DIRECTIVE LIGHT GUIDE PLATE AND PRODUCTION METHOD OF DIE FOR LIGHT GUIDE PLATE

PROBLEM TO BE SOLVED: To provide a production method which can form a unique emboss pattern of a directive light guide plate in a mold cavity of a die for forming a light guide plate simply with good reproducibility. SOLUTION: In the directive light guide plate (1) with many embosses (9) whose surfa...

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Bibliographische Detailangaben
Hauptverfasser:	MIFUJI NOZOMI, TAGUCHI HIROZUMI, NAKABASHI SUMIO
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 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 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 PERFORMING OPERATIONS PHYSICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a production method which can form a unique emboss pattern of a directive light guide plate in a mold cavity of a die for forming a light guide plate simply with good reproducibility. SOLUTION: In the directive light guide plate (1) with many embosses (9) whose surfaces (9a) are constituted in a flat curved surface at least on any surface of a light emitting surface (1d) of a wedge type light guide plate main body (11) or a non-light emitting surface (1b) opposed to the light emitting surface (1d), the density per unit area of the emboss (9) becomes high-density gradually from an entering light side end surface (1a) side toward a reflecting side end surface (1c) and the density is gradually decreased from the position (M) reaching the highest density.