An innovative moulded clear polycarbonate optical unit allows to drive the flow emitted by the LED source towards the output section, thus generating broad luminous beams (2x35°) with very high yields (approximately 80%) and a mild light scattering effect. The special geometry of the reflector is made up of an external layer of 90° prisms reflecting light rays, while the micro-lenses on the inner surface provide for even distribution of light within the desired angles.