A light guide structure with jagged protrusions is configured in a lighting device of a mobile vehicle. The light guide structure comprises a light injecting surface and a light emitting surface. The light injecting surface comprises a middle section and two side sections deployed respectively at opposite ends of the middle section. At least a portion of the side sections has a light guiding area. A light source module forms an irradiation area by the light guide structure, the microstructure of the light guiding area is configured to enable the light from the light guide to pass through the light injecting surface generating refraction, diffusion, or scattering, so as to reduce the generation of stray light, and improve the clarity of the beam contour.

A system and method for a light panel assembly which is particularly useful for commercial horticultural applications. An extruded heat sink frame provides for a layered light panel assembly with superior heat dissipation characteristics and low power requirements while providing highly efficient returns and output radiant flux.

A lighting system comprising a track having a first and a second rail, mutually extending equidistantly. Said first and second rail comprise a first respectively a second electrically conductive strip, mutually electrically isolated. A lighting module comprising a first and second electrical contact, which lighting module in mounted position rests by gravitational force on the first and second rail. When mounted the first and second electrical contact are in electrical contact with a respective one of the first and second electrically conductive strip. The lighting module is dismountable from the track by a single displacement of the lighting module in a direction against the direction of the gravitational force.

A stepped light guide illumination system employing a planar sheet of an optically transmissive material having a stepped light guiding structure including one or more parallel arrays of channels. Light is input into the stepped light guiding structure using a number of side-emitting LED sources located within the channels and coupled to the stepped light guiding structure at multiple locations. The LED sources are mounted to a printed circuit board extending along one or more channels and having a width which is greater than a width of the respective channel. Light is extracted from the stepped light guiding structure using a two-dimensional pattern of light extraction features formed in a surface of the planar sheet.

The present invention relates to a light-guiding assembly having a first light-guiding element, which is allocated to a first light source and used to receive and guide light from the first light source, and is provided with a first light incidence portion, a first light exit portion, and a first intermediate optical portion that is arranged between them. A second light-guiding element, which is allocated to a second light source and used to receive and guide light from the second light source, and is provided with a second light incidence portion, a second light exit portion, and a second intermediate optical portion that is arranged between them. Wherein the first light exit portion faces the second intermediate optical portion, and light leaving the first light exit portion can pass through the second intermediate optical portion and exit from the second light exit portion.

Illumination systems are described for illuminating a target area, e.g., a floor of a room, using active illumination devices in optical communication with passive illumination devices. The active and passive illumination devices of the illumination system are configured and arranged relative to each other in a variety of ways so a variety of intensity distributions can be provided by the illumination system. Such illumination system is implemented to provide light for particular lighting applications, including office lighting, garage lighting, or cabinet lighting.

A long decorative illumination device which is long in the vertical direction and for being installed in the sides of a game machine may be provided with a plurality of light guide plates that can be individually illuminated. The plurality of light guide plates may be arranged in the vertical direction with gaps therebetween and in a slanted state so that the light emitting surfaces thereof are oriented toward a window part which is open from at least two directions of the front surface and the side surfaces of the decorative illumination device. A controller may control the light emission of the plurality of light guide plates to perform visual effect lighting having an impactful visual effect, while controlling the light emission from the plurality of light guide plates to convey predetermined information.

A keyboard device includes a keyboard module and an illumination module. The keyboard module includes plural first keys and at least one second key. The illumination module includes a light guide plate and a circuit board. The light guide plate includes plural first mapping zones and a second mapping zone. The first mapping zones are located under the corresponding first keys. The second mapping zone is located under the second key. Moreover, at least one side-view light-emitting element and at least one top-view light-emitting element are installed on the circuit board. The side-view light-emitting element emits a first light beam. The top-view light-emitting element emits a second light beam. The first light beam is extracted through the corresponding first mapping zone and transferred to the corresponding first key. The second light beam is transferred to the second key.

A panel lamp includes a lamp frame, light bars, an upper light diffusing plate, an upper light guiding plate, a lower light guiding plate, a lower light diffusing plate and a middle optical isolation element. The lamp frame includes at least three frame bars successively connected, each provided with an installation groove. Each installation groove is internally provided with one lamp bar, each light bar is provided with an upper lamp body and a lower lamp body. The upper light diffusing plate, upper light guiding plate, middle optical isolation element, lower light guiding plate and lower light diffusing plate are snap-fitted in the installation grooves. The upper lamp body faces a side edge of the upper light guiding plate, and the lower lamp body faces a side edge of the lower light guiding plate. The middle optical isolation element is between the upper lamp body and the lower lamp body.

A lighting system comprising a track having a first and a second rail (5, 7), mutually extending equidistantly. Said first and second rail comprise a first respectively a second electrically conductive strip, mutually electrically isolated. A lighting module (17) comprising a first and second electrical contact, which lighting module in mounted position rests by gravitational force on the first and second rail. When mounted the first and second electrical contact are in electrical contact with a respective one of the first and second electrically conductive strip. The lighting module is dismountable from the track by a single displacement of the lighting module in a direction against the direction of the gravitational force.