| 摘要 |
A motor vehicle headlight of the type comprising a lamp having a filament (100), a reflector (200) defining an optical axis (Ox), and a closure glass (300), the filament emitting light freely in all radial directions thereabout and the reflector having a smooth and essentially continuous reflecting surface which reflects the rays emitted by the filament in such a manner as to cause the majority of them to be situated beneath a cut-off (hHc; hh) constituted by two half-planes of given height and slope. According to the invention the reflecting surface comprises a central zone (201i-206a; 210) which reflects rays from the filament so that they propagate in planes which are essentially vertical, two intermediate zones (201m, 203m, 205m; 202m, 204m, 206m; 220, 230) situated on either side of the central zone and connected thereto with continuity, which intermediate zones reflect the light rays from the filament by imparting a substantial deflection thereto in planes essentially parallel to the cut-off half-plane with the rays participating in defining the cut-off, and at least one peripheral zone (201e, 203e, 205e; 202e, 204e, 206e; 240, 250) situated beyond one or both intermediate zones and being connected thereto with continuity, the peripheral zone(s) reflecting the rays from the filament so that they propagate in planes which are essentially vertical and parallel to the optical axis.
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