Low cost backlight for NVIS compatible operation

A night vision compatible backlight is disclosed. The backlight may include a base layer and a spacer layer. The spacer layer defines a plurality of arrays of openings, each includes a first set of openings and a second set of openings alternately distributed along the array. The backlight also incl...

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Bibliographische Detailangaben
Hauptverfasser:	DAVIS JOSHUA V, KRAMER STEVEN W
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING BLASTING CRYPTOGRAPHY 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 FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LABELS OR NAME-PLATES LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS SIGNS 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 night vision compatible backlight is disclosed. The backlight may include a base layer and a spacer layer. The spacer layer defines a plurality of arrays of openings, each includes a first set of openings and a second set of openings alternately distributed along the array. The backlight also includes a first set of LED modules electronically connected to the base layer through the first set of openings and a second set of LED modules electronically connected to the base layer through the second set of openings. The backlight further includes a filtering layer for providing infrared filtering for the second set of LED modules. The first set of LED modules and the second set of LED modules may be selectively energized to provide: a first mode where the first set of LED modules are energized, and a second mode where only the second set of LED modules are energized.