LIGHTING FIXTURE

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of variably controlling beam angles of projected light to a lighting object, while keeping a projection light volume constant. SOLUTION: The lighting fixture is provided with a liquid crystal film element 13 in a front face of a light sourc...

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Bibliographic Details
Main Author KAWAKATSU AKIRA
Format Patent
LanguageEnglish
Published 07.04.2011
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
SYSTEMS THEREOF
VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a lighting fixture capable of variably controlling beam angles of projected light to a lighting object, while keeping a projection light volume constant. SOLUTION: The lighting fixture is provided with a liquid crystal film element 13 in a front face of a light source equipped with an LED light-emitting element and accommodated in a fixture body 11. The liquid crystal film element 13 is formed by sandwiching a polymer layer including liquid crystal between two sheets of translucent films, inner faces of which are coated with transparent conductive films. By an applied voltage between the two sheets of the transparent conductive films of the translucent films, diffusion of light is changed with transmittance of the light kept almost constant, and the applied voltage between the two translucent films of the transparent conductive films of the crystal film element is controlled by a switch 14. COPYRIGHT: (C)2011,JPO&INPIT
Bibliography:Application Number: JP20090221005