The invention relates to a light guiding device for guiding light. The light guiding device comprises at least one light guide, at least one beam splitter element, and at least one light decoupling device. The at least one light guide comprises at least two layers. The at least one beam splitter element is provided between the at least two layers of the at least one light guide, where the at least one beam splitter element is designed for partially transmitting and reflecting incident light propagating in the at least one light guide. The at least one light decoupling device is provided for coupling incident light out of the at least one light guide. Furthermore, the invention also relates to an illumination device and a display device for displaying two-dimensional and/or three-dimensional information comprising such a light guiding device.

A directional display may include a waveguide. The waveguide may include light extraction features arranged to direct light from an array of light sources by total internal reflection to an array of viewing windows and a reflector arranged to direct light from the waveguide by transmission through extraction features of the waveguide to the same array of viewing windows. A further spatially multiplexed display device comprising a spatial light modulator and parallax element is arranged to cooperate with the illumination from the waveguide. An efficient and bright autostereoscopic display system with low cross talk and high resolution can be achieved.

According to one embodiment, an electronic device includes a liquid crystal panel and a camera. The liquid crystal panel includes a display area, an incident light control area, and an emitted light control area. The camera includes a light-entering surface and a light source. The liquid crystal panel is configured to selectively transmit visible light emitted from the light source in the emitted light control area and to selectively transmit visible light from outside in order to cause visible light to enter the camera from the outside in the incident light control area.

Lighting controller including control system having first control facility and second control facility. First and second control facilities respectively are for controlling first and second visible-light sources including first and second pluralities of semiconductor light-emitting devices spaced apart from and along longitudinal axis. First and second visible-light sources respectively are positioned for directing first and second beams of first and second visible-light emissions from first and second pluralities of semiconductor light-emitting devices in first and second beam directions. First and second control facilities respectively are programmed for controlling first and second intensities of first and second beams of first and second visible-light emissions. Control system is programmed for modulating first intensity of first beam and second intensity of second beam in manner for causing first and second beams of first and second visible-light emissions to collectively emulate progression of ambient sunlight. Lighting systems and lighting control methods.

A backlight unit and a display device in which the amount of light emitted to the top surface of the backlight unit is increased, are provided. The backlight unit includes light sources disposed on a printed circuit substrate, a reflective layer disposed on at least a partial area of an area in which the plurality of light sources are not disposed on the printed circuit substrate, a color conversion light guide layer disposed on the light sources, a non-color conversion light guide layer disposed on a surface of the color conversion light guide layer, a transparent film disposed on the color conversion light guide layer and the non-color conversion light guide layer and spaced apart from the light sources and the reflective layer, and light diffusion patterns disposed on a surface of the transparent film and corresponding to each light source.

A display device includes a panel, a backlight, and an adhesive tape. The backlight is placed under the panel. The adhesive tape has a light blocking property and is bonded to an end face of the panel and the backlight.

A backlight module includes a circuit board, a light-shielding plate, and a light guide plate. The circuit board is provided with first and second light-emitting units. The light-shielding plate is disposed above the circuit board. The light guide plate is disposed between the circuit board and the light-shielding plate and includes first and second single-key light guide areas. The first and second single-key light guide areas respectively have first and second through holes respectively accommodating the first and second light-emitting units. A distance between the geometric center of the first single-key light guide area and that of the light guide plate is greater than a distance between the geometric center of the second single-key light guide area and that of the light guide plate. A current flowing through the first light-emitting unit is greater than a current flowing through the second light-emitting unit.

A backlight unit is described. The unit includes a light emitting array having a plurality of light sources configured to emit light, and a printed circuit board on which the light sources are arranged; a light guide film configured to guide light emitted from the light sources in one direction; a color conversion layer configured to convert light that has passed through the light guide film into light of a specific color; and an optical member disposed on the color conversion layer. The light sources include first light sources arranged on a first row of the printed circuit board, and second light sources arranged on a second row of the printed circuit board. The first light sources are spaced apart from each other by a predetermined distance, and the second light sources are spaced apart from each other by the predetermined distance.

The present application discloses a backlight module and a display device. The backlight module includes a plurality of first regions and a plurality of second regions arranged adjacently; the backlight module includes a substrate, including a light-transmitting region, in which the light-transmitting region is at least partially located in the second regions; a plurality of first light-emitting elements, arranged at a side of the substrate, in which the first light-emitting elements are located in the first regions, and the first light-emitting elements emit light along a direction perpendicular to a plane where the substrate is located; a light-guiding plate, arranged at a side of the substrate away from the first light-emitting elements, in which the light-guiding plate includes a plurality of light-supplementing portions located in the second regions; and at least one second light-emitting element, arranged at a side face of the light-guiding plate.

An integrated optically functional multilayer structure includes a flexible, substrate film arranged with a circuit design including at least a number of electrical conductors on the substrate film; and a plurality of top-emitting, bottom-installed light sources provided upon a first side of the substrate film to internally illuminate at least portion of the structure for external perception via associated outcoupling areas, wherein for each light source of the plurality of light sources there is optically transmissive plastic layer, produced upon the first side of the substrate film, said plastic layer at least laterally surrounding the light source, the substrate film at least having a similar or lower refractive index therewith; and reflector design including at least one material layer, provided at least upon the light source and configured to reflect the light emitted by the light source and incident upon the reflective layer towards the plastic layer.