| 摘要 |
This invention reduces the distance between a light transmission path (2) and an optical element (3), and suppresses the optical loss in the optical coupling between the light transmission path (2) and optical element (3). A light transmission module (1) includes a light transmission path (2) for transmitting light; an optical element (3) including a light emitting and receiving surface that optically couples with the light transmitted by the light transmission path (2), and including a light emitting and receiving point (3a) with a function of photoelectric conversion and an electrode pad (3b) formed on the light emitting and receiving surface; a substrate (6) supporting the light emitting and receiving element and an electricalwiring (5); a bonding wiring (7) for electrically connecting the electrode pad (3b) and the electrical wiring (5); and a sealing resin portion (8) for sealing the optical element (3). The electrical wiring (5) and the electrode pad (3b) are reverse wire-bonded by the bonding wiring (7); and the sealing resin portion (8) includes an inclined part (8a) where a liquid sealing resin material is raised and solidified along a side wall of the optical element (3) by surface tension, and a flat part (8b) where the liquid sealing resin material is spread in parallel and solidified along the light emitting and receiving surface, the inclined part (8a) and the flat part (8b) being coupled together. |
