Abstract: The present invention provides a cheap optical connector having a simple construction without increasing bending loss and coupling loss of a multimode optical fiber fixedly inserted into e.g., an optical connector. The optical connector is constructed by fitting a receptacle connector and a plug connector. Connecting end face sides of multimode optical fibers are fixed to the plug connector. A light emitting element having a radiation numerical aperture larger than the numerical aperture of the multimode optical fiber, and a convergent lens for converging light emitted from the light emitting element so as to provide an incident numerical aperture smaller than the numerical aperture of the multimode optical fiber and making this light incident to the multimode optical fiber are arranged in the receptacle connector. A light receiving element is arranged side by side with the light emitting element, and the multimode optical fiber is optically connected to the light receiving element.

Abstract: A connector of the invention is a connector capable of suppressing electrical crosstalk between optical devices, preferably performing the optical coupling of the optical devices and the electrical coupling by electric terminals. A first connector housing formed of a conductive resin is disposed with a first optical device accommodating part for accommodating a light receiving device. A second connector housing formed of a non-conductive resin is disposed with a second optical device accommodating part for accommodating a light emitting device and electric terminals. The coupling end faces of optical fibers are fixed to a plug connector and the plug connector is inserted into a plug connector fitting part. This insertion allows optical coupling of the optical fibers to the light emitting device and the light receiving device, and it allows electrical coupling of the above electric terminals to wires fixed to the plug connector.

Abstract: A simple, low-cost fixing structure capable of surely fixing an optical fiber to an optical fiber fixture. A ferrule (1) is formed with an optical fiber insertion hole (2) penetrating from the tip end side thereof to the back end side and an opening (4) communicating from the side of the ferrule to the optical fiber insertion hole (2). A plastic optical fiber (3) is inserted into the optical fiber insertion hole (2). A gutter-like optical fiber fixing component (5) having optical fiber clamping parts (6) facing each other is inserted into the opening (4). Then, the plastic optical fiber (3) is clamped from both sides between inner wall surfaces (7) of the optical fiber clamping parts (6), outer surfaces (9) of the optical fiber clamping parts (6) of the optical fiber fixing component (5) is pressure welded with inner wall surfaces (8) of the opening (4), and the plastic optical fiber (3) is fixed and prevented from falling off from the ferrule (1).

Abstract: An optical/electric composite connector is capable of firmly shielding optical elements, while the optical/electric composite connector is capable of performing both an optical connection of the optical elements and an electric connection by electric terminals. An optical/electric composite connection (1) is formed by connecting a first connector housing (3) and a second connector housing (4). The first connector housing (3) stores the optical elements and is formed by electric conductive resin. The second connector housing (4) is formed by non-electric conductive resin. Both the first connector housing (3) and the second connector housing (4) are detachably connected to each other. A metal case (6) for fixing the optical elements stored in the first connector housing is mounted on the first connector housing (3).

Abstract: An optical connector of the invention is a small-sized optical connector capable of connecting an optical fiber to an optical device with a low connection loss. An optical connector (2) has a plug housing (housing) (6). At the back end side of an upper face (7) of the housing (6), bridge supporting parts (8) standing from both sides of the upper face of the housing and a bridge part (9) spaced from the upper face of the housing (6) as supported at both sides thereof by the bridge supporting parts (8) are disposed. The center part of the bridge part (9) is formed with a lock arm (5) extended toward the front end (20) side of the housing (6). The front end side of the lock arm (5) is formed with a locking pawl (4) extended upward for locking into a pawl fitting hole (11) of an adapter (1) in inserting and fitting the optical connector (2) to the adapter (1).

Abstract: A connector of the invention is a connector capable of suppressing electrical crosstalk between optical devices, preferably performing the optical coupling of the optical devices and the electrical coupling by electric terminals. A first connector housing formed of a conductive resin is disposed with a first optical device accommodating part for accommodating a light receiving device. A second connector housing formed of a non-conductive resin is disposed with a second optical device accommodating part for accommodating a light emitting device and electric terminals. The coupling end faces of optical fibers are fixed to a plug connector and the plug connector is inserted into a plug connector fitting part. This insertion allows optical coupling of the optical fibers to the light emitting device and the light receiving device, and it allows electrical coupling of the above electric terminals to wires fixed to the plug connector.

Abstract: A simple, low-cost fixing structure capable of surely fixing an optical fiber to an optical fiber fixture. A ferrule (1) is formed with an optical fiber insertion hole (2) penetrating from the tip end side thereof to the back end side and an opening (4) communicating from the side of the ferrule to the optical fiber insertion hole (2). A plastic optical fiber (3) is inserted into the optical fiber insertion hole (2). A gutter-like optical fiber fixing component (5) having optical fiber clamping parts (6) facing each other is inserted into the opening (4). Then, the plastic optical fiber (3) is clamped from both sides between inner wall surfaces (7) of the optical fiber clamping parts (6), outer surfaces (9) of the optical fiber clamping parts (6) of the optical fiber fixing component (5) is pressure welded with inner wall surfaces (8) of the opening (4), and the plastic optical fiber (3) is fixed and prevented from falling off from the ferrule (1).

Abstract: An optical connector of the invention is a small-sized optical connector capable of connecting an optical fiber to an optical device with a low connection loss. An optical connector (2) has a plug housing (housing) (6). At the back end side of an upper face (7) of the housing (6), bridge supporting parts (8) standing from both sides of the upper face of the housing and a bridge part (9) spaced from the upper face of the housing (6) as supported at both sides thereof by the bridge supporting parts (8) are disposed. The center part of the bridge part (9) is formed with a lock arm (5) extended toward the front end (20) side of the housing (6). The front end side of the lock arm (5) is formed with a locking pawl (4) extended upward for locking into a pawl fitting hole (11) of an adapter (1) in inserting and fitting the optical connector (2) to the adapter (1).

Abstract: An optical/electric composite connector of the present invention is capable of firmly shielding optical elements, while the optical/electric composite connector is capable of performing both an optical connection of the optical elements and an electric connection by electric terminals. An optical/electric composite connection (1) is formed by that a second connector housing (4) is provided on the side of one end of a first connector housing (3) which stores thereinto the optical elements. The first connector housing (3) is formed by electric conductive resin, and the second connector housing (4) is formed by nonelectric conductive resin. Connection end surfaces of optical fibers (12), (13) which are optically coupled to the optical elements are fixed to a plug connector (2), and then, are inserted into the second connector housing (4).

Abstract: The present invention provides a cheap optical connector having a simple construction without increasing bending loss and coupling loss of a multimode optical fiber fixedly inserted into e.g., an optical connector. The optical connector is constructed by fitting a receptacle connector and a plug connector, Connecting end face sides of multimode optical fibers are fixed to the plug connector. A light emitting element having a radiation numerical aperture larger than the numerical aperture of the multimode optical fiber, and a convergent lens for converging light emitted from the light emitting element so as to provide an incident numerical aperture smaller than the numerical aperture of the multimode optical fiber and making this light incident to the multimode optical fiber are arranged in the receptacle connector. A light receiving element is arranged side by side with the light emitting element, and the multimode optical fiber is optically connected to the light receiving element.