Abstract: A digital display screen having an image displaying element and a backlighting device configured to backlight the image displaying element. The backlighting device defines a plurality of lighting zones, each lighting zone comprising one light source controllable to adjust the lighting intensity generated by the lighting zone. The lighting zones include at least one first lighting zone defining a first lighting surface having a first area and at least one second lighting zone defining a second lighting surface having a second area, the second area being strictly smaller than the first area.

Abstract: A digital display screen having an image displaying element and a backlighting device configured to backlight the image displaying element. The backlighting device defines a plurality of lighting zones, each lighting zone comprising one light source controllable to adjust the lighting intensity generated by the lighting zone. The lighting zones include at least one first lighting zone defining a first lighting surface having a first area and at least one second lighting zone defining a second lighting surface having a second area, the second area being strictly smaller than the first area.

Abstract: A modular light panel includes a transparent base substrate, an array of light sources, at least one environment sensor unit mounted on the base substrate, and a transparent protecting layer encapsulating the light sources and the environment sensor unit(s). The refractive index of the transparent protecting layer is equal or less than that of the base substrate. The modular light panel might also include a wireless communication module.

Abstract: A modular light panel is described that comprises a transparent base substrate, upon a first surface of which is mounted an array of light sources, and a transparent protecting layer arranged to encapsulate the light sources upon the first surface. The refractive index of these layers is such that they form a composite structure for guiding light produced by the light sources within the composite structure. The modular light panel also comprise a wireless communication module and or environment sensor units located on the first surface to measure one or more physical properties of a volume illuminated by the light sources. The modular light panel exhibits increased levels of light output, are easier to manufacture than known devices while offering increased functionality. In addition, they remove the need for separate dedicated environment sensor units to be employed in a room while providing a means for thermally mapping the room.