Patent ID: 7766489

Claim:
A lighting device for projecting a pixelated lighting pattern to be viewed onto a surface facing said device, comprising: a plurality of lighting units, each lighting unit having at least one light-emitting diode, and a controller for controlling the emission of light from said lighting units, wherein said lighting units being independently controllable by said controller and each light-emitting diode being responsible for a limited pattern area portion illumination; wherein said lighting units have at least a first independently controllable light-emitting diode of a first color and a second independently controllable light-emitting diode of a second color; wherein said light-emitting diodes are arranged to emit light at a collimation angle of less than about 20°; wherein each light-emitting diode of said lighting units has a separate collimator arranged to receive light emitted by each of said light-emitting diodes and to collimate and project at least part of said received light as a separate light beam; wherein each of said collimators is a low profile collimator having a light exit aperture on opposing first and a second sides of said light-emitting diode, said collimator for each of said light-emitting diodes being a substantially flat collimator.