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1. EP1853461 - LED HEADLAMP SYSTEM

Office European Patent Office
Application Number 06736739
Application Date 03.03.2006
Publication Number 1853461
Publication Date 14.11.2007
Publication Kind B1
IPC
B60Q 1/00
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
1Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
CPC
F21S 41/143
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
10characterised by the light source
14characterised by the type of light source
141Light emitting diodes [LED]
143the main emission direction of the LED being parallel to the optical axis of the illuminating device
F21S 41/153
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
10characterised by the light source
14characterised by the type of light source
141Light emitting diodes [LED]
151arranged in one or more lines
153arranged in a matrix
F21S 41/155
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
10characterised by the light source
14characterised by the type of light source
141Light emitting diodes [LED]
155Surface emitters, e.g. organic light emitting diodes [OLED]
F21S 41/24
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
20characterised by refractors, transparent cover plates, light guides or filters
24Light guides
F21S 41/663
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
60characterised by a variable light distribution
65by acting on light sources
663by switching light sources
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 TESSNOW THOMAS
JOHNSON RALPH
Designated States
Priority Data 2006007472 03.03.2006 US
65845905 04.03.2005 US
Title
(DE) LED-SCHEINWERFERSYSTEM
(EN) LED HEADLAMP SYSTEM
(FR) SYSTEME DE LAMPE DE PROJECTEUR A DIODES
Abstract
(EN)
A vehicle headlamp (20) includes a first planar row of low and high beam LED light sources (22); a first primary optical light guide receiving low and high beam light from the LEDs; a First secondary optical light guide receiving and focusing collimated low and high beam light from the first primary light guide as a combination of low and high beam hot spots; a second planar array of LED light sources having low and high beam LEDs (24); a second primary optical light guide receiving and collimating low and high beam light from the second LED light sources; a second secondary optical light guide receiving said collimated low and high beam light and spreading the light as a combination of low and high beam spread pattern; a housing (60) to mechanically support the LED arrays, the first primary optical light guide, the first secondary optical light guide, the second primary optical light guide and the second secondary optical light guide.

(FR)
La présente invention concerne une lampe de projecteur d'automobile. Cette lampe est constituée de plusieurs éléments. Une première matrice plane réunit des sources de lumière à diodes destinées aux faisceaux bas et haut. Un premier guide optique primaire reçoit depuis les diodes électroluminescentes la lumière destinée aux faisceaux bas et haut. Un premier guide optique secondaire reçoit et focalise la lumière collimatée des faisceaux haut et bas provenant du premier guide optique primaire sous forme d'une combinaison des points chauds des faisceaux bas et haut. Une deuxième matrice plane réunit des sources de lumière à diodes destinées aux faisceaux bas et haut. Un deuxième guide optique primaire reçoit et collimate la lumière destinée aux faisceaux bas et haut provenant des deuxièmes sources de lumière à diodes. Un deuxième guide optique secondaire reçoit ladite lumière collimatée des faisceaux bas et haut et répartit la lumière sous forme d'une combinaison de structures de répartition des faisceaux bas et haut. Un carter sert de support mécanique aux matrices de diodes électroluminescentes, à la première optique primaire, à la première optique secondaire, au deuxième guide optique primaire et à la deuxième optique secondaire.