Patent ID: 9470853
Filing Date: 2016-10-18
CPC Classification: G02B,Y10T

Claim Text:
1. A method of manufacturing an optical transmission module, the optical transmission module being connected to an optical cable, the optical transmission module including a mounting substrate, a photoelectric conversion element provided on the mounting substrate, and a receptacle that optically couples the photoelectric conversion element and the optical cable, the receptacle having a lens provided on a surface that faces the photoelectric conversion element, the method comprising: temporarily disposing the receptacle over the mounting substrate so that the lens and the photoelectric conversion element face each other; measuring, after the temporarily disposing, a position of a light spot at which light emitted from the photoelectric conversion element emerges from an emergence surface of the receptacle; determining a displacement distance between the measured position of the light spot on the emergence surface and a predetermined intersection position on the emergence surface, wherein the predetermined intersection position corresponds to an intersection point between the emergence surface of the receptacle and an optical axis of the optical cable; and adjusting the position of the receptacle over the mounting substrate to thereby cause the measured position of the light spot to move along the displacement distance towards the predetermined intersection position until the measured position of the light spot overlaps with the predetermined intersection position.