DISPLAY

A display comprises: a transmissive pixellated spatial light modulator ( 21 ); and a backlight ( 22 ). The backlight has a light-transmissive waveguide ( 26 ), with a first face of the waveguide being opposed to the spatial light modulator ( 21 ). The first face of the waveguide comprises a pluralit...

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Bibliographische Detailangaben
Hauptverfasser:	MATHER JONATHAN, LESAGE ETIENNE, MONTGOMERY DAVID J
Format:	Patent
Sprache:	eng
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 comprises: a transmissive pixellated spatial light modulator ( 21 ); and a backlight ( 22 ). The backlight has a light-transmissive waveguide ( 26 ), with a first face of the waveguide being opposed to the spatial light modulator ( 21 ). The first face of the waveguide comprises a plurality of regions that are not totally internally reflective for at least one polarisation of light propagating within the waveguide, and the remainder of the first face of the waveguide is totally internally reflective for light propagating within the waveguide. Light is extracted from the waveguide at the regions where first face of the waveguide is not totally internally reflective. The pitch of the regions where first face of the waveguide is not totally internally reflective is substantially an integer multiple of the pitch of the pixels of the spatial light modulator.