LIGHT GUIDE ILLUMINATION DEVICE APPEARING UNIFORM IN BRIGHTNESS ALONG ITS LENGTH

An illumination device that is relatively bright and uniform in appearance includes a light guide, which has a light guide core having an optically smooth surface for propagating light therethrough. A light emitting region, which extends along a portion of the core, includes at least one light extra...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	LUNDIN, DAVID, J
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADVERTISING BLASTING CRYPTOGRAPHY DISPLAY DISPLAYING EDUCATION FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LABELS OR NAME-PLATES LIGHTING MECHANICAL ENGINEERING NON-PORTABLE LIGHTING DEVICES OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS SEALS SIGNS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR SYSTEMS THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	An illumination device that is relatively bright and uniform in appearance includes a light guide, which has a light guide core having an optically smooth surface for propagating light therethrough. A light emitting region, which extends along a portion of the core, includes at least one light extraction structure located along the optically smooth surface of the light guide core. The light extraction structure, which includes an optically reflective surface extending into the light guide core, is oriented to reflect light at an angle less than a critical angle necessary for light to propagate through the light guide core. A diffuse reflective material is disposed around at least a portion of the light guide. The diffuse reflective material directs at least a portion of the light reflected by the light extraction structure back through the light guide so that light is emitted through the light emitting region of the optically smooth surface.