EP 0125353 B1 19891011 - AUTOMOTIVE HEADLIGHT HAVING OPTICS IN THE REFLECTOR
Title (en)
AUTOMOTIVE HEADLIGHT HAVING OPTICS IN THE REFLECTOR
Publication
Application
Priority
EP 83302633 A 19830510
Abstract (en)
[origin: EP0125353A1] The invention concerns the reflector of an automotive headlight which has a clear unfluted front cover (12) and a reflector (13) which directs light from a source (11) through the front cover in a desired pattern. The reflective surface is smooth and continuous formed of two edge ellipsoids (15, 16) and a center ellipsoid (14) joined in smooth continuous junctions. The center ellipsoid is modified to include a smooth vertical bump (21) and the ellipsoids are tilted off the axis of the headlight. The headlight is formed by a digital computer aided process which includes tracing the paths of a plurality of light rays emanating from a digitally modeled light source, intersecting a reflector modeled by digital shape functions and projected onto a sphere surrounding the reflector. The light intensity across a path of the sphere is compared with the prescribed automotive headlight specifications. The parameters of the shape functions are changed and the process is performed iteratively to produce a light intensity best matching the specifications.
IPC 1-7
IPC 8 full level
F21V 7/00 (2006.01)
CPC (source: EP)
F21S 41/335 (2017.12)
Citation (examination)
EP 0075786 A1 19830406 - BOSCH GMBH ROBERT [DE]
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0125353 A1 19841121; EP 0125353 B1 19891011; DE 3380703 D1 19891116
DOCDB simple family (application)
EP 83302633 A 19830510; DE 3380703 T 19830510