Patent ID: 11864354
Assignee: FUJITSU OPTICAL COMPONENTS LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An optical communication module comprising:
a circuit board;
optical communication devices that are provided on an upper surface side of the circuit board;
a case that accommodates the circuit board and the optical communication devices; and
a heatsink that is attached to the case,
wherein
the optical communication devices include a first device and a second device,
the first device is located closer to an inlet opening for cooling air for cooling the heatsink than the second device is,
a height from the circuit board to a top of the first device is greater than a height from the circuit board to a top of the second device,
the heatsink is not equipped with a cooling fin in a first region where the first device is provided, and the heatsink is equipped with a cooling fin in a second region where the second device is provided, and
the cooling air is provided through the inlet opening and flows in a direction from the first region where the first device is implemented to the second region where the second device is implemented in the case.