Abstract: The invention relates to a videoconference system and others of structure enabling smooth progress of interlocution even in distance interlocution among many people through a plurality of terminal devices. The videoconference system is a network system enabling transmission and reception of data by several types of media through a plurality of terminal devices connected by a transmission means, and is provided with a management table for managing users of the respective terminal devices in a state in which the users are sorted in an interlocutor mode for interlocutors mainly engaged in progress of a specific subject and in an observer mode for observers other than the interlocutors, and a communication control means for editing interlocution information by media selected from interlocution information among users sorted in the interlocutor mode and delivering the edited information to the terminal devices of the respective users sorted in the observer mode.

Abstract: The invention relates to a video editing system and others enabling editing of training video data suitable for training of counselors and others engaged in counseling and others in a direct or indirect face-to-face state and to a recording/reproducing method of visual information and others enabling useful personal learning even in an environment without direct appearance of an instructor or the like in the fields in which instruction or learning using the visual information is effective. Particularly, the video editing system is provided with image pickup means for picking up images of respective, first and second interlocutors facing each other, and first editing means for editing video data in which at least the videos of the first and second interlocutors retrieved from the image pickup means are combined in a state in which display timings thereof are substantially synchronized with each other.

Abstract: The invention relates to a video editing system and others enabling editing of training video data suitable for training of counselors and others engaged in counseling and others in a direct or indirect face-to-face state and to a recording/reproducing method of visual information and others enabling useful personal learning even in an environment without direct appearance of an instructor or the like in the fields in which instruction or learning using the visual information is effective. Particularly, the video editing system is provided with image pickup means for picking up images of respective, first and second interlocutors facing each other, and first editing means for editing video data in which at least the videos of the first and second interlocutors retrieved from the image pickup means are combined in a state in which display timings thereof are substantially synchronized with each other.

Abstract: An optical connector ferrule 1A is mounted on the distal end of a fiber optic ribbon cable 2 to form an optical connector Ca. A mating surface 11 of the optical connector Ca opposes an optical connector Cb to be mated. Fiber accommodating holes 13 are formed in the mating surface 11 so as to accommodate optical fibers, and a pair of guide projections 10 are formed on the mating surface 11 so as to be positioned with the optical connector Cb. The ferrule 1A is integrally molded with a resin. This provides an optical connector ferrule allowing the easy manufacturing of an optical connector with good transmission performance.

Abstract: A ferrule for optical connector according to the present invention is provided with a fiber positioning hole, a pair of guide holes into which guide pins are inserted, and a connecting end face in which ends of the fiber positioning hole and guide holes open. A chamfer portion equivalent to a part of a surface of a body of revolution is formed at each guide hole on the connecting end face side. Further, the connecting end face is formed at an angle relative to a plane normal to the center axes of the pair of guide holes. In this structure, the slope of the connecting end face can suppress degradation of connection loss, and the provision of the chamfer portions can facilitate insertion of the guide pins, prevent damage of the connecting end face due to the guide pins, and also suppress degradation of connection loss due to the damage.

Abstract: An adapter 5 for an optical connector comprises a pair of wall portions 55a and 55b on a mounting surface 56a. The structure allows the adapter to accommodate an optical connector 4 inserted from a direction vertical to the mounting surface 56a, and allows the adapter to accommodate an optical connector 7 inserted along a predetermined axis 8. On this account, it is possible to insert the connector 7 along the predetermined axis 8 to the housed optical connector 4. Since the optical connector 4 is mated to and demated from the optical connector 7 in this sort of adapters, force applied to an optical module 2 is decreased in mating/demating the connector. An optical module product 9 includes the optical module 2, a coated optical fiber 3, the optical connector 4, and the optical connector's adapter 5. An optical module mounting substrate product 1 includes the optical module product 9 and a substrate 10 for mounting thereon the optical module 2 and the adapter 5 for optical connectors.

Abstract: The optical fiber positioning member in accordance with the present invention comprises a resin composition containing a PPS resin mainly composed of a linear type PPS resin at a content in the range of 24% to 30% by weight, silica particles at a content in the range of 61% to 67% by weight, and tetrapod-shaped whiskers at a content in the range of 6% to 12% by weight.

Abstract: A pair of guide holes for guide pin insertion and one or a plurality of optical fiber positioning holes extending inwardly from the front end surface are formed in a connector ferrule of an optical connector. A chamfer is formed on the opening edge portion of the guide hole of the connector ferrule on the front end surface side thereof. The opening diameter R of the guide hole at the front end surface is preferably 1.0 to 1.5 mm when the front end surface is slant polished at an angle of 8 degrees. Furthermore, the chamfering angle &thgr; of the chamfer is preferably 90 to 150 degrees. Moreover, the average particle size of the filler contained in the connector ferrule is no more than 20 &mgr;m. As a result, the surface of the chamfer is comparatively smooth.

Abstract: An optical connector comprising a ferrule including an optical fiber, wherein a hollow portion for optical fiber protrusion is formed on a front end face of the ferrule, the optical fiber is inserted into an optical fiber positioning hole extended from an optical fiber protrusion port provided on a bottom face of the hollow portion toward an inside of the ferrule, and a tip face of the optical fiber is drawn in the hollow portion. This makes it possible to provide an optical connector which can shorten a time for assembly and can be assembled easily and inexpensively.

Abstract: An optical connector includes a ferrule and a pair of guide pins. Fiber insertion holes and a pair of pin insertion holes are formed in the ferrule. Each of the pair of guide pins has a total length larger than that of each pin insertion hole. The guide pins are coupled to each other on one end portion thereof. The other ends of the guide pins can be accommodated in the pin insertion holes by sliding the guide pins. An optical connecting surface of the ferrule is located at the extreme tip portion when viewed from the optical axis direction of an optical fiber while the other ends of the pair of guide pins are accommodated in the pin insertion holes. This makes it possible to bring the optical connecting surface of the ferrule into contact with an opposite-side optical component while the other ends of the guide pins are accommodated in the pin insertion holes and prohibited from protruding from the optical connecting surface.

Abstract: The present invention relates to an optical fiber positioning member, such as a ferrule, used for optically coupling optical fibers to each other. The object of the present invention is to provide an optical fiber positioning member having practically sufficient mechanical strength and long-term durability, while maintaining high dimensional precision and dimensional stability. The optical fiber positioning member of the present invention comprises a resin composition containing a polyphenylene sulfide resin at a ratio in the range of 15% to 35% by weight, silica particles at a ratio in the range of 45% to 65% by weight, and silicate whiskers at a ratio in the range of 26% to 35% by weight, the resin composition containing the silica particles and the silicate whiskers at a ratio in the range of 65% to 85% by weight.

Abstract: A ferrule for optical connector according to the present invention is provided with a fiber positioning hole, a pair of guide holes into which guide pins are inserted, and a connecting end face in which ends of the fiber positioning hole and guide holes open. A chamfer portion equivalent to a part of a surface of a body of revolution is formed at each guide hole on the connecting end face side. Further, the connecting end face is formed at an angle relative to a plane normal to the center axes of the pair of guide holes. In this structure, the slope of the connecting end face can suppress degradation of connection loss, and the provision of the chamfer portions can facilitate insertion of the guide pins, prevent damage of the connecting end face due to the guide pins, and also suppress degradation of connection loss due to the damage.

Abstract: A ferrule for optical connector according to the present invention is provided with a fiber positioning hole, a pair of guide holes into which guide pins are inserted, and a connecting end face in which ends of the fiber positioning hole and guide holes open. A chamfer portion equivalent to a part of a surface of a body of revolution is formed at each guide hole on the connecting end face side. Further, the connecting end face is formed at an angle relative to a plane normal to the center axes of the pair of guide holes. In this structure, the slope of the connecting end face can suppress degradation of connection loss, and the provision of the chamfer portions can facilitate insertion of the guide pins, prevent damage of the connecting end face due to the guide pins, and also suppress degradation of connection loss due to the damage.

Abstract: In an optical connector for securing an optical fiber by inserting it into an optical fiber positioning hole of a connector ferrule body, an end face of the optical fiber is disposed within the optical fiber positioning hole, a predetermined length region of the optical fiber on the end face side is in a free state adapted to expand and contract, and the end face of the optical fiber is buried in a refractive index matching material filling near an opening portion of the optical fiber positioning hole.

Abstract: An optical fiber holder 1B is an optical fiber holder for holding a plurality of optical fibers in line, and includes a base member 20 with a plurality of parallel positioning grooves 90 for positioning and aligning the plurality of optical fibers, and a lid member 32 adapted to cover the plurality of positioning grooves 90 and to fix the plurality of optical fibers, arranged in the positioning grooves 90, by pressing against the bottom portions of the positioning grooves 90. The lid member 32 has small projections 102 on its portion which comes into contact with the optical fibers.

Abstract: An optical connector ferrule 1A is mounted on the distal end of a fiber optic ribbon cable 2 to form an optical connector Ca. A mating surface 11 of the optical connector Ca opposes an optical connector Cb to be mated. Fiber accommodating holes 13 are formed in the mating surface 11 so as to accommodate optical fibers, and a pair of guide projections 10 are formed on the mating surface 11 so as to be positioned with the optical connector Cb. The ferrule 1A is integrally molded with a resin. This provides an optical connector ferrule allowing the easy manufacturing of an optical connector with good transmission performance.

Abstract: An optical transmission component and a method of making the same in which one or a plurality of optical fibers 1 are fixed to a main body 3 of the optical transmission component with one end face of each optical fiber being exposed, and thus exposed end face is used as a connecting end face to be optically connected to another optical transmission component. The coating 1b of each optical fiber 1 is removed, so as to expose a predetermined length of an optical fiber 1a. An end face 1c of thus exposed optical fiber is processed by spark discharge processing in a short period of time, such that at least the front end of a core portion projects from the front end of its cladding portion. Thus processed optical fiber 1 is inserted into the main body and fixed thereto with an adhesive 5, while a predetermined pressure is being added along the optical axis of each optical fiber 1 from the end face 1c side.

Abstract: An optical connector comprising a ferrule including an optical fiber, wherein a hollow portion for optical fiber protrusion is formed on a front end face of the ferrule, the optical fiber is inserted into an optical fiber positioning hole extended from an optical fiber protrusion port provided on a bottom face of the hollow portion toward an inside of the ferrule, and a tip face of the optical fiber is drawn in the hollow portion. This makes it possible to provide an optical connector which can shorten a time for assembly and can be assembled easily and inexpensively.

Abstract: The optical fiber positioning member in accordance with the present invention comprises a resin composition containing a PPS resin mainly composed of a linear type PPS resin at a content in the range of 24% to 30% by weight, silica particles at a content in the range of 61% to 67% by weight, and tetrapod-shaped whiskers at a content in the range of 6% to 12% by weight.

Abstract: An optical connector includes a first ferrule which holds the ends of a first optical fiber unit including at least one optical fiber, and a housing. The housing is a U-shaped member with parallel arms extending in the lengthwise direction of the first optical fiber unit. The housing surrounds one of the widthwise sides of the first ferrule from which the first optical fiber unit is derived and the lengthwise sides of the first ferrule, whereby the housing accommodates the first ferrule. The housing receives a second ferrule which holds the ends of a second optical fiber unit including at least one optical fiber through the U-shaped opening. The housing surrounds the lengthwise side of the second ferrule and a part of the side of the second ferrule from which the second optical fiber unit is derived, whereby the first and second ferrules are coupled together.