CONCAVE WIDE EMITTING LENS FOR LED USEFUL FOR BACKLIGHTING

Lenses (26, 31) for LEDs are described that efficiently create a substantially uniform light emission across a surface of a backlight box (42). The backlight may illuminate an LCD (48). A wide-emitting lens refracts light emitted by an LED die to cause a peak intensity to occur within 35-65 degrees...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	SMITS, WILLEM H
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BASIC ELECTRIC ELEMENTS 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 SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEMICONDUCTOR DEVICES TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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