Flexible LED substrate capable of being formed into a concave LED light source, concave light sources so formed and methods of so forming concave LED light sources

摘要

An illumination source is made from number of light emitting diodes (LEDs) which are distributed on a substrate that is formed into a generally concave reflector surface. The substrate may initially be a sheet with a hub-and-spokes form that is subsequently reshaped to define the reflector surface. In some cases a plenum defined between the substrate and a housing is used to allow a coolant to circulate past the substrate.