A lighting device for vehicles includes a light source unit containing numerous light sources, and includes a hologram unit containing numerous hologram segments for generating a predefined light distribution. The hologram segments form reflection hologram segments behind and/or next to the light source unit in the main beam direction (H) of the lighting device, such that light emitted from the light source strikes the reflection hologram segment at an acute angle ). Holographic diffraction information is stored in the reflection hologram segments for generating a signal light distribution. The light source unit contains just one printed circuit board or one printed circuit board substrate.

A vehicle lamp includes at least a light source, a primary reflector, and an inner lens. A method of forming the vehicle lamp includes dividing a facet area of the primary reflector into a plurality of smaller facets and analyzing light intensity performance for each smaller facet. The method further includes comparing the light intensity performance for each smaller facet to a predetermined standard, and identifying smaller facets that do not meet the predetermined standard. The method further includes adjusting a position of the light source associated with each smaller facet that does not meet the predetermined standard or re-shaping an outer surface of the primary reflector in an area associated with each smaller facet that does not meet the predetermined standard.

Aspects of the disclosure include a vehicle having a glass disposed on the vehicle and a lighting device disposed within the glass, wherein the lighting device includes a plurality of light emitting diodes that are configured to emit light in a first direction, where the first direction is not normal to an outer surface of the glass.

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 comprises a center body portion that extends along a center axis and which has a first end associated with a light source and an opposite second end associated with a plurality of non-coplanar surfaces. A first leg portion extends away from the center body portion in a first direction and a second leg portion extends away from the center body portion in a second direction opposite of the first direction.