Patent ID: 6824294
Filing Date: 2004-11-30
Classification: A61C,A61N,B23K

Abstract:
A light for activating a light-activated material comprising:a light module capable of emitting light useful in activating a light-activated material, a primary heat sink in said light module, said primary heat sink having heat conductance qualities, a gross well in said primary heat sink, said gross well having a generally flat bottom, said gross well having an angled side wall, said angled side wall being capable of reflecting light, a plurality of semiconductor chips being located in said gross heat sink, at least some of said semiconductor chips being capable of emitting light of a wavelength that is useful in activating a light activated material, said semiconductor chips being affixed to said gross well flat bottom by use of a thermally conductive and electrically insulative adhesive, a dome over said gross well and covering said chips, said dome serving to prevent contamination of said chips by exposure of said chips to dirt, said dome serving to prevent mechanical damage to said chips, and said dome being constructed at least in part of a material that is translucent to light of the wavelength(s) emitted by said chips; wherein at least some light emitted from said chips that strikes said well wall and is reflected by said well wall in a direction where it may be used to activate a light-activated material.