EP 0766037 A1 19970402 - Lighting device that can be constructed with reduced thickness, especially a headlamp or other external vehicle lamp
Title (en)
Lighting device that can be constructed with reduced thickness, especially a headlamp or other external vehicle lamp
Title (de)
Beleuchtungsvorrichtung, die mit einer reduzierten Dicke herstellbar ist, insbesondere Scheinwerfer oder andere äussere Fahrzeuglampe
Title (fr)
Appareil d'éclairage qui peut-être construit avec une épaisseur réduite, notamment projecteur ou autre lampe extérieure pour véhicule
Publication
Application
Priority
IT TO950771 A 19950927
Abstract (en)
Lighting device (10), usable as a headlamp or other external vehicle lamp, whose thickness (space requirement in terms of depth) is much less than its other dimensions, comprising at least one light source (1), a modifier/extractor (13) and at least one reflector (3) for collimating a beam of light rays from the source towards the modifier/extractor (13), which latter is designed to control the divergence and intensity distribution of the beam and deflect it through a lens (6) arranged approximately parallel to the direction of propagation of the beam, in front of the modifier/extractor; the latter is a second reflector (13) with, directly facing the lens (6), an upper surface arranged obliquely to the direction (X) of propagation of the beam in such a way that the second reflector (13) is approximately wedge-shaped in cross section in the direction (X) of propagation of the beam, which upper surface is made up of a plurality of mutually adjacent reliefs (15), each of which has, in the direction of propagation of the beam, a sawtooth profile; the peaks (20) of the reliefs (15) all lying on a continuous curve (21) of defined shape, and for each relief (15) the oblique side (16) nearest the light source (12) lies at an individually defined angle relative to the direction (X) of propagation of the beam. <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP US)
F21S 41/337 (2018.01 - EP); F21S 41/365 (2018.01 - EP US); F21S 43/26 (2018.01 - EP); F21S 43/30 (2018.01 - EP); F21V 5/002 (2013.01 - EP US)
Citation (search report)
- [XY] EP 0364228 A2 19900418 - MINNESOTA MINING & MFG [US]
- [X] GB 1021159 A 19660302 - LUCAS INDUSTRIES LTD
- [Y] US 4713738 A 19871215 - DAVIS CHARLES S [US]
- [Y] DE 4421306 A1 19950105 - KOITO MFG CO LTD [JP]
Designated contracting state (EPC)
DE ES FR GB SE
DOCDB simple family (publication)
EP 0766037 A1 19970402; EP 0766037 B1 20030205; DE 69626078 D1 20030313; DE 69626078 T2 20031113; ES 2189846 T3 20030716; IT 1281366 B1 19980218; IT TO950771 A0 19950927; IT TO950771 A1 19970327
DOCDB simple family (application)
EP 96115489 A 19960926; DE 69626078 T 19960926; ES 96115489 T 19960926; IT TO950771 A 19950927