Patent ID: 6974263

Claim:
The optical data link comprising: a mounting member having a substrate with a plurality of holes, and a plurality of electronic conductive pins passing through said plurality of holes of said substrate; a circuit board having a pair of surfaces with an electrically conductive layer connected to at least one pin of said plurality of electrically conductive pins, each of said pair of surfaces mounting an electronic component; an optical element assembly, mounted on said mounting member, including a semiconductor optical element connected to said electrically conductive layer provided on said circuit board; means for supporting said circuit board so as to be spaced apart from said mounting member; an electrically conductive cover covering said circuit board; a semiconductor chip mounted on said circuit board; an electrically insulating protection member covering said semiconductor chip; and a heat transfer part provided so as to contact said protection member and said electrically conductive cover; wherein said semiconductor chip is provided between said circuit board and said electrically conductive cover.