Optical modules and optical receptacles

Abstract

This provides an optical module that can further reduce reflected light reaching the light-emitting element. [Solution] An optical module comprising an optical transmission body, a photodetector, and an optical receptacle disposed between the optical transmission body and the photodetector for causing received light emitted from the end face of the optical transmission body to be incident on the photodetector, wherein the optical receptacle comprises a first optical section facing the end face of the optical transmission body and a second optical section facing the photodetector, the second optical section includes a second lens surface for focusing received light emitted from the end face of the optical transmission body and incident into the optical receptacle via the first optical section onto the photodetector, the second lens surface is positioned such that the central axis of the second lens surface does not coincide with the optical axis of the received light, and the second optical section further includes a return light suppression region formed in at least a portion of the region into which the return light generated by the reflection of the received light from the photodetector is incident, such that at least a portion of the return light does not reach the first optical section.

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