HIGH PRECISION ALIGNMENT METHOD AND HIGH PRECISION ALIGNMENT SYSTEM FOR OPTICAL ELEMENT, AND MODULE FOR OPTICAL TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To permit simultaneous alignment of optical elements and other optical components with high accuracy and ease at a low cost in aligning the optical elements, such as light emitting elements and light receiving elements, by a self-alignment method utilizing the surface tension of molten solder onto a mounting substrate configurating a module for optical transmission.

SOLUTION: The self-alignment mounting method for aligning the substrate side electrode pads and optical element side electrode pads by utilizing the surface tension of molten solder balls 10 in joining the electrode pads 6 of the optical elements 5 through the solder balls onto the electrode pads 2 on a substrate 1 surface comprises curing the solder balls after moving the optical elements to an arbitrary direction from the self-alignment positions obtained by the surface tension of the molten solder balls.

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