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1. US20060061286 - LED headlight

Office
United States of America
Application Number 11053107
Application Date 08.02.2005
Publication Number 20060061286
Publication Date 23.03.2006
Grant Number 7261452
Grant Date 28.08.2007
Publication Kind B2
IPC
F21S 8/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
8Lighting devices intended for fixed installation
10specially adapted for vehicles
CPC
F21K 9/61
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
9Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
60Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
61using light guides
F21K 9/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
9Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
F21Y 2103/33
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
2103Elongate light sources, e.g. fluorescent tubes
30curved
33annular
F21Y 2115/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
2115Light-generating elements of semiconductor light sources
10Light-emitting diodes [LED]
Applicants Osram Sylvania Inc.
Inventors Coushaine Charles M.
Tessnow Thomas
Agents Meyer William E.
Title
(EN) LED headlight
Abstract
(EN)

A lamp (10) has a housing (12) with a base (14) with an internal circumferential wall (16) arranged about a longitudinal axis (18). A hollow body (20) projects from the housing (12) and is symmetrically arrayed about the longitudinal axis (18). A light guide (21) is positioned in the hollow body (20) and as a single output end (22) arrayed along the longitudinal axis (18) and has a plurality of radially extending arms (23), each of the arms having an input end (24). The light guide (21) is preferably constructed from a molded acrylic or a suitable glass having wave-guide characteristics.