Passive alignment packaging structure for opto-electrical devices and optic fiber connectors

摘要

A passive alignment packaging structure for opto-electrical devices and optic fiber connectors provides a passive alignment packaging structure for opto-electrical devices and optic fiber connectors. The passive alignment packaging is of great benefit to automatic assembly in lowering the manufacturing cost and satisfying the requirement of a precisely aligned optical path. The invention connects the silicon substrate for installing an opto-electrical device to a leadframe by soldering. The surface tension of the melted soldering tin helps self-alignment in the horizontal direction. A guiding pin penetrates through the leadframe and the through hole of a lens support for installing a micro lens set to have vertical alignment. The opto-electrical device, the micro lens set, and the optic fiber connector are thus precisely aligned. The leadframe and the through hole on the lens support have alignment and stress relaxation designs to reduce deformation. It can prevent stress from accumulating on the guiding pin and the opto-electrical device due to thermal expansion. The invention can therefore increase the yield and reliability.