A lighting circuit drives a light source including N (N represents an integer of 2 or more) multiple light-emitting elements coupled in series. A bypass switch circuit includes N multiple bypass switches, each coupled in parallel to a corresponding light-emitting element. A constant current driving circuit supplies a driving current stabilized to a target current to the light source. A light distribution controller controls the bypass switch circuit. For a given light distribution pattern, the duty ratio D.sub.i(%) is determined for each of the N multiple light-emitting elements. Multiple light-emitting elements are formed as control units having a sum total of duty ratios that is less than 100%. The light distribution controller controls the multiple bypass switches such that the multiple light-emitting elements included in the same control unit are not turned on at the same time.

A vehicular headlamp comprising: a front lens body extending in a predetermined direction; a plurality of optical systems disposed along the predetermined direction behind the front lens body; and a control means, wherein the plurality of optical systems each includes: a rear lens unit disposed behind the front lens body; and a light source which is disposed behind the rear lens unit and emits light which is irradiated forward permeating the rear lens unit and the front lens body in that order to form a light distribution pattern for a headlamp, and the control means individually controls lighting states of the light sources in each of the plurality of optical systems.

A vehicular headlamp comprising: a front lens body extending in a predetermined direction; a plurality of optical systems disposed along the predetermined direction behind the front lens body; and a control means, wherein the plurality of optical systems each includes: a rear lens unit disposed behind the front lens body; and a light source which is disposed behind the rear lens unit and emits light which is irradiated forward permeating the rear lens unit and the front lens body in that order to form a light distribution pattern for a headlamp, and the control means individually controls lighting states of the light sources in each of the plurality of optical systems.

A vehicular lamp comprising a front lens body extending in a predetermined direction horizontally inclined by a predetermined angle when viewed from the front, a rear lens unit disposed behind the front lens body, and a light source which is disposed behind the rear lens unit and emits light for a headlamp light distribution pattern, wherein the rear lens unit is a lens unit configured to condense, in a first direction, light from the light source, the front lens body is a lens unit configured to condense, in a second direction orthogonal to the first direction, light from the rear lens unit, and at least one light diffusing element configured to diffuse light from the optical system in at least one of the predetermined direction and a direction orthogonal to the predetermined direction is set in a region of the front lens body permeated by light from the optical system.

A vehicular lamp comprising a front lens body extending in a predetermined direction horizontally inclined by a predetermined angle when viewed from the front, a rear lens unit disposed behind the front lens body, and a light source which is disposed behind the rear lens unit and emits light for a headlamp light distribution pattern, wherein the rear lens unit is a lens unit configured to condense, in a first direction, light from the light source, the front lens body is a lens unit configured to condense, in a second direction orthogonal to the first direction, light from the rear lens unit, and at least one light diffusing element configured to diffuse light from the optical system in at least one of the predetermined direction and a direction orthogonal to the predetermined direction is set in a region of the front lens body permeated by light from the optical system.

A terrestrial vehicle lighting module which includes an electroluminescent source including at least one electroluminescent element, an electronic device designed to control the electroluminescent element, and an interposer electrically connecting the electroluminescent source and the electronic device.

A motor vehicle having at least one headlight for illuminating the surroundings of the motor vehicle and a control device for controlling the headlight, wherein the headlight comprises a plurality of lighting segments that are arranged in the manner of a matrix and that can be actuated separately by the control device for providing a lighting brightness that can be predefined separately for the individual lighting segments, wherein the control parameter predefining the specific lighting brightness for each of the lighting segments can be calculated by the control device in at least one computing step as a function of input parameters that can be provided by at least one vehicle device, wherein the computing step or at least one of the computing steps may be executed in parallel by the control device for a plurality of the lighting segments.

A motor vehicle having at least one headlight for illuminating the surroundings of the motor vehicle and a control device for controlling the headlight, wherein the headlight comprises a plurality of lighting segments that are arranged in the manner of a matrix and that can be actuated separately by the control device for providing a lighting brightness that can be predefined separately for the individual lighting segments, wherein the control parameter predefining the specific lighting brightness for each of the lighting segments can be calculated by the control device in at least one computing step as a function of input parameters that can be provided by at least one vehicle device, wherein the computing step or at least one of the computing steps may be executed in parallel by the control device for a plurality of the lighting segments.

A vehicular lamp comprising a front lens body extending in a predetermined direction, and a plurality of optical systems disposed along the predetermined direction behind the front lens body, the plurality of optical systems each includes a rear lens unit disposed behind the front lens body, and a light source which is disposed behind the rear lens unit and emits light which is irradiated forward permeating the rear lens unit and the front lens body in that order to form a headlamp light distribution pattern.

A vehicular lamp comprising a front lens body extending in a predetermined direction, and a first optical system and a second optical system disposed adjacent to each other along the predetermined direction behind the front lens body, the first optical system includes a first rear lens unit, and a first light source which emits light which is irradiated forward permeating the first rear lens unit and the front lens body, the second optical system includes a second rear lens unit, and a second light source which emits light which is irradiated forward permeating the second rear lens unit and the front lens body, wherein the light from the first light source forms a first light emitting region in the front lens body, and the light from the second light source forms a second light emitting region which overlaps with the first light emitting region in the front lens body.