTHERWISE PROVIDED FOR LABELS OR NAME-PLATES NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PERFORMING OPERATIONS PHYSICS SEALS SIGNS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TRANSPORTING
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Beschreibung
Zusammenfassung:	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.