Optical transmission module and electronic device

Abstract

An optical transmission module has a light-emitting element, a light-receiving element, and an optical path for optically coupling the light-emitting element and the light-receiving element, and transmitting a optical signal. The optical path has a core part, a clad part surrounding the core part, and a support board for supporting the optical path itself and the light-receiving element. A resin part formed of resin having a refractive index higher than air outside the optical path is arranged at a part of a surface area of the clad part along an optical transmission direction to which optical signals are transmitted. The resin part has an inclined surface in which the surface on the opposite side of the clad part is tilted relative to the optical transmission direction. The inclined surface forms an acute angle with the surface of the clad part at the opposite side of the light-receiving element in the resin part.

Dependencies are inferred from the claim text.