Modular heat sinks
First Claim
1. An opto-electronic device of the type for transmitting signals between an optical waveguide and a host computer comprising:
- an optical sub-assembly for converting optical signals into electrical signals or electrical signals into optical signals;
a thermally conductive housing for supporting the optical sub-assembly;
an optical connector on one end of said housing for receiving the optical waveguide, and for aligning the optical waveguide with the optical sub-assembly;
a printed circuit board mounted in said housing including circuitry for controlling the optical sub-assembly, the printed circuit board including a first heat source; and
an electrical connector extending from another end of said housing for transmitting electrical signals between the printed circuit board and the host computer;
wherein the housing includes;
a lower portion for supporting the optical sub-assembly and the printed circuit board;
a heat dissipating cover fixed on top of the lower portion for dissipating heat from inside the housing; and
a first heat sink mounted on the heat dissipating cover above the first heat source for dissipating heat therefrom;
wherein the heat dissipating cover and/or the first heat sink enclose and seal the housing to prevent leakage of electro-magnetic interference (EMI) from the housing.
6 Assignments
0 Petitions
Accused Products
Abstract
The invention relates. to modular heat-dissipating housing covers for opto-electronic modules, e.g. transceivers. The housing covers according to the present invention are constructed out of various different parts, which provide different levels of heat dissipation depending on the desired implementation, while maintaining a seal against EMI leakage. Extra heat sinking portions are provided to dissipate heat generated from specific heat generating sources. The extra heat sinking portions are configured into a shape and/or out of a material that provides more thermal dissipation than the standard cover provided. Independent control over the different heat sinking portions enables a better fit and appropriate dissipation
53 Citations
19 Claims
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1. An opto-electronic device of the type for transmitting signals between an optical waveguide and a host computer comprising:
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an optical sub-assembly for converting optical signals into electrical signals or electrical signals into optical signals;
a thermally conductive housing for supporting the optical sub-assembly;
an optical connector on one end of said housing for receiving the optical waveguide, and for aligning the optical waveguide with the optical sub-assembly;
a printed circuit board mounted in said housing including circuitry for controlling the optical sub-assembly, the printed circuit board including a first heat source; and
an electrical connector extending from another end of said housing for transmitting electrical signals between the printed circuit board and the host computer;
wherein the housing includes;
a lower portion for supporting the optical sub-assembly and the printed circuit board;
a heat dissipating cover fixed on top of the lower portion for dissipating heat from inside the housing; and
a first heat sink mounted on the heat dissipating cover above the first heat source for dissipating heat therefrom;
wherein the heat dissipating cover and/or the first heat sink enclose and seal the housing to prevent leakage of electro-magnetic interference (EMI) from the housing. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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2. The device according to clam 1, wherein the heat dissipating cover is made of a first material, and the first heat sink is made of a second material, which is more thermally conductive than the first material.
Specification