| abstract |
A lamp ( 10 ) has a concave reflector ( 12 ) that includes an opening ( 14 ) in the bottom thereof and is substantially symmetrically arrayed about a longitudinal axis ( 16 ). A light source ( 18 ) is positioned in the opening ( 14 ) and has a symmetry axis ( 19 ) that is coaxial with the longitudinal axis ( 16 ) of the reflector ( 12 ). The light source ( 18 ) comprises a hollow ceramic member ( 20 ) with an inner surface ( 22 ) and an outer surface ( 24 ). First and second electrically conductive traces ( 26, 28 ) and first and second rows ( 29, 31 ) of first and second electrically conductive pads ( 30, 32 ) connected by the electrically conductive traces ( 26, 28 ) are formed on the outer surface ( 24 ). Light emitting diodes ( 34 ) are associated with at least some of the electrically conductive pads ( 30, 32 ); and a heat-conducting mechanism ( 36 ) is contained within the hollow ceramic member ( 20 ) for removing heat generated by the light emitting diodes ( 34 ) when the light emitting diodes ( 34 ) are operating. |