EP 1170547 B1 20071128 - Elliptical-type headlight for road lighting with improved low photometry
Title (en)
Elliptical-type headlight for road lighting with improved low photometry
Title (de)
Elliptischer Scheinwerfer für eine Strassenbeleuchtung mit verbesserter Niedrig-Photometrie
Title (fr)
Projecteur du genre elliptique notamment pour éclairage de route à photométrie basse améliorée
Publication
Application
Priority
FR 0008903 A 20000707
Abstract (en)
[origin: US2002003709A1] An elliptical projector for a motor vehicle comprises an ellipsoidal reflector co-operating with a light source mounted in a first focal region of the reflector, which forms, in a second focal region, a concentrated patch of light after reflection. The headlight also has a convergent lens which is focused in the vicinity of the second focal region so as to project this light patch on the road. The headlight further includes a mask in the path of the light between the light source and the lens. The mask is adapted to occult part of the light flowing between the reflector and the lens, and is disposed entirely above the second focal region of the reflector; the mask defines at least two occulting regions which are spaced apart in the direction of the optical axis; and each occulting region is arranged to mask a specific portion of the light. The invention is applicable, in particular, to the production of a main beam with a blurred, achromatic, cut-off at the bottom; this beam may be autonomous, or it may be complementary to a dipped or passing beam.
IPC 8 full level
F21S 8/12 (2006.01); F21V 7/08 (2006.01); F21V 11/16 (2006.01); F21V 13/00 (2006.01); F21W 101/10 (2006.01); F21Y 101/00 (2016.01)
CPC (source: EP US)
F21S 41/43 (2017.12 - EP US)
Designated contracting state (EPC)
DE ES GB IT
DOCDB simple family (publication)
EP 1170547 A1 20020109; EP 1170547 B1 20071128; EP 1170547 B2 20111214; DE 60131600 D1 20080110; DE 60131600 T2 20081023; DE 60131600 T3 20120419; ES 2298205 T3 20080516; ES 2298205 T5 20120302; FR 2811408 A1 20020111; FR 2811408 B1 20021018; JP 2002063805 A 20020228; JP 4587608 B2 20101124; US 2002003709 A1 20020110; US 6561688 B2 20030513
DOCDB simple family (application)
EP 01401648 A 20010621; DE 60131600 T 20010621; ES 01401648 T 20010621; FR 0008903 A 20000707; JP 2001207395 A 20010709; US 89933701 A 20010705