A lighting apparatus for vehicles, having a light source and a headlamp lens assigned thereto. The headlamp lens has scattering optical elements for scattering the light. A light guide is disposed between the light source and the headlamp lens in such a way that, firstly, light emitted by the light source strikes an area of the headlamp lens delimited by an edge of the same or a portion of the headlamp lens and/or that, secondly, the plurality of light sources are disposed with different spatial orientations with respect to one another in terms of their principal axes such that the light emitted by the light sources strikes different portions of the headlamp lens, wherein the headlamp lens is disposed upstream and/or downstream of the light source in the principal emission direction for the purposes of scattering the light in a transmissive or reflective manner.

A lighting or signaling device (100) comprises a first light source (101) and a housing (110), the housing (110) defining at least a first light exit region (120) and a second light exit region (130) independent of each other, part of light from the first light source (101) exiting as a first light beam from the first light exit region (120); the lighting or signaling device further comprises a light guide member (140), which is assigned to the first light source (101) and is positioned and configured to guide a part of the light from the first light source (101) to exit through at least the second light exit region (130). A motor vehicle is also disclosed.

A vehicular apparatus includes: a housing that is configured to be attached to a vehicle; and a first light source and a second light source that are provided in the housing to emit light having main wavelengths in mutually different wavelength ranges. The first light source emits light having a main wavelength in 490 nm-498 nm while the vehicle is being automatically driven.

Provided systems and methods for an aircraft lighting system (ALS) include a centralized blue generator that supplies blue light to a plurality (N) of passive light-heads distributed at various locations on the aircraft. A load profile for use of the N passive light-heads during all flight phases and operational phases is developed and uploaded into the system. Each of the passive light-heads is operationally coupled to the blue light generator via a respective light transmission element that is gated with a respective one of N light switches. A light generating control unit (LGCU) is coupled to the blue light generator, and controls the generation and actuation of blue light, in addition to controlling light switch positions, as a function of navigation data and the load profile. Each of the N passive light-heads comprises a respective light conversion element to convert the blue light into red, green, or white light.

Provided systems and methods for an aircraft lighting system (ALS) include a centralized blue generator that supplies blue light to a plurality (N) of passive light-heads distributed at various locations on the aircraft. A load profile for use of the N passive light-heads during all flight phases and operational phases is developed and uploaded into the system. Each of the passive light-heads is operationally coupled to the blue light generator via a respective light transmission element that is gated with a respective one of N light switches. A light generating control unit (LGCU) is coupled to the blue light generator, and controls the generation and actuation of blue light, in addition to controlling light switch positions, as a function of navigation data and the load profile. Each of the N passive light-heads comprises a respective light conversion element to convert the blue light into red, green, or white light.

A multi-branched light guide device for a light assembly includes first, second, and third braches each adapted to internally transmit respective portions of a plurality of lights rays along respective directions. The branches each include a respective outer surface adapted to internally reflect the respective portions in the respective directions. A trunk of the device is connected to the branches, and is adapted to internally transmit the plurality of light rays against the outer surfaces of the branches.

The light-guiding optical unit (1) for a light device of motor vehicles comprises a light guide (2) that comprises at least one routing surface (3), and at least one light source (4) to generate light rays (10). The light-guide (2) further comprises a top surface (12) at least a part of which is constituted by the output surface (15), and a bottom surface (13) opposite the top surface (12) and fitted with a prismatic structure (16) comprising reflective surfaces (7). The routing surface (3) and the reflective surfaces (7) are mutually arranged in such a way that the routing surface (3), by means of routing by refraction on this surface (3) or reflection from this surface (3), directs light rays (10) to the prismatic structure (16) in such a way that it directly lights up only the reflective surfaces (7) with the light rays (10), the reflective surfaces (7) being configured to direct light rays (10) that have fallen onto them this way directly from the routing surface (3) to the output surface (15) in such a way that the light rays (10) can exit from the light guide (2) through the output surface (15).

A lighting system may include one or more light sources and one or more light guides. A lighting system may be integrated into a window, a skylight, an exterior light such as a headlight, a tail light, or a high center-mounted stop light, or other exterior or interior portions of a system such as a vehicle. The light guide may be embedded in an adhesive layer in a vehicle structure. The light guide may be index-matched to the adhesive layer so that unilluminated portions of the light guide are indistinguishable from the vehicle structure. The light guide may be formed from optical fibers. The optical fibers may include a light-scattering optical fiber that scatters light out of the vehicle structure. The light-scattering optical fiber may be fused to a non-scattering optical fiber that guides light from a light source to the light-scattering optical fiber.

Regarding a light guide lens, in cross section in a direction perpendicular to widthwise direction and a direction parallel to optical axis of the light emitted from the light source, a first reflecting section has a first reflecting surface of which inclined angle with respect to the optical axis of light emitted from a light source gradually reduces from a central section in the widthwise direction toward both end portions, and in cross section in a direction parallel to the widthwise direction and a direction parallel to the optical axis of the light emitted from the light source, a second reflecting section has second reflecting surfaces which are inclined in opposite directions with each other toward one side and other side in the widthwise direction with respect to the optical axis of the light emitted from the light source and in which a plurality of reflecting cuts are periodically arranged.

Regarding a light guide lens, in cross section in a direction perpendicular to widthwise direction and a direction parallel to optical axis of the light emitted from the light source, a first reflecting section has a first reflecting surface of which inclined angle with respect to the optical axis of light emitted from a light source gradually reduces from a central section in the widthwise direction toward both end portions, and in cross section in a direction parallel to the widthwise direction and a direction parallel to the optical axis of the light emitted from the light source, a second reflecting section has second reflecting surfaces which are inclined in opposite directions with each other toward one side and other side in the widthwise direction with respect to the optical axis of the light emitted from the light source and in which a plurality of reflecting cuts are periodically arranged.