An illumination device for a motor vehicle light has a plate-like transparent light guiding body (LGB). Light sources are arranged on a narrow side of the LGB and emit light that enters the LGB and propagates therein in a first main light propagation direction (X.sub.1) to the opposite narrow side. At least some of the light rays (S1), incident on the front main surface (FMS) of the light propagating in the X.sub.1 direction are totally reflected at the FMS such that the light strikes a rear main surface (RMS), which has an exit structure. At least some of the light rays (S1) which are totally reflected at the FMS and which strike the RMS exit the LGB via the exit structure. A reflector surface, which is arranged opposite the RMS, is designed such that light rays (S1) emerging from the RMS and striking the reflector surface are deflected by the reflector surface in the direction of the LGB in a second light propagation direction (X.sub.2) and the deflected light rays (S1) pass through the RMS and the FMS and are emitted into an area in front of the illumination device to form a light distribution.

A lighting device disclosed in an embodiment of the invention comprises a substrate; a light source disposed on the substrate; and a light guide member disposed on the substrate and the light source, wherein the light guide member includes an exit surface and a first reflective surface facing the exit surface, the first reflective surface includes a plurality of reflective portions having different heights with respect to an upper surface of the substrate, and each of the plurality of reflective portions may include a plurality of first surfaces inclined with respect to the upper surface of the substrate.

A collimator (1) for collimating light uses a plurality of optical surfaces each forming optical boundary surfaces with a change in the optical density. The collimator (1) has a substantially flat light entry surface (2), a convex light exit surface (4) and a totally reflective side wall (3) connecting the light entry surface (2) to the light exit surface (4). A portable lighting device is provided having such a collimator. In order to provide a collimator and a portable lighting device having a collimator which achieves a better light distribution, the light exit surface of the collimator has light-refracting structures (5).

The optical device is intended to be placed in a housing to form a light signal lamp for a vehicle. The optical device includes, along the longitudinal direction: an input portion receiving rays emitted by a light source; a middle portion having two lateral faces spaced from each other along a transverse direction; an output portion including an output face through which the rays which have propagated in the optical device are emitted. The output portion comprises at least one module having lateral faces which, when viewed in the elevation direction, have an ogive shape and which define a front ridge extending substantially in a plane parallel to a plane.

A lighting device disclosed in an embodiment of the invention comprises a substrate; a light source disposed on the substrate; and a light guide member disposed on the substrate and the light source, wherein the light guide member includes an exit surface and a first reflective surface facing the exit surface, the first reflective surface includes a plurality of reflective portions having different heights with respect to an upper surface of the substrate, and each of the plurality of reflective portions may include a plurality of first surfaces inclined with respect to the upper surface of the substrate.

Disclosed are a lamp for a vehicle, and a lamp assembly for a vehicle. The lamp for a vehicle includes a first light source that emits a first light along a first direction that is perpendicular to an upward/downward direction, a refractor that refracts the first light emitted from the first light source, a second light source that emits a second light toward the refractor along a second direction that crosses the first direction, and a third light source disposed adjacent to the second light source, and that emits a third light toward the refractor along the second direction.

The lighting device disclosed at an embodiment of the invention comprises a substrate; a light source disposed on the substrate; a resin layer disposed on the substrate; and an optical member disposed on the resin layer, wherein the optical member includes a base layer, a pattern layer disposed on the base layer, and a reflective layer disposed on the pattern layer, and a pattern of the pattern layer includes a first surface and a second surface having a predetermined angle with respect to the first surface, the reflective layer is disposed on the first surface, and a difference between a intensity of light emitted to an outside through the first surface and the second surface may be 5 times or more.

A lighting device for a motor vehicle is provided with numerous light sources, at least one optical component in the form of a microstructured film and/or microstructured optical panel, and a collecting and/or focusing lens. The lighting device is configured such that the light from the light sources passes through the collecting and/or focusing lens before passing through the at least one optical component.