A Narrow Beam Reflector for a Two-Dimensional Array of Power Light Emitting Diodes

摘要

A major problem in solid state lighting is the limited flux emitted by a single power light emitter diode (LED). This Jlux is insufficient for most lighting applications. A possible solution is using not one but an array of LEDs as a light source. However, the optical control of the Jlux emitted by such a spatially extended and inhomogeneous light source is difficult, especially if 'a narrow beam of light is desired and the optics have to be compact. In this paper we discuss a compact narrow beam reflector that enables a two dimensional array of power LEDs to act as a light source for spot lighting in domestic and retail lighting.