Abstract: A dipped headlamp for motor vehicles comprising a bulb, a reflector and closure glass placed in front of the reflector and bulb. The bulb is an axial filament bulb without a masking cup. The reflector comprises a reflecting surface without any discontinuity and suitable for forming images of the filament with all points of the image being situated below a horizontal plane. Correction means for angularly displacing said images upwardly to raise them to level of the two horizontal masking half-planes comprise prisms in the closure glass or side sections of the reflector which are tilted upwardly.

Abstract: In accordance with a preferred, exemplary embodiment of the invention, an apparatus for forming a blisk from a workpiece is disclosed. The workpiece includes a blank having oppositely facing first and second faces defined by a radially inner base, a radially outer top, a first edge, and a second edge.The apparatus includes first and second complementary electrodes positionable about the workpiece blank. Each electrode has a support portion and a working portion. Means for channeling electrolyte from an inlet to an outlet defined between the electrodes, and means for sealing the working portions to prevent leakage are disclosed.Electrolyte is channeled between the first and second edges to finally electrochemically machine an airfoil in a single operation from the blank.

Abstract: A dipped headlight for a motor vehicle, comprises: a reflector (200) including two sectors (201, 202) in the form of paraboloids of revolution about a common axis, said sectors being disposed symmetrically about said axis and being delimited by two axial planes, one of which planes is horizontal and the other of which planes is at an angle to said horizontal plane equal to the lift angle (.alpha.

Abstract: The invention relates to a masked beam motor vehicle headlamp of the type comprising, in succession: a reflector (1); a light source (3); a masking screen (E) having a cutoff edge (A); and a converging lens (4). The headlamp is characterized in that the screen is fitted, beneath its cutoff edge (A) and at least in its central portion, with an opening suitable for allowing a portion of the light flux directed towards the screen to pass therethrough. Means are provided to direct said light flux passing through said opening so that it is combined with the light flux which is not intercepted by the screen, thereby improving the light characteristics of the masked beam as finally projected by the headlamp.

Abstract: An adaptor in accordance with the invention serves to couple a cylindrical light guide (40) with a light source (10). The adaptor comprises an inlet surface (20) which is concave, which is spherical, which is centered on the center point (0) of said light source and which receives said light source in such a manner that all light rays from said source striking said inlet surface pass therethrough without being deflected and thus enter the guide; the adaptor further includes a light flux recovery surface (30) which is convex and symmetrical about the axis of the light guide, said recovery surface is such that the angle of incidence of a light ray emitted from the source and passing into the guide through the inlet surface is always greater than the limiting angle for total internal reflection corresponding to the refractive index of the material constituting the guide.

Abstract: A headlamp comprising a reflector of which at least one sector is in the form of a paraboloid of reduction, a bulb with an axial filament offset upwards in the radial direction with respect to the axis of the paraboloid, and a light-distributing glass placed in front of the reflector. The filament is centered in the axial direction on the focus of the paraboloid. The surfaces of the reflector situated outside the sector in the form of a paraboloid are designed so as to produce images of the filament which are all situated below the cut-off. Alternatively, the light-distributing glass participates in the deflection, in combination with the surfaces of the reflector. In an advantageous variant the reflector is completely parabolic and homologous deflecting zones are then provided on the light-distributing glass to lower all the images thus produced below the cut-off.

Abstract: A motor vehicle headlamp comprising in combination an optical system for recovering flux having a rectilinear focal segment and an optical system for rectifying images having a focal segment coinciding with the former and able to produce a beam of rays of controlled directivity passing through a narrow light window, while preserving a high luminous efficiency. The flux recovery system is constituted by an elliptical paraboloid, an hyperbolic paraboloid or their optical equivalents. By using various combinations of optical elements, it is possible to arrange the flux recovery system both in the axis of the rays leaving the headlamp, as well as on the side of the body work or on the lower part of the latter.

Abstract: In a vehicle headlamp, a light deflecting system is provided which comprises two plate-like transparent deflecting elements. Each element has a series of parallel fibs, and the elements are movable one relative to the other at right angles to the length of the ribs. The profiles of the ribs are so chosen that, in a neutral position of the deflecting elements, each rib on one deflecting element faces a rib of complementary shape on the other deflecting element, so that the system imposes no net deflection on light rays passing through. To produce a deflection of these rays, the deflecting elements are shifted relative to the other, so that then, the deflection suffered by the light in passing through one deflecting element is not wholly cancelled by the deflection suffered in passing through the other deflecting element; by suitable choice of the profile of the ribs, the net deflection is the same for all the deflected rays.

Abstract: A vehicle headlamp is constructed with its reflector and front lens adapted to be fixedly mounted in the bodywork of the vehicle, but incorporates a beam deflecting system, in order that the direction of the beam may nonetheless be adjusted. In one form, the beam deflecting system comprises two Fresnel lenses, mounted face to face in a position to intercept the whole of the headlamp beam, one being equivalent to a diverging lens with cylindrical surfaces, and one being equivalent to a converging lens with cylindrical surfaces. In a neutral position, the effects of the two lenses cancel out, so that no deflection of the beam occurs. One of the lenses is movable in translation away from the neutral position, so that a deflection of the beam occurs, without any other change in the beam pattern. In modified embodiments, the stationary Fresnel lens is not used; instead, its effect is produced by using a reflector of modified shape.