SURFACE LIGHT SOURCE DEVICE

A surface light source device is provided to suppress brightness unevenness. The surface light source device include first and second light guide plates, first and second reflective sheets, first andsecond light sources and a light source driving circuit. The first light guide plate includes a first...

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Bibliographische Detailangaben
Hauptverfasser:	OKI YOJI, SAWADA MASATSUNA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LIGHTING MECHANICAL ENGINEERING NON-PORTABLE LIGHTING DEVICES 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:	A surface light source device is provided to suppress brightness unevenness. The surface light source device include first and second light guide plates, first and second reflective sheets, first andsecond light sources and a light source driving circuit. The first light guide plate includes a first optical control unit for deflecting light incident from one side surface in a specific direction and emitting the light, and a first light emitting part disposed more away from the first light source than the first optical control part. The second light guide plate includes a second light transmitting part for propagating light incident from one side surface, and a second optical control unit for deflecting light in a specific direction and emitting light and disposed more away from the secondlight source than the second light guiding unit. The first light guide plate and the second light guide plate are arranged such that the first reflective sheet overlaps with the first optical controlunit in the lamination dir