Patent ID: 6974319
Filing Date: 2005-12-13
Classification: A61C,A61N,B23K

Abstract:
1. A curing light comprising: a wand adapted to be grasped by a human hand for use in positioning and manipulating the curing light, a power supply, electronic control circuitry for controlling the curing light, a light module, said light module including an elongate secondary heat sink, said secondary heat sink being configured to assist in heat dissipation, said secondary heat sink having a longitudinal axis, a primary heat sink affixed to said secondary heat sink, at least one light emitting semiconductor chip mounted on said primary heat sink, and means for providing pulsed current input to said chip in a square wave pattern that consists of periods of current input at a level I followed by periods of rest with no current input in order to provide light output at an average light output power level that is greater than the light output power level that would result from providing continuous wave current input to said chip at current input level I; light emitted directly forward from said light emitting semiconductor chip travels away from said chip at an angle of from about 45 degrees to about 135 degrees with said longitudinal axis.