EP 1554521 B1 20060705 - LED PROJECTOR FOR ASYMMETRICAL ILLUMINATION
Title (en)
LED PROJECTOR FOR ASYMMETRICAL ILLUMINATION
Title (de)
LED-SCHEINWERFER ZUR ASYMMETRISCHEN AUSLEUCHTUNG
Title (fr)
PROJECTEUR A DEL POUR ECLAIRAGE ASYMETRIQUE
Publication
Application
Priority
- DE 10249819 A 20021024
- DE 10310263 A 20030310
- EP 0311516 W 20031017
Abstract (en)
[origin: WO2004038285A1] The invention relates to a novel projector which has an asymmetrical illumination characteristic, and a clear light-dark limit, and uses almost the entire radiation power outputted from the semiconductor light source. To this end, the projector consists of a field of individual semiconductor light sources which are provided with optical elements having a novel form. Said optical elements have as flat a form as possible, such that the light admission inlet of the optical element has an elongated, essentially rectangular form. Furthermore, the optical elements comprise a central region, perpendicular to the light admission surface (F), the projection of said central region into a two-dimensional plane corresponding to a cylindrical two-dimensional cartesian oval. According to the invention, in order to better use the light emitted from the semiconductor light source, the light emergence surface (G) of the optical element, in the form of a cartesian oval, is combined with a parabolic reflector (A, B).
IPC 8 full level
F21S 8/10 (2006.01); F21V 7/00 (2006.01); F21V 13/04 (2006.01)
CPC (source: EP US)
F21S 41/322 (2017.12 - EP US); F21V 7/0091 (2013.01 - EP US); F21V 13/04 (2013.01 - EP US); F21Y 2115/10 (2016.07 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 2004038285 A1 20040506; DE 50304161 D1 20060817; EP 1554521 A1 20050720; EP 1554521 B1 20060705; JP 2006504249 A 20060202; US 2006098447 A1 20060511
DOCDB simple family (application)
EP 0311516 W 20031017; DE 50304161 T 20031017; EP 03758006 A 20031017; JP 2005501521 A 20031017; US 53262105 A 20051128