Abstract: An optical connector is disclosed. The optical connector includes an optical fiber, a ferrule that holds the optical fiber, the ferrule having a flat ferrule end surface facing a counterpart optical connector, and a spacer provided on the ferrule end surface so as to define a clearance between the ferrule end surface and the counterpart optical connector. A tip surface of the optical fiber is exposed at the ferrule end surface. Respective normal directions to the tip surface of the optical fiber and the ferrule end surface are inclined with respect to an optical-axis direction of the optical fiber in a section along an optical axis of the optical fiber. The spacer includes an opening configured to allow an optical path extending from the tip surface of the optical fiber to pass therethrough.

Abstract: A receptacle connector comprises a receptacle ferrule, and a receptacle housing including a cavity housing the receptacle ferrule and a cavity housing a plug connector. The receptacle ferrule includes an optical coupling surface (front surface). An opening area of the cavity on a cross section vertical to an inserting direction of the plug connector to the receptacle housing is smaller than an opening area of the cavity on the cross section vertical to the inserting direction. In a second state after being optically coupled, the optical coupling surface (front surface) is positioned inside the cavity.

Abstract: A receptacle connector includes a receptacle ferrule, a receptacle housing and a spacer. The receptacle ferrule has a first front end portion having a receptacle interface part In the receptacle housing, the receptacle ferrule and a plug connector having a second front end portion having a plug interface part configured to be optically coupled with the receptacle interface part are to be accommodated. The spacer has a first surface configured to contact the first front end portion, and a second surface configured to contact the second front end portion. The spacer is arranged in the receptacle housing. At a state where the first front end portion is contacted to the first surface of the spacer and the second front end portion is contacted to the second surface of the spacer, the receptacle interface part and the plug interface part face each other at a predetermined interval.

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 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: A receptacle connector includes a receptacle ferrule, a receptacle housing and a spacer. The receptacle ferrule has a first front end portion having a receptacle interface part In the receptacle housing, the receptacle ferrule and a plug connector having a second front end portion having a plug interface part configured to be optically coupled with the receptacle interface part are to be accommodated. The spacer has a first surface configured to contact the first front end portion, and a second surface configured to contact the second front end portion. The spacer is arranged in the receptacle housing. At a state where the first front end portion is contacted to the first surface of the spacer and the second front end portion is contacted to the second surface of the spacer, the receptacle interface part and the plug interface part face each other at a predetermined interval.

Abstract: An optical connection structure comprising: a substrate including a main surface and an optical waveguide in which a beam is incident or emitted in a direction intersecting with the main surface; a receptacle including a first lens and a connector guide and disposed on the substrate such that the first lens and the optical waveguide are optically coupled; and an optical connector including a second lens and a guide unit and holding an optical fiber so as to be optically coupled with the second lens, wherein: the receptacle and the optical connector are configured to be detachably through the connector guide and the guide unit; and the first lens and the second lens are optically coupled by mounting the optical connector to the receptacle.

Abstract: A ferrule 10 includes holding holes 16, a light incidence/emission plane 21 to pass light entering or emitted from optical fibers F2 respectively held at the holding holes 16, lenses 31 disposed on an optical axes between the respective holding holes 16 and the light incidence/emission plane 21, and two or more guide portions. A second optical axis L2 between the light incidence/emission plane 21 and the ferrule 10 on the other side is inclined relative to a Z direction. A positional relation between the guide portions is 180-degree rotationally symmetric around a reference axial line extending in the Z direction. The lenses 31 is disposed disproportionately in a direction opposite to an inclination direction of the second optical axis L2 from a position line-symmetric relative to a straight line crossing with the reference axial line and parallel to an X direction.

Abstract: An optical module (1) of the invention includes a circuit substrate (24) on which light receiving and emitting elements (52) are mounted, a connector component (54) for holding optical fibers (7), and a lens array component (55) which is fixed on the circuit substrate (24) and optically connects the optical fibers (7) to the light receiving and emitting elements (52) on the circuit substrate (24), and the circuit substrate (24) has a lens array mounting region (A1) in which the lens array component (55) is fixed and a connector component opposed region (A2) opposed to the connector component (54), and thermal insulation space is formed between the connector component (54) and the connector component opposed region (A2).

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 ferrule 10 includes holding holes 16, a light incidence/emission plane 21 to pass light entering or emitted from optical fibers F2 respectively held at the holding holes 16, lenses 31 disposed on an optical axes between the respective holding holes 16 and the light incidence/emission plane 21, and two or more guide portions. A second optical axis L2 between the light incidence/emission plane 21 and the ferrule 10 on the other side is inclined relative to a Z direction. A positional relation between the guide portions is 180-degree rotationally symmetric around a reference axial line extending in the Z direction. The lenses 31 is disposed disproportionately in a direction opposite to an inclination direction of the second optical axis L2 from a position line-symmetric relative to a straight line crossing with the reference axial line and parallel to an X direction.

Abstract: An optical connector 1 includes a plurality of light incidence/emission portions 10 and a ferrule 20. Each of the plurality of light incidence/emission portions 10 includes a waveguide member 11 having a first optical axis L1, and a GRIN lens 12 including a second optical axis L2, and has one end 12a connected to an end portion 11a of the waveguide member 11 and the other end 12b provided with an incidence/emission plane 10a. The second optical axis L2 is offset relative to the first optical axis L1 at the end portion 11a of the waveguide member 11. The incidence/emission plane 10a is orthogonal to neither an optical axis of an optical beam emitted from the incidence/emission plane 10a nor an optical axis of an optical beam entering the incidence/emission plane 10a. The ferrule 20 includes guide portions 25, 26.

Abstract: An optical cable terminal fixture of the invention capable of increasing a fixing force of an optical cable and also simplifying swage operation, a terminal fixing structure of the optical cable, and an optical module. An optical cable terminal fixture includes a body having an outer sheath fixing part for fixing an outer sheath and a cable insertion path into which optical fibers are inserted, and a wind part having a wind claw on a lateral portion of the body around which a tensile strength wire is wound. Accordingly, by swaging the wind claw on which the tensile strength wire is wound to the outer sheath fixing part, a tensile force applied to an optical cable can be distributed to become resistant to tension.

Abstract: The electronic device with cable includes a circuit substrate provided with a heat generating element mounted thereon, an electrical connector connected to one end of the circuit substrate, a cable that is connected to the other end of the circuit substrate, heat conducting sheets and disposed in the circuit substrate, a first metal housing including an accommodation portion accommodating the electrical connector and a pair of wall portions communicating with the accommodation portion, a second metal housing fitted to the first metal housing so as to cover a one-side opening of the pair of wall portions, and a third metal housing fitted to the second metal housing so as to cover the other-side opening of the pair of wall portions. The cable and the first metal housing are thermally connected to each other.

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 connection structure comprising: a substrate including a main surface and an optical waveguide in which a beam is incident or emitted in a direction intersecting with the main surface; a receptacle including a first lens and a connector guide and disposed on the substrate such that the first lens and the optical waveguide are optically coupled; and an optical connector including a second lens and a guide unit and holding an optical fiber so as to be optically coupled with the second lens, wherein: the receptacle and the optical connector are configured to be detachably through the connector guide and the guide unit; and the first lens and the second lens are optically coupled by mounting the optical connector to the receptacle.

Abstract: A connector assembly capable of efficiently dissipating heat is provided. The connector assembly includes: an optical cable; and a connector module, and the optical cable includes an optical fiber core wire, an outer cover provided around the optical fiber core wire, and a metallic braid provided between the optical fiber core wire and the outer cover, and the connector module includes a housing defining a space, and a circuit board received in the space of the housing and mounted with a photoelectric conversion unit connected with the optical fiber core wire, and the metallic braid of the optical cable and the circuit board of the connector module are thermally connected to each other.

Abstract: The electronic device with cable includes a circuit substrate provided with a heat generating element mounted thereon, an electrical connector connected to one end of the circuit substrate, a cable that is connected to the other end of the circuit substrate, heat conducting sheets and disposed in the circuit substrate, a first metal housing including an accommodation portion accommodating the electrical connector and a pair of wall portions communicating with the accommodation portion, a second metal housing fitted to the first metal housing so as to cover a one-side opening of the pair of wall portions, and a third metal housing fitted to the second metal housing so as to cover the other-side opening of the pair of wall portions. The cable and the first metal housing are thermally connected to each other.

Abstract: As only either of light emitting side wirings and light receiving side wirings crossover each other, the same connectors 30 may be mounted at opposite ends of an optical fiber. Thus, it is possible to provide an optical connector module at low cost. Further, as the optical fiber is connected straight from one side to the other side, an assembly process is easy.