Motor vehicle headlamp of the elliptical type capable of...

Illumination – Supported by vehicle structure – Light modifier

Reexamination Certificate

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C362S487000, C362S507000, C362S517000, C362S543000, C362S346000, C362S245000

Reexamination Certificate

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06863427

ABSTRACT:
A motor vehicle headlamp comprises a source, a mirror possessing first and second focal regions, and a converging lens. The source is located in the first focal region and the lens possesses a focus situated in the second focal region. The mirror and the lens have axes which are essentially coincident defining an optical axis of the headlamp, and the headlamp further includes a mask located in the region of the focus of the lens, in order to project a beam an upper cut-off of which is defined by said mask. Finally, the mirror concentrates the light, in the vertical direction, towards a vertical focusing baseline extending substantially horizontally and transversely to the optical axis and passing close to the focus of the lens. The mirror has at least one corrected vertical focusing area able to concentrate the light, in the vertical direction, towards vertical focusing locuses remote from said vertical focusing line in the axial direction, in order thus to increase the thickness of the light reflected by said area.

REFERENCES:
patent: 4517630 (1985-05-01), Dieffenbach et al.
patent: 5285362 (1994-02-01), Sakata
patent: 5636917 (1997-06-01), Furami et al.
patent: 6152589 (2000-11-01), Kawaguchi et al.
patent: 6155702 (2000-12-01), Blusseau et al.
patent: 6244731 (2001-06-01), Koiko et al.
patent: 0 254 746 (1988-02-01), None
patent: 2 552 528 (1985-03-01), None
patent: 2704044 (1994-10-01), None
Patent Abstracts of Japan, vol. 014, No. 006(M-916), Jan. 9, 1989 and JP 01 255103A (Koito Mfg Co Ltd) Oct. 12, 1989.
French Search Report No. 15 Sep. 1999.

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