Abstract: An optical device for a motor vehicle comprising a surface light source emitting light rays in a first direction, wherein it comprises an optical system including first deflecting optical means that are at least locally remote from the surface light source and deflecting the light rays emitted in the first direction, in a second direction different from the first direction.

Abstract: An optical system for a motor vehicle, the optical system performing at least one main optical function and including in particular a diffusion screen, at least one light source of the LED type, each LED of the optical system producing a set of rays of light to be propagated in the diffusion screen wherein the screen is in the form of a curved sheet, with an upper lateral flange and a lower lateral flange which meet at a periphery which has in particular a rear face and a front edge and the principal function is performed essentially via an output face constituted by the front edge of the diffusion screen.

Abstract: An optical device for a motor vehicle comprising a surface light source emitting light rays in a first direction, wherein it comprises an optical system including first deflecting optical means that are at least locally remote from the surface light source and deflecting the light rays emitted in the first direction, in a second direction different from the first direction.

Abstract: An optical system for a motor vehicle, the optical system performing at least one main optical function and including in particular a diffusion screen, at least one light source of the LED type, each LED of the optical system producing a set of rays of light to be propagated in the diffusion screen wherein the screen is in the form of a curved sheet, with an upper lateral flange and a lower lateral flange which meet at a periphery which has in particular a rear face and a front edge and the principal function is performed essentially via an output face constituted by the front edge of the diffusion screen.

Abstract: A heat dissipation component for a vehicle lighting and/or signalling device of the type comprising a printed circuit board, a light-emitting diode comprising a heat dissipation base and a pair of electrical connection tabs and a heat dissipater extending facing the printed circuit board, wherein the heat dissipater comprises a heat exchange portion held against the base the diode and in that the heat exchange portion of the heat dissipater comprises means for orienting the diode that protrude substantially perpendicularly to the heat exchange portion of the dissipater, the heat exchange face of the base of the diode being arranged on an orienting means in such a way that the diode is oriented relative to a reference orientation and a reference plane of the dissipater.

Abstract: An optical system for a motor vehicle, the optical system performing at least one main optical function and including in particular a diffusion screen, at least one light source of the LED type, each LED of the optical system producing a set of rays of light to be propagated in the diffusion screen wherein the screen is in the form of a curved sheet, with an upper lateral flange and a lower lateral flange which meet at a periphery which has in particular a rear face and a front edge and the principal function is performed essentially via an output face constituted by the front edge of the diffusion screen.

Abstract: A signalling or lighting apparatus comprising at least one light source defining a main emission direction, together with at least one elongate light guide, one end of which is lit by the light source, the light guide being adapted to diffuse the light transversely along its length. At least in the vicinity of the light source, the guide has a longitudinal axis which is disposed transversely to the main emission direction, in such a way that some of the light flux from the light source provides a primary signalling or lighting function with a relatively high luminous intensity, and a second signalling or linear lighting function, of lesser light intensity, is provided along a length of the light guide.

Abstract: This invention relates to a lighting or indicator device, in particular for motor vehicles, comprising at least one light source and at least one output optical system in order to form a lighting or indicator lamp beam consistent with regulations. In accordance with this invention the device comprises at least one input optical system comprising a collimating element receiving light rays emitted by the source and transmitting a beam of parallel rays towards an output optical system which forms a lighting or indicator lamp beam.

Abstract: The welding method is for connecting together first and second metal elements (20, 16). The first element (20) forms a support or is for being fitted onto a support (12). During the method, a welding portion (20A) is formed in the first element (20), the welding portion having a connection end (22) connected to a support portion (20B) of the first element (20). A free end face (F) is formed in the welding portion (20A) of the first element (20) remote from the connection end (22). A high-energy beam (24) is directed onto the welding portion (20A) of the first element (20) in such a manner that the axis (X) of the beam (24) passes through the welding portion (20A) from the free end face (F) towards the connection end (22), thereby causing at least a portion of the mass of said first element (20) to melt, the molten mass coming into contact with the second element (16) by said mass collapsing.

Abstract: A heat dissipation component for a vehicle lighting and/or signalling device of the type comprising a printed circuit board, a light-emitting diode comprising a heat dissipation base and a pair of electrical connection tabs and a heat dissipater extending facing the printed circuit board, wherein the heat dissipater comprises a heat exchange portion held against the base the diode and in that the heat exchange portion of the heat dissipater comprises means for orienting the diode that protrude substantially perpendicularly to the heat exchange portion of the dissipater, the heat exchange face of the base of the diode being arranged on an orienting means in such a way that the diode is oriented relative to a reference orientation and a reference plane of the dissipater.

Abstract: A lighting or signalling device in which a particular output unit of the device in question is formed, the output unit consisting of a stack of screens, independent of one another; each screen comprises a plurality of optical patterns produced in its thickness, able to divert light signals emitted by a light source; the spread of the light beam emerging from the device in question is thus adjustable in a first diffusion direction (OX), corresponding, for each screen in question, to a direction parallel to a plane defined by the screen and containing the optical patterns, and in a second diffusion direction (OZ), corresponding to a direction parallel to a plane roughly perpendicular to the planes defined by the screens, the spread on the second diffusion plane depending on the relative positions of the various screens. In this way in particular a “block of illuminated material” effect is obtained.

Abstract: The invention relates to an indicating and/or lighting device for a motor vehicle, said device comprising a casing inside which there are arranged at least one main light source, at least one reflector associated with the main light source(s), optionally at least one intermediate screen that is substantially transparent and lies opposite said main light source or at least one of said main light sources, and a closing covering for the casing. At least one of the faces of the closing covering and/or of the optional intermediate screen is provided with a plurality of foci for diffusing light by means of surface alterations of said face.

Abstract: Method of fixing a power light-emitting diode (1) having a metallic base (2) to a metallic heat-radiating element (3), according to which the base (2) of the light-emitting diode is fixed to the radiating element (3) by laser spot welding (11).

Abstract: This invention relates to a lighting or indicator device, in particular for motor vehicles, comprising at least one light source and at least one output optical system in order to form a lighting or indicator lamp beam consistent with regulations. In accordance with this invention the device comprises at least one input optical system comprising a collimating element receiving light rays emitted by the source and transmitting a beam of parallel rays towards an output optical system which forms a lighting or indicator lamp beam.

Abstract: The invention relates to an indicating and/or lighting device for a motor vehicle, said device comprising a casing inside which there are arranged at least one main light source, at least one reflector associated with the main light source(s), optionally at least one intermediate screen that is substantially transparent and lies opposite said main light source or at least one of said main light sources, and a closing covering for the casing. At least one of the faces of the closing covering and/or of the optional intermediate screen is provided with a plurality of foci for diffusing light by means of surface alterations of said face.

Abstract: The invention relates to an indicating and/or lighting device for a motor vehicle, said device comprising a casing inside which there are arranged at least one main light source, at least one reflector associated with the main light source(s), optionally at least one intermediate screen that is substantially transparent and lies opposite said main light source or at least one of said main light sources, and a closing covering for the casing. At least one of the faces of the closing covering and/or of the optional intermediate screen is provided with a plurality of foci for diffusing light by means of surface alterations of said face.

Abstract: An optical component has working surfaces separated by neutral surfaces which constitute discontinuities between the working surfaces. The component is made by a method which comprises: forming, in a mould, surfaces complementary to the working and neutral surfaces of the component; and moulding the component on these surfaces of the mould. The step of forming the complementary surfaces in the mould is carried out by continuous cutting of a block of material using a cutting tool.

Abstract: The invention concerns a light and/or signalling device for a motor vehicle comprising at least one light engine (2), comprising at least one light emitting diode (3) emitting a light beam in the direction of the engine, in particular along the axis (X) of the said engine, and at least one optical guide (G), one end (e1) of which is illuminated by the or at least one of the light emitting diodes, this optical guide being able to emit light, in particular over all or part of its length, the optical guide comprising at least one blind orifice (12, 13) produced in the thickness of the said optical guide and situated opposite the light engine (2), and diverting the light beam, in particular by a lateral reflection of the latter.

Abstract: The invention proposes an indicator lamp comprising an optical axis oriented from the rear to the front, on which there is a light source which is provided for emitting a light flux towards the front, and of the type comprising an optical device for recovering and distributing the rays of light emitted by the source, with a view to providing an indicating faction that meets the regulations, wherein the optical device comprises a coaxial annular reflector and, in front of the light source a central optical part known as the light engine which is provided for distributing the rays of light emitted by the source in directions that are generally transverse about the optical axis, towards the coaxial annular reflector that is provided for distributing the rays of light axially towards the front.

Abstract: A signalling or lighting apparatus comprising at least one light source defining a main emission direction, together with at least one elongate light guide, one end of which is lit by the light source, the said light guide being adapted to diffuse the light transversely with respect to its length. At least in the vicinity of the light source, the guide has a longitudinal axis which is disposed transversely to the main emission direction, in such a way that some of the light flux from the light source provides, independently of the light guide, a primary signalling or lighting function with a relatively high luminous intensity, and so that a second signalling or linear lighting function, of lesser light intensity, is provided along the length of the light guide.