Patent ID: 7367718

Claim:
An optical module comprising: an optical sub-assembly including an opto-electronic device; a first circuit board electrically connected to the optical sub-assembly; an electronic device mounted on the first circuit board; a lower housing for mounting the first circuit board; an upper housing disposed so as to cover the first circuit board and electronic device; thermal sheets disposed between the electronic device and the upper housing, and between the optical sub-assembly and the upper housing; and a metal cover for covering the upper housing; wherein the thermal sheet disposed between the electronic device and the upper housing forms a first heat-dissipating path for dissipating heat from the electronic device to the cover via the upper housing; and wherein the thermal sheet disposed between the optical sub-assembly and the upper housing forms a second heat-dissipating path, different from the first heat-dissipating path, for dissipating heat from the optical sub-assembly to the cover byway of the upper housing.