US Patent 7997768 LED lamp

An LED (light emitting diode) lamp includes an upper base plate, a lower base plate spaced from the upper base plate and a plurality of light emitting modules located between the two base plates. The lower base plate defines a plurality of through holes therein. Each light emitting module comprises a heat sink sandwiched between the two base plates, an LED module embedded in a bottom surface of the heat sink and a lens engaging with the bottom surface of the conductive cylinder to enclose the LED module therein. A lower portion of each lens extends downwardly through a corresponding through hole.