Patent ID: 8162547

Claim:
An optical subassembly manufacturing method comprising: forming connecting electrodes and a convex piece of first glass on a wiring substrate, the position of the convex piece of first glass being determined relative to respective positions of the connecting electrodes; positioning on and electrically coupling to the connecting electrodes, an optoelectronic converting element; disposing on the piece of first glass, a piece of second glass that has a melting point lower than that of the piece of first glass; and fixing to the piece of second glass, a protruding portion of a lens member further having a lens portion, the protruding portion having a shape matching that of the piece of first glass, and relative positions of the protruding portion and the optical axis of the lens portion being determined to correspond to relative positions of the connecting electrodes and the piece of first glass, wherein the fixing includes fixing the protruding portion of the lens member to the piece of first glass via surface tension generated by melting the piece of second glass.