Optical semiconductor module

Claim 1

An optical semiconductor module which is connected to an optical cable to introduce laser light from a semiconductor light-emitting device into said optical cable, comprising: a holder which holds said semiconductor light-emitting device; a housing which has a rod lens positioned therein and to which said holder is connected by fitting engagement that is made between one end of said housing and one end of said holder such that the optical axis of said semiconductor light-emitting device and the optical axis of said rod lens coincide with each other; and a connecting member to which said optical cable is connected, said connecting member being connected to the other end of said housing adjustably within a plane which perpendicularly intersects the optical axis of said optical cable and is defined at the abutment between facing walls of said respective housing and connecting member such that laser light from said semiconductor light-emitting device that passes through said rod lens enters said optical cable, said holder, housing and connecting member being formed with substantially like diameter outer cylindrical walls; and first and second weld means, said first weld means providing retention of said holder and housing in said fitting engagement, said second weld means formed at the intersection of the abutment between the housing and connecting member and the substantially like diameter respective outer cylindrical walls of the housing and connecting member.

Claim 8

A method of aligning the respective optical axes of a semiconductor element and an optical cable element of an optical semiconductor module, comprising the steps of: providing a housing having a first cylindrical end thereof and a second end, said housing including a rod lens positioned therein; providing a holder having a first cylindrical end thereof and a second end, said holder including a semiconductor light-emitting device positioned therein; engaging the first cylindrical end of the housing with the first cylindrical end of the holder; positionally adjusting said first end of the housing and the holder in the direction of the optical axis of the rod lens and semiconductor device; welding the first end of the housing and the holder together; providing a connecting member for supporting an optical cable; positionally adjusting the connecting member and the second end of the housing in a direction perpendicular to the optical axis of the optical cable along the junction plane that is defined between the connecting member and housing; welding the second end of the housing to the connecting member.

Claim 9

A method of aligning the respective optical axes of a semiconductor element and an optical cable element of an optical semiconductor module, comprising the steps of: providing a housing having a first cylindrical end thereof and a second end, said housing including a rod lens positioned therein; providing a holder having a first cylindrical end thereof and a second end, said holder including a semiconductor light-emitting device positioned therein; engaging the first cylindrical end of the housing with the first cylindrical end of the holder; positionally adjusting said first end of the housing and the holder in the direction of the optical axis of the rod lens and semiconductor device; welding the first end of the housing and the holder together; providing a connecting member for supporting an optical cable; positionally adjusting the connecting member and the second end of the housing in a direction perpendicular to the optical axis of the optical cable along the junction plane that is defined between the connecting member and housing; welding the second end of the housing to the connecting member.