SURFACE LIGHT-EMITTING DEVICE

PROBLEM TO BE SOLVED: To reduce a difference between a luminescent color of a light source and a luminescent color of a light guide plate as much as possible in a surface light-emitting device.SOLUTION: A surface light-emitting device includes: a light guide plate 1 having glass plates 12 respective...

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Bibliographic Details
Main Authors HASEGAWA YOSHINORI, NODA TAKAYUKI, OKI KOJI
Format Patent
LanguageEnglish
Published 08.09.2014
Subjects
BLASTING
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-PORTABLE LIGHTING DEVICES
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
SYSTEMS THEREOF
VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To reduce a difference between a luminescent color of a light source and a luminescent color of a light guide plate as much as possible in a surface light-emitting device.SOLUTION: A surface light-emitting device includes: a light guide plate 1 having glass plates 12 respectively closely secured via an adhesive layer 14 to both surfaces of a resin plate 11; and a light source 2 that allows the light from one end surface of the light guide plate 1 to enter the inside of the light guide plate 1. As the light source 2, there is used one having a blue center wavelength in a wavelength range of not less than 460 nm nor more than 490 nm, or one having a blue center wavelength in a wavelength range of not less than 440 nm nor less than 460 nm and having a color temperature of 4000 K or less.
Bibliography:Application Number: JP20130034367