Patent ID: 8508126

Claim:
A solid state directional lighting device, comprising: a semiconductor light source emitting a primary short wavelength light; a light collimation lens disposed in light-reflecting relation to said semiconductor light source to generate a collimated light that follows a path of travel; a luminescent nanocrystal conversion layer disposed in intersecting relation to said collimated light path of travel; said luminescent nanocrystal conversion layer including luminescent nanocrystal particles with nano-particle sizes less than 15 nm; a light engine including said semiconductor light source; a thermally conductive substrate; said semiconductor light source being mounted on said thermally conductive substrate; said light engine including said light collimation lens disposed in light-reflecting relation to said semiconductor light source to generate a collimated light that follows a path of travel; said light engine including said luminescent nanocrystal conversion layer disposed in intersecting relation to said collimated light path of travel; a heat dissipation base attached to said thermally conductive substrate to conduct heat away from said semiconductor light source and dissipate said heat into an ambient environment.