Generally, this disclosure enables various technologies for directed illumination. For example, this disclosure enables a sign (e.g., an electronic billboard) having a louver board with a plurality of brims and a plurality of channel groups, where the brims one-to-one shade the channel groups.

An optical article for illuminating building interiors including a reflective grid and a light diffusing element positioned between the reflective grid and a light source. The reflective grid includes one or more arrays of transverse reflective surfaces and is configured to partially transmit and partially redirect incident light over a broad angular range.

A lighting unit (10) is disclosed comprising a torsion box (50) having a plurality of sidewalls (60) and a grid of internal walls (70), each of said internal walls extending between a pair of said sidewalls, said internal walls defining a plurality of compartments (80) within the lighting unit. At least one solid state lighting element (30) is located within at least some of said compartments, and a back panel (20) is arranged at a first opening (51) of the torsion box delimited by the sidewalls such that the back panel covers said compartments, wherein a second opening (53) of the torsion box delimited by said sidewalls opposing the first major opening defines a light exit window of the lighting unit. Also disclosed is a lighting kit comprising such lighting units, and wherein at least some internal walls (70) have a recessed central portion (72) having a height (H′) of at most half the height (H) of said side walls (70).

A lighting unit (10) is disclosed comprising a torsion box (50) having a plurality of sidewalls (60) and a grid of internal walls (70), each of said internal walls extending between a pair of said sidewalls, said internal walls defining a plurality of compartments (80) within the lighting unit. At least one solid state lighting element (30) is located within at least some of said compartments, and a back panel (20) is arranged at a first opening (51) of the torsion box delimited by the sidewalls such that the back panel covers said compartments, wherein a second opening (53) of the torsion box delimited by said sidewalls opposing the first major opening defines a light exit window of the lighting unit. Also disclosed is a lighting kit comprising such lighting units, and wherein at least some internal walls (70) have a recessed central portion (72) having a height (H′) of at most half the height (H) of said side walls (70).

Gobo projection targeting devices have a light source, a lens assembly associated with the light source, the lens assembly having a first element, a second element, and an aiming figure, the first element being closer to the light source, and the second element having a smaller diameter than the first element, such that a first portion of light emitted by the light source and transmitted by the first element will bypass the second element and a second portion of light emitted by the light source and transmitted by the first element will not bypass the second element. The first and second elements may each be converging lenses. The second element may be adapted to generate an image of the aiming figure away from the illuminator. The first portion of light may be a field illumination pattern lacking a focused image. The lens assembly may be movable.

Gobo projection targeting devices have a light source, a lens assembly associated with the light source, the lens assembly having a first element, a second element, and an aiming figure, the first element being closer to the light source, and the second element having a smaller diameter than the first element, such that a first portion of light emitted by the light source and transmitted by the first element will bypass the second element and a second portion of light emitted by the light source and transmitted by the first element will not bypass the second element. The first and second elements may each be converging lenses. The second element may be adapted to generate an image of the aiming figure away from the illuminator. The first portion of light may be a field illumination pattern lacking a focused image. The lens assembly may be movable.

A backlight module and a display device are disclosed. The backlight module includes a light board, and multiple light-emitting elements arranged at intervals on the light board. The backlight module further includes a diffusion plate arranged corresponding to the position of the light board and on the side of a light emitting surface of the light board. The diffusion plate includes: multiple blocking walls arranged at intervals on the side of the planar portion adjacent to the light board; and a planar portion arranged parallel to the light board. The blocking walls are perpendicular to the planar portion, and each blocking wall is arranged corresponding to the gap between two adjacent light-emitting elements. The height of the blocking wall is equal to the distance between the diffusion plate and the light board, and the lower part of the blocking wall adjacent to the light board is opaque.

A backlight module and a display device are disclosed. The backlight module includes a light board, and multiple light-emitting elements arranged at intervals on the light board. The backlight module further includes a diffusion plate arranged corresponding to the position of the light board and on the side of a light emitting surface of the light board. The diffusion plate includes: multiple blocking walls arranged at intervals on the side of the planar portion adjacent to the light board; and a planar portion arranged parallel to the light board. The blocking walls are perpendicular to the planar portion, and each blocking wall is arranged corresponding to the gap between two adjacent light-emitting elements. The height of the blocking wall is equal to the distance between the diffusion plate and the light board, and the lower part of the blocking wall adjacent to the light board is opaque.

According to at least one aspect, a lighting system is provided. The lighting system comprises a strip lighting device including a circuit board, a light emitting diode (LED) mounted to the circuit board, a lens disposed over the LED and configured to receive the light emitted from the LED and change at least one characteristic of the light received from the LED, and an elastomer encapsulating at least part of the circuit board. The lighting system further comprises a fixture configured to receive the strip lighting device and mount to a structure and a lighting accessory configured to removably couple to the fixture over the strip lighting device and change at least one characteristic of the light from the strip lighting device.

An LED light fixture is disclosed with an elongated housing that forms a open lower light channel and an upper light channel that is juxtaposed to the open lower light channel with electronics cavity or conduit positioned there between. The LED light fixture preferably has an elongated reflective insert that extends through the open lower light channel and creates a reflection channel from which the indirect and reflected light is emitted and a detachable cover structure that includes a diffusion lens and a removable baffle structure that attaches to side walls of the upper light channel.