Headlamp, particularly of rectangular configuration, for use as antidazzle lamp on motor vehicles

Claim 1

A headlamp of a rectangular configuration for use as an antidazzle headlamp in motor vehicles, comprising a rectangular reflector defining a vertical plane and diagonal planes of symmetry, an optical axis and focal point; an incandescent filament in the form of a cylindrical coil whose cylinder axis extends horizontally at right angles to the optical axis and whose center of gravity is located at said focal point; optical means for distributing light emitted by the incandescent filament; said reflector being divided into three pairs of diametrically opposed surface portions, the portions of a first pair extending horizontally and being delimited by intersection lines of the reflectior with the diagonal planes of symmetry, said first pair of surface portions having the shape of a sector of a first paraboloid; the surface portions of a second pair when viewed in the direction of said optical axis corresponding to upper right-hand and lower left-hand areas delimited by intersection lines of the reflector with the vertical plane and one diagonal plane, said second pair of surface portions forming together a sector of composite eliposoid-paraboloid whose vertical sections are parabolas nad horizontal sections are elipses; and the surface porions of the third pair corresponding to upper left-hand and lower right-hand areas delimited by intersection lines of the reflector with the vertical plane and the other diagonal plane, and said third pair of surface portions having the shape of a sector of a second paraboloid whose center axis is inclined upwardly relative to a center axis of said first paraboloid.