Abstract:
A light source is provided including a heat sink and a printed circuit board (PCB) with a driver and lamps disposed in the central cavity of the heat sink. Each lamp is a semi-spherical solid state lamp, and multiple optical structures in operable registration with lamps. The PCB may further have two heat conducting strips proximate opposing edges of the PCB. The optical structures emit substantially shadowless, substantially homogeneous, and substantially monochromatic light. The optical structure includes an optical element for each lamp that substantially collimates the lamp's light and an optical element receiving a portion of the substantially collimated beam and provides multiple optical images of the collimated beam with a focal point that is practically infinite.