Abstract: A GRIN lens array of an embodiment has a structure for enabling a coupling face in which lens end faces of GRIN lenses are arranged, to be accurately polished so as to have a desired angle relative to optical axes of the GRIN lenses. The GRIN lens array has the GRIN lenses and a main body portion. The main body portion comprises a holding portion having a coupling face, and an edge portion having a reference face to be used as a reference in polishing of the coupling face. The respective thicknesses of the holding portion and the edge portion along the longitudinal direction of the GRIN lenses are set so as to form a step between the coupling face and the reference face.

Abstract: An adapter includes an optical connector accommodation part having a first cavity in which a first optical connector having a first front end portion is to be accommodated, and a second cavity in which a second optical connector having a second front end portion is to be accommodated, and a spacer having a first surface configured to contact the first front end portion, a second surface configured to contact the second front end portion, and a light transmission part configured to enable a light beam to pass therethrough. The spacer being arranged between the first cavity and the second cavity. At a state where the first front end portion is contacted to the first surface and the second front end portion is contacted to the second surface, the first optical interface part and the second optical interface part face each other at a predetermined interval.

Abstract: A lens component has a element-side lens portion 65 which is provided so as to face a light emitting and receiving element 52 mounted on a circuit substrate 24, a positioning portion 75 that protrudes such that the element-side lens portion 65 is separated from the circuit substrate 24 by a predetermined distance, and an adhesion portion 76 that forms an adhesive-agent filling space S, which is filled with an adhesive agent 77, between the circuit substrate 24 and the adhesion portion 26, in a state where the positioning portion 75 contacts with the circuit substrate 24 and the element-side lens portion 65 is fixed so as to face the light emitting and receiving element 52.

Abstract: A lens component has a element-side lens portion 65 which is provided so as to face a light emitting and receiving element 52 mounted on a circuit substrate 24, a positioning portion 75 that protrudes such that the element-side lens portion 65 is separated from the circuit substrate 24 by a predetermined distance, and an adhesion portion 76 that forms an adhesive-agent filling space S, which is filled with an adhesive agent 77, between the circuit substrate 24 and the adhesion portion 26, in a state where the positioning portion 75 contacts with the circuit substrate 24 and the element-side lens portion 65 is fixed so as to face the light emitting and receiving element 52.

Abstract: An optical connector to which an optical fiber cord including an optical fiber ribbon and a sheath is to be attached includes: a ferrule member a fusion splice protection sleeve, housing and a fixing member. The ferrule member holds a plurality of embedded fibers which are to be fusion-spliced respectively to a plurality of optical fibers constituting the optical fiber ribbon. The fusion splice protection sleeve protects a fusion-spliced portion. The housing houses the ferrule member and the fusion splice protection sleeve. The housing has, at the rear end, a recess for receiving a bifurcated portion of the sheath. The fixing member fixes the sheath to the housings and by holding it.

Abstract: An optical connector to which an optical fiber cord including an optical fiber ribbon and a sheath is to be attached includes: a ferrule member a fusion splice protection sleeve, housing and a fixing member. The ferrule member holds holding a plurality of embedded fibers which are to be fusion-spliced respectively to a plurality of optical fibers constituting the optical fiber ribbon. The fusion splice protection sleeve protects a fusion-spliced portion. The housing houses the ferrule member and the fusion splice protection sleeve. The housing has, at the rear end, a recess for receiving a bifurcated portion of the sheath. The fixing member for fixing fixes the sheath to the housings and by holding it.

Abstract: An outlet device, which is to be arranged on a wall surface, includes an outlet box in which electric wiring and optical interconnection are to be accommodated, and a cover plate which covers the outlet box. The cover plate includes a plate surface formed with an opening section through which an electric connection port of at least one of a telephone jack and an electric power supply outlet is to be exposed, and a bulged portion formed, on left or right side of the plate surface, to bulge frontward from the plate surface. The bulged portion is operable to accommodate a connection adaptor to which an optical connector attached directly to an end portion of an optical fiber is fitted, and includes a bottom face formed with an opening through which an optical connection port of the connection adaptor is to be exposed so as to be oriented downward.

Abstract: An outlet device, which is to be arranged on a wall surface, includes an outlet box in which electric wiring and optical interconnection are to be accommodated, and a cover plate which covers the outlet box. The cover plate includes a plate surface formed with an opening section through which an electric connection port of at least one of a telephone jack and an electric power supply outlet is to be exposed, and a bulged portion formed, on left or right side of the plate surface, to bulge frontward from the plate surface. The bulged portion is operable to accommodate a connection adaptor to which an optical connector attached directly to an end portion of an optical fiber is fitted, and includes a bottom face formed with an opening through which an optical connection port of the connection adaptor is to be exposed so as to be oriented downward.