Photoelectric coupling module capable of packaging firmly

摘要

A photoelectric coupling module includes a substrate, a photoelectric unit, and a lens module. The substrate defines a positioning recess. The photoelectric unit is positioned on the substrate. The lens module includes a reflection surface, a plurality of first lenses, and a plurality of second lens. Optical axes of the first lenses cross optical axes of the second lenses on the reflection surface. The lens module further includes a positioning portion extending downward from a bottom surface, and the positioning portion is received in the positioning recess. The first lenses are aligned with the photoelectric unit.

主权项

1. A photoelectric coupling module, comprising:
a substrate comprising a bearing surface, and further comprising two opposite sidewalls positioned in the bearing surface and a bottom wall positioned below the bearing surface and coupling the two opposite sidewalls, and defining a positioning recess formed by the two opposite sidewalls and the bottom wall in the bearing surface; a photoelectric unit positioned on the bearing surface; and a lens module comprising a top surface, a bottom surface opposite to the top surface, and a side surface connected between the top surface and the bottom surface; the lens module defining a first recess on the top surface, the first recess comprising a reflection surface tilting about 45 degrees relative to the bearing surface; the lens module comprising a plurality of first lenses formed on the bottom surface, a positioning portion extending downward from the bottom surface, and a plurality of second lenses formed on the side surface; optical axes of the first lenses crossing optical axes of the second lenses on the reflection surface; the positioning portion received in the positioning recess and glued to the bottom wall by glue; the first lenses aligned with the photoelectric unit; wherein a thickness of the positioning portion is slightly less than a width of the positioning recess, the positioning portion contacts at least one of the two opposite sidewalls fully to prevent the positioning portion from slipping out the positioning recess.