EP 0253243 B1 19921111 - REFLECTOR FOR MOTOR VEHICLE HEADLAMPS WITH A MODIFIED MAIN BEAM
Title (en)
REFLECTOR FOR MOTOR VEHICLE HEADLAMPS WITH A MODIFIED MAIN BEAM
Publication
Application
Priority
- FR 8610339 A 19860716
- FR 8616319 A 19861124
- FR 8618141 A 19861224
Abstract (en)
[origin: US4794504A] This invention relates to a reflector for an automobile headlight comprising a reflecting quadric having substantially the surface of a paraboloid of revolution intersected by upper and lower truncation planes, an electric lamp filament being situated substantially at the focus of said quadric to provide full beam lighting by reflection on said quadric of the luminous beams emitted by said filament and traversed by an optical glass situated in front of said quadric. The reflector according to this invention is characterized by the fact that at least the lower truncation plane of the reflector is equipped, on its internal surface illuminated by the full beam filament of the electric lamp, with a plurality of reflecting spherical elements spaced in a concentric arrangement comparable with Fresnel echelons with respect to their common axis passing through the focus of the useful reflecting conic of the reflector, this focus being also their common center.
IPC 1-7
IPC 8 full level
F21S 8/10 (2006.01); F21V 7/00 (2006.01); F21V 13/00 (2006.01); F21V 14/02 (2006.01); F21V 14/04 (2006.01)
CPC (source: EP US)
F21S 41/338 (2017.12 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 0253243 A1 19880120; EP 0253243 B1 19921111; DE 3782562 D1 19921217; ES 2034996 T3 19930416; JP 2787444 B2 19980820; JP S6329401 A 19880208; US 4794504 A 19881227
DOCDB simple family (application)
EP 87109641 A 19870704; DE 3782562 T 19870704; ES 87109641 T 19870704; JP 17608687 A 19870716; US 6829187 A 19870701