Patent ID: 7677765
Filing Date: 2010-03-16
Classification: H01L,Y10S

Abstract:
1. A light emitting device having an hermetically-sealed package (“LED-HSP”) for heat dissipation, the light emitting device comprising: a metal can having an interior surface and an open top; a metal base having a concave base cavity connected to said metal can; a semiconductor radiation source positioned in the concave base cavity of said metal base; an optically-transparent cover that covers the open top of the metal can and forms the hermetically-sealed package with the metal can, the hermetically sealed package forming an enclosed space above the metal base; a light pipe assembly positioned between the optically-transparent cover and the semiconductor radiation source, configured to transmit emitted light from the semiconductor radiation source to the optically-transparent cover; and a heat-conducting material comprising an inert gas or liquid material that fills the enclosed space of the hermetically-sealed package between the interior surface of the metal can and the light pipe assembly.