Autostereoscopic display

A display includes a display panel and a backlighting system having a light source and waveguide. The waveguide includes diffusing portions of diffusing material. Light propagates through the waveguide by total internal reflection, but may be scattered by the diffusing portions. Scattered light leav...

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Bibliographische Detailangaben
Hauptverfasser:	JAK, MARTIN, J., J, IJZERMAN, WILLEM, L
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING 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 ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FREQUENCY-CHANGING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	A display includes a display panel and a backlighting system having a light source and waveguide. The waveguide includes diffusing portions of diffusing material. Light propagates through the waveguide by total internal reflection, but may be scattered by the diffusing portions. Scattered light leaving the waveguide through its exit face produces a pattern of light lines for use in illuminating a 3D autostereoscopic image displayed by the display panel. Intervening portions between the diffusing portions, are formed from a material that can be switched between a light transmissive state and a diffusive state. Optical properties of the intervening portions are controlled using electric fields. Such a display is switchable between a 2D image mode, in which the intervening portions are diffusive and the waveguide provides uniform illumination, and a 3D image mode, in which the intervening portions are transmissive and the waveguide provides illumination in the form of light lines.