Proposed is a light source comprising first and second LED light sources. Each of the first and second LED light sources have: a semiconductor diode structure adapted to generate light; and a light output section above the semiconductor diode structure adapted to output light from the semiconductor diode structure in a light output direction, the area of the light output section being less than the area of the semiconductor diode structure. The second LED light source is arranged above and at least partially overlapping the first LED light source with non-aligned light output sections with respect to the light output direction.

A light system that includes one or more lighting sheets including a first lighting sheet, wherein the first lighting sheet includes a first plurality of LEDs arranged on a grid of intersecting rows and columns of electrical conductors on an insulating substrate, wherein the first plurality of LEDs emit light having a first color spectrum, wherein the first lighting sheet includes a plurality of holes through the insulating substrate of the first lighting sheet, wherein each one of the plurality of holes through the insulating substrate of the first lighting sheet is positioned between an adjacent pair of rows of electrical conductors and between an adjacent pair of columns of electrical conductors of the first lighting sheet; and an acoustic tile, wherein the first lighting sheet is mounted to the acoustic tile. Some embodiments include a plurality of layered light sheets, optionally individually controlled for color and/or brightness.

An LED illumination apparatus includes a substrate, a light source disposed on the substrate, a cover unit covering the light source, and a reflector extending from the inside of the cover unit to the upper surface of the substrate, such that light generated by the light source illuminates an area below a bottom surface of the substrate.

An LED illumination apparatus includes a substrate, a light source disposed on a top side of the substrate, a cover unit configured to cover the light source, and a reflector configured to extend from inside the cover unit towards the upper substrate, such that light generated by the light source illuminates an area below a bottom side of the substrate.

A lamp unit may be provided that includes: a first substrate; a second substrate disposed on the first substrate; and a plurality of light sources disposed on the second substrate, wherein at least two light source arrays are provided, in each of which a plurality of the light sources are disposed in a row, wherein at least a first light source array and a second light source array among the light source arrays are individually driven, wherein the second substrate comprises an upper surface including a first surface on which the first light source array is disposed and a second surface on which the second light source array, and wherein the first surface is higher than the second surface.

The present invention relates to an illumination device comprising a number of light sources generating light and a number of light collecting means adapted to collect the generated light and to convert the collected light into a number of light beams that propagate along an optical axis. The light sources are arranged in a first group and second group of light sources which are individually controllable. The light collecting means and light sources are displaceable in relation to each other between a first position where the light collecting means collect light from the first group of light sources and convert the collected light into a number of first light beams, and a second position where the light collecting means collect light from the second group of light sources and convert the collected light from the second group of light sources into number of second light beams.

Provided is a light-emitting device in which a light-emitting region is increased in size without decreasing the yield. This light-emitting device includes a central light-emitting unit, and a plurality of peripheral light-emitting units arranged to fill a periphery of the central light-emitting unit, wherein each of the central light-emitting unit and the peripheral light-emitting units includes a substrate and light-emitting elements mounted on the substrate, and an area of the light-emitting region of each of the peripheral light-emitting units is equal to or smaller than an area of the light-emitting region of the central light-emitting unit.

The present invention relates to an illumination device comprising a number of light sources generating light and a number of light collecting means adapted to collect the generated light and to convert the collected light into a number of light beams that propagate along an optical axis. The light sources are arranged in a first group and second group of light sources which are individually controllable. The light collecting means and light sources are displaceable in relation to each other between a first position where the light collecting means collect light from the first group of light sources and convert the collected light into a number of first light beams, and a second position where the light collecting means collect light from the second group of light sources and convert the collected light from the second group of light sources into number of second light beams.

Proposed is a light source comprising first and second LED light sources. Each of the first and second LED light sources have: a semiconductor diode structure adapted to generate light; and a light output section above the semiconductor diode structure adapted to output light from the semiconductor diode structure in a light output direction, the area of the light output section being less than the area of the semiconductor diode structure. The second LED light source is arranged above and at least partially overlapping the first LED light source with non-aligned light output sections with respect to the light output direction.

An aircraft LED light unit is disclosed that includes a flat electric circuit device having a first main surface, a second main surface and at least one side surface extending between the first main surface and the second main surface, power supply circuitry, disposed in the electric circuit device, at least one heat transport element, disposed in the electric circuit device, and at least one LED. The at least one LED is arranged on the at least one side surface of the electric circuit device, is electrically coupled to the power supply circuitry, and is in heat exchange relationship with the at least one heat transport element.