Lighting assembly with controlled configurable light redirection

A lighting assembly has an edge-lit light guide having a light output surface through which light is extracted by light extracting optical elements. The extracted light has a maximum intensity at low light ray angles relative to the light output surface. A light redirecting member has an arrangement...

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Bibliographische Detailangaben
Hauptverfasser:	EZELL ROBERT M, HIDE FUMITOMO, MCCOLLUM TIMOTHY A
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING BLASTING CRYPTOGRAPHY DISPLAY DISPLAYING EDUCATION FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LABELS OR NAME-PLATES LIGHTING MECHANICAL ENGINEERING OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS SEALS SIGNS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	A lighting assembly has an edge-lit light guide having a light output surface through which light is extracted by light extracting optical elements. The extracted light has a maximum intensity at low light ray angles relative to the light output surface. A light redirecting member has an arrangement of light redirecting optical elements configured to redirect the extracted light incident thereon to provide a pattern of redirected light. A light focusing member has light focusing optical elements having an angular acceptance range. The redirected light has light ray angles within the angular acceptance range of the light focusing optical elements and is perceived as a pattern of light. The extracted light not redirected by the light redirecting member has light ray angles outside the angular acceptance range of the light focusing optical elements and is not perceived, or is perceived as background light.