PLANAR LIGHT SOURCE

PROBLEM TO BE SOLVED: To improve deterioration of quality of illumination due to luminance unevenness by curved bright line occurring on the upper face of a light guide plate in a surface light source which comprises the light guide plate formed with an anisotropic diffusion face on the upper side a...

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Bibliographische Detailangaben
1. Verfasser:	OKUWAKI DAISAKU
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BLASTING 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 FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEMICONDUCTOR DEVICES 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:	PROBLEM TO BE SOLVED: To improve deterioration of quality of illumination due to luminance unevenness by curved bright line occurring on the upper face of a light guide plate in a surface light source which comprises the light guide plate formed with an anisotropic diffusion face on the upper side and a light emitting source arranged on the side face of the light guide plate and emits surface illumination light by changing optical path of the emission light of the light source by the light guide plate. SOLUTION: The planar light source which comprises a light guide plate 11 having an anisotropic diffusion face 1h on the upper side and an emitting light source 2 arranged on the side face of the light guide plate and emits a diffusion light of anisotropy from the anisotropic diffusion face 1h by changing optical path of the light incident to the light guide plate from the light source by the light guide plate is provided with a mirror face portion 11k at a part of the upper side of the light guide plate 11. COPYRIGHT: (C)2008,JPO&INPIT