LIGHT SOURCE DEVICE

PROBLEM TO BE SOLVED: To provide a light source device whose thickness can be reduced. SOLUTION: The light radiated from light emitting diode elements 39 to 42 are reflected depending on the difference of refractive index between an air layer formed in a concave 33 and a light diffusing plane 33A, s...

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Hauptverfasser: HAYASHI KINJI, YASUKAWA TAKEMASA, WADA SATOSHI
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creator HAYASHI KINJI
YASUKAWA TAKEMASA
WADA SATOSHI
description PROBLEM TO BE SOLVED: To provide a light source device whose thickness can be reduced. SOLUTION: The light radiated from light emitting diode elements 39 to 42 are reflected depending on the difference of refractive index between an air layer formed in a concave 33 and a light diffusing plane 33A, so that the light reflected form the plurality of light emitting diodes 31 are efficiently mixed in a light guide member 32, and a plane light source is given in a fictive plane parallel to a light out going plane. The diffusion region of the radiated light is not required to be secured in the whole direction of the thickness of the light guide member 32 as convention, so that the thickness of the light guide 32 can be defined thin, and the thickness of the total device can be made small. COPYRIGHT: (C)2007,JPO&INPIT
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subjects 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
NON-PORTABLE LIGHTING DEVICES
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
SEMICONDUCTOR DEVICES
STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR
SYSTEMS THEREOF
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS
WEAPONS
title LIGHT SOURCE DEVICE
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