A lighting device for vehicles with a first lighting unit having a light source and a light beam surface for emitting light and with a second lighting unit containing a light source and a flat light guide having opposite flat sides and narrow sides connecting the same for backlighting the first lighting unit. The flat light guide of the second lighting unit has a backlighting section and a linear light section. The backlighting section is arranged behind the first lighting unit and a front flat side of the flat light guide in the backlighting section serves as a light decoupling surface for the light decoupling of a first part of the light coupled into the flat light guide. The linear light section is at least partially arranged next to the first lighting unit. A narrow side of the flat light guide serves as a light decoupling line.

A lighting device for a motor vehicle, having at least one light guide, which is formed planar, and having at least one illuminant. Light rays from the illuminant can be coupled or are coupled into the light guide via a light incoupling surface assigned to the light guide. Incoupled light rays are deflected via at least one light outcoupling structure of the light guide in the direction of at least one light outcoupling surface of the light guide and are again outcoupled from the light guide via the light outcoupling surface. The invention proposes that a rear surface of the light guide, which surface is opposite to the light outcoupling surface, is provided at least over a majority of its planar extent with a facet-like surface structure, which forms the light outcoupling structure of the light guide and formed of a plurality of irregularly formed facet surfaces.

A lighting device for a motor vehicle, having at least one light guide, which is formed planar, and having at least one illuminant. Light rays from the illuminant can be coupled or are coupled into the light guide via a light incoupling surface assigned to the light guide. Incoupled light rays are deflected via at least one light outcoupling structure of the light guide in the direction of at least one light outcoupling surface of the light guide and are again outcoupled from the light guide via the light outcoupling surface. The invention proposes that a rear surface of the light guide, which surface is opposite to the light outcoupling surface, is provided at least over a majority of its planar extent with a facet-like surface structure, which forms the light outcoupling structure of the light guide and formed of a plurality of irregularly formed facet surfaces.

The present invention relates to an optical element, for realizing a first light function and a second light function, the second light function being different from the first light function. The optical element includes at least one light source, a first light guide unit and a second light guide unit. The at least one light source being configured to emit light rays for the first light function and the second light function, and emit light rays at least towards the first light guide unit. The first light guide unit being arranged upstream of the second light guide unit in a main emergence direction of the optical element, and at least a portion of light from the first light guide unit emerges through the second light guide unit. The present invention also relates to a lighting device and a vehicle.

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 method includes energizing a light source of a vehicular lamp assembly according to a duty cycle. The light source emits light responsive to being energized. While energizing the light source, and during an off-cycle of the duty cycle, the method includes transmitting an outgoing short-range wireless communication to a user device. The outgoing short-range wireless communication is transmitted from an antenna at the vehicular lamp assembly. During the off-cycle of the duty cycle, the method includes receiving an incoming short-range wireless communication at the antenna at the vehicular lamp assembly. The incoming short-range wireless communication is transmitted from the user device responsive to the outgoing short-range wireless communication.

An LED vehicle lamp with uniform light emission includes a substrate, wherein at least one LED chip is arranged on the substrate, a light guide column is arranged on one side of a light emitting surface of the LED chip, a surface of one end of the light guide column far away from the LED chip is a recessed conical surface, and the recessed conical surface is recessed towards the LED chip; one end of the light guide column far away from the LED chip is a first end in a truncated cone shape, only a part of the first end of the light guide column is provided with a first electroplated area, the first electroplated area is arranged close to the LED chip, and the recessed conical surface is provided with a second electroplated area.

A light guide body has a first light guide part disposed in front of a light source, a second light guide part extending from a front surface side of the first light guide part toward at least one lateral side of the first light guide part, a plurality of third light guide parts branching and extending from a midway portion of the second light guide part, an incidence part located on a back surface side of the first light guide part, and a first emission part located on a tip side of the plurality of third light guide parts, the second light guide part has a shape in which a cross-sectional area gradually decreases toward the tip side, and the plurality of third light guide parts are arranged next to each other in an extension direction of the second light guide part.

A light guide body has first protrusion protruding from first curved portion toward a side opposite to diverging portion, second protrusion protruding from second curved portion toward a side opposite to the diverging portion, optical axis of light emitted from light source is arranged to be shifted to the one side or the other side in first direction with respect to a boundary of the diverging portion, and according to proportion of lights diverged to the side of a second light guide part and the side of a third light guide part via the diverging portion, a position of a first connecting portion, to which the first protrusion and the first curved portion are connected, is different from a position of a second connecting portion, to which the second protrusion and the second curved portion are connected, in a second direction which is perpendicular to at least the first direction.