Abstract: Provides a method and a terminus processing tool whereby terminus processing for the purpose of connection to another optical fiber may be carried out simply. The terminus processing method entails cutting an optical fiber 20 composed of a glass fiber 21 and a coating 24; and with the optical fiber 20 positioned relative to a terminus processing tool that is disposed contacting the coating at the end surface of the optical fiber 20 and that has a protruded-into space for accommodating inward protrusion of the glass fiber 21, and with the cut end surface of the glass fiber 21 facing the protruded-into space, pushing the optical fiber 20 to thereby strip the coating 24 from the glass fiber 21.

Abstract: An optical module is obtained in which a photoelectric converting element can be fixed by a highly reliable resin material while the resin material can be prevented from intruding into an optical path and the transparency of the optical path is ensured. An optical module 100 includes a photoelectric converting element 31, and an optical ferrule 33 in which the photoelectric converting element 31 is equipped on one end face 43, and an optical fiber through hole 45 is passed and formed at a position corresponding to an active layer 39 of the photoelectric converting element 31, a resin material 49 being filled and cured between the photoelectric converting element 31 and the optical ferrule 33, wherein an opening portion 51 of the optical fiber through hole 45 is covered by a transparent substance 53 which is contacted with the active layer 39, and which blocks intrusion of the resin material 49, the opening portion 51 being formed in the one end face 43 of the optical ferrule 33.

Abstract: An optical connector that is capable of ensuring excellent waterproofing using a simple structure is provided. The optical connector comprises a connector plug and socket. Each of the plug and socket have a housing, which has a cable-guiding part and a cable-retaining part; a ferrule disposed within the housing and to hold a leading-end part of an optical fiber exposed from a sheath of an optical cable; and a seal member disposed between the cable-guiding part and the cable-retaining part to seal the cable-guiding part.

Abstract: A method of producing an optical connecting component in which three-dimensional electric wiring can be easily and accurately performed, and the optical connecting component are provided. A positioning projection 58 disposed on a second slide core 56 for positioning a core pin 54 disposed on a first slide core 55 is fitted in a positioning hole 34 disposed in a lead frame 30. The lead frame 30 is disposed in the vicinity of a lead pattern 31, so that the lead pattern 31 can be insert-molded while being positioned in an accurate position with respect to the second slide core 56. Therefore, it is possible to easily perform three-dimensional electric wiring in an accurate position.

Abstract: When a glass fiber and an inner fiber coating layer are to be attached to a connector by removing an outer fiber coating layer while leaving the inner fiber coating layer as it is, a collective coating and the outer fiber coating layer can be removed at a stretch so that the inner fiber coating layer can easily and satisfactorily be exposed. In the ultraviolet curable resin coating layer of a coated optical fiber 17 of an optical fiber ribbon 11 for wiring of equipment, the inner fiber coating layer 15 has a Young's modulus of 600 MPa to 1000 MPa, and the outer fiber coating layer 16 has a Young's modulus of 10 MPa to 300 MPa. The material of the outer fiber coating layer 16 is made by mixing 100 weight parts of base resin, 1-30 weight parts of silicone-based additive, and 0.5 to 40 weight parts of long chain fatty acid ester compound, wherein the base resin is a material made of a urethane metha acrylate oligomer, a mono-functional or multi-functional reactive dilution monomer, and an optical initiator.

Abstract: When a glass fiber and an inner fiber coating layer are to be attached to a connector by removing an outer fiber coating layer while leaving the inner fiber coating layer as it is, a collective coating and the outer fiber coating layer can be removed at a stretch so that the inner fiber coating layer can easily and satisfactorily be exposed. In the ultraviolet curable resin coating layer of a coated optical fiber 17 of an optical fiber ribbon 11 for wiring of equipment, the inner fiber coating layer 15 has a Young's modulus of 600 MPa to 1000 MPa, and the outer fiber coating layer 16 has a Young's modulus of 10 MPa to 300 MPa. The material of the outer fiber coating layer 16 is made by mixing 100 weight parts of base resin, 1-30 weight parts of silicone-based additive, and 0.5 to 40 weight parts of long chain fatty acid ester compound, wherein the base resin is a material made of a urethane metha acrylate oligomer, a mono-functional or multi-functional reactive dilution monomer, and an optical initiator.

Abstract: An object is to obtain a module in which an optical fiber can be inserted after a ferrule has been mounted on a circuit board. There is provided an optical module (100) in which at least a ferrule (33) and an electric component (57) are mounted on a circuit board (35) on which external electrodes (63) have been mounted; a fiber through-hole is formed in the ferrule (33) in a position in which the optoelectric conversion device (31) is mounted on one end surface and that corresponds to an active layer of an optoelectric conversion device (31); and the optoelectric conversion device (31) of the ferrule (33) is electrically connected to the electric component (57). In the ferrule (33), an opening in the one end face of the fiber through-hole that faces the optoelectric conversion device (31) is blocked by a transparent substance (61), and a portion that excludes the fiber through-hole at the other end surface is are monolithically covered with a molding resin (55).

Abstract: A flow of a resin which is injected for insert-molding a wiring plate into an end face of an optical fiber positioning component is regulated by regulating portions disposed in side portions of a die. Therefore, leads of the wiring plate can be prevented from being fixed while remaining to be positionally displaced by the force of the flowing resin. As a result, three-dimensional electrical wirings can be formed easily and correctly.

Abstract: To provide an optical connector that enables the reduction in the number of parts and can be easily attached to an optical cable, a concave portion 18 for a ferrule is formed in a plug housing 6, and a ferrule 3 is inserted from the side of a collar portion 10 into the concave portion 18 for a ferrule. A hook portion 28 for a ferrule is provided in a protruding condition inside the plug housing 6. The collar portion 10 is guided by the hook portion 28 for a ferrule, which has been elastically deformed, and moves toward a bottom surface 26 of the concave portion 18 for a ferrule. Where the collar portion 10 reaches a space between the bottom surface 26 and the hook portion 28 for a ferrule, the hook portion 28 for a ferrule is elastically restored. Therefore, even if the collar portion 10 tries to move toward an opening 24 of the concave portion 18 for a ferrule, the collar portion is locked by the hook portion 28 for a ferrule and the movement is inhibited.

Abstract: The present invention relates to an optical connector and an optical connector assembling method allowing simplification of assembly, improvement of reliability, and lower prices. The optical connector comprises a connector plug for holding a coated optical fiber and a connector socket for holding a coated optical fiber. The connector plug has a fiber holding portion disposed in a plug housing, and a fiber inserting hole is provided in the fiber holding portion. A fiber deflection space for allowing deflection of the coated optical fiber, when the coated optical fibers are butted, is provided in the plug housing. The connector socket has a fiber holding portion disposed in a socket housing, and a fiber inserting hole is provided in the fiber holding portion. A fiber deflection space for allowing deflection of the coated optical fiber, when the coated optical fibers are butted, is provided in the socket housing.

Abstract: A photoelectric coupling assembly and manufacturing method thereof enabling a three dimensional electrical wiring pattern is provided. The assembly includes a photoelectric conversion unit equipped with a photoelectric conversion element and a molded article. The molded article has a hole configured and arranged to have an optical fiber inserted there-through such that a distal end of the fiber faces an active layer of the conversion element, a front surface on which the conversion unit is mounted, and a side surface being contiguous to the front surface. The lead being insert molded into the molded article has a first surface being exposed at the front surface and electrically connected to the conversion element, a second surface being exposed at the side surface, and an engaging portion having a width increasing in a direction away from the front surface. At least a portion of the engaging portion is contained inside the resin forming the molded article.

Abstract: An optical module is configured such that it is not susceptible to fine particulate matter when an optical fiber is inserted into a fiber insertion hole thereof. The optical module is also configured to prevent any reduction in the optical coupling efficiency and degradation of anti-noise properties with the optical fiber. The optical module includes: a ferrule, having the fiber insertion hole formed on an end surface on which an electrical circuit is formed; a photoelectric conversion element, connected to the electrical circuit and facing the fiber insertion hole; and an optical fiber, optically coupled directly with the photoelectric conversion element. The optical fiber has a glass fiber and a protective coating, and is aligned with the insertion hole with the protective coating interposed therebetween. The optical fiber is retained in the insertion hole with the glass fiber not in contact with the insertion hole.

Abstract: Operation efficiency can be dramatically improved and a smaller configuration can be obtained by simplifying the optical connection. An optical module has an electrical connector to connect a device; an optical element unit being electrically connected to the electrical connector and provided with optical elements to convert electrical signals and optical signals and emitting or receiving light; an optical ferrule, having a plurality of optical fiber insertion holes, to hold optical fibers inserted into the plurality of optical fiber insertion holes so as to allow the fibers to be optically connected to the optical element; and an optical cable inlet to introduce an end part of an optical cable provided with the optical fibers. The cable unit with an optical module has an optical cable that includes a plurality of optical fibers and an optical module provided at two ends of the optical cable.

Abstract: The optical module includes a ferrule having a fiber holding hole, a flexible printed circuit (FPC) board provided to one end of the ferrule, an optoelectric device connected to an electric circuit of the FPC board, and a built-in fiber held in the fiber holding hole in a state in which one end of the fiber faces the optoelectric device, and another end of the fiber is flush with an end surface of another end of the ferrule. The method includes insert-molding a ferrule having a fiber holding hole with one end of the ferrule being positioned with respect to a FPC board; connecting an optoelectric device to an electric circuit of the FPC board; inserting and securing a built-in fiber into the fiber holding hole; and polishing an end surface of the fiber so that an end surface of another end of the ferrule is flush with the end surface of the fiber.

Abstract: A photoelectric coupling assembly and manufacturing method thereof enabling a three dimensional electrical wiring pattern is provided. The assembly includes a photoelectric conversion unit equipped with a photoelectric conversion element and a molded article. The molded article has a hole configured and arranged to have an optical fiber inserted there-through such that a distal end of the fiber faces an active layer of the conversion element, a front surface on which the conversion unit is mounted, and a side surface being contiguous to the front surface. The lead being insert molded into the molded article has a first surface being exposed at the front surface and electrically connected to the conversion element, a second surface being exposed at the side surface, and an engaging portion having a width increasing in a direction away from the front surface. At least a portion of the engaging portion is contained inside the resin forming the molded article.

Abstract: A photoelectric coupling assembly and manufacturing method thereof enabling a three dimensional electrical wiring pattern is provided. The assembly includes a photoelectric conversion unit equipped with a photoelectric conversion element and a molded article. The molded article has a hole configured and arranged to have an optical fiber inserted there-through such that a distal end of the fiber faces an active layer of the conversion element, a front surface on which the conversion unit is mounted, and a side surface being contiguous to the front surface. The lead being insert molded into the molded article has a first surface being exposed at the front surface and electrically connected to the conversion element, a second surface being exposed at the side surface, and an engaging portion having a width increasing in a direction away from the front surface. At least a portion of the engaging portion is contained inside the resin forming the molded article.

Abstract: A method of producing an optical connecting component in which three-dimensional electric wiring can be easily and accurately performed, and the optical connecting component are provided. A positioning projection 58 disposed on a second slide core 56 for positioning a core pin 54 disposed on a first slide core 55 is fitted in a positioning hole 34 disposed in a lead frame 30. The lead frame 30 is disposed in the vicinity of a lead pattern 31, so that the lead pattern 31 can be insert-molded while being positioned in an accurate position with respect to the second slide core 56. Therefore, it is possible to easily perform three-dimensional electric wiring in an accurate position.

Abstract: An optical connector that is capable of ensuring excellent waterproofing using a simple structure is provided. The optical connector comprises a connector plug and socket. Each of the plug and socket have a housing, which has a cable-guiding part and a cable-retaining part; a ferrule disposed within the housing and to hold a leading-end part of an optical fiber exposed from a sheath of an optical cable; and a seal member disposed between the cable-guiding part and the cable-retaining part to seal the cable-guiding part.

Abstract: The optical module includes a ferrule having a fiber holding hole, a flexible printed circuit (FPC) board provided to one end of the ferrule, an optoelectric device connected to an electric circuit of the FPC board, and a built-in fiber held in the fiber holding hole in a state in which one end of the fiber faces the optoelectric device, and another end of the fiber is flush with an end surface of another end of the ferrule. The method includes insert-molding a ferrule having a fiber holding hole with one end of the ferrule being positioned with respect to a FPC board; connecting an optoelectric device to an electric circuit of the FPC board; inserting and securing a built-in fiber into the fiber holding hole; and polishing an end surface of the fiber so that an end surface of another end of the ferrule is flush with the end surface of the fiber.

Abstract: An optical connector ferrule molding die 1 for molding an optical connector ferrule having a plurality of optical fiber holes comprises an upper die 10, a lower die 11, and an intermediate die 12, whereas the intermediate die 12 comprises a plurality of optical fiber hole forming pins 126 for forming optical fiber holes. The lower die 11 is provided with a protrusion 114 for forming a window hole of the optical connector ferrule, whereas the optical fiber hole forming pins 126 projecting from the intermediate die 12 are secured by through holes 115 penetrating through the protrusion 114 and V-grooves 113.