Abstract: A motor vehicle headlight comprising: a light source; a first reflector of the ellipsoid kind having a first focus situated in the vicinity of the source; a mask passing through the second focus of the first reflector and presenting a light-passing window in the vicinity of said second focus, the shape of the window being fixed and predetermined so as to define a virtual light source whose light emission pattern corresponds essentially to said shape; and a second reflector situated on the opposite side of the mask to the first reflector and having a surface which itself determines the positions of the images of the virtual source as a function of a determined photometric distribution. The headlight is particularly suitable for use with an arc lamp that is required to co-operate with a reflector capable itself of generating a beam with a sharp cutoff.

Abstract: 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.

Abstract: A headlamp for an automobile vehicle comprises a luminous filament, a reflector, and a closing glass. According to the invention, the reflector comprises a parabolic base part and side pieces in the form of parabolic cylinders focussed on the filament, and in addition there are deflecting means, for example toroidal lenses, which re-direct the inclined rays of light received from the filament into the horizontal direction, towards the side pieces. A greater proportion of the luminous flux is thus recovered, which enables production of lamps with a small height and with a high efficiency.

Abstract: A motor vehicle signal lamp of the type comprising a light source (12) and deflector means for causing the rays emitted by the source to propagate in a direction which is essentially parallel to a given general emission direction (x--x), wherein the deflector means comprise a first lens (20) which is generally balloon-shaped and disposed around the source and in proximity thereto, and a second lens (30) which is generally in the form of a plate disposed in front of the source (12) and of the first lens (20) and which extends transversely to the general emission direction, wherein the first lens comprises deflector elements (22; 23) for causing the light rays it receives from the source to be deflected at least vertically towards said second lens, and wherein the second lens (20) includes deflector elements (32, 34) for deflecting the light rays it receives from the first lens at least horizontally to a direction which is substantially parallel to said general emission direction (x--x).