Abstract: In a receptacle-type optical connector to be connected to a plug-type optical connector connected to an optical fiber terminated by the use of a ferrule, use is made of a base shell, a front shell, and an intermediate shell which is interposed between the base shell and the front shell. The base shell has a core coupling portion for coupling a core of the optical fiber. The front shell has an opening which is shaped in conformity with a plug shape of the plug-type optical connector. The intermediate shell is partly fitted to the base shell. The intermediate shell has a cylindrical protrusion which is shaped in conformity with the ferrule and which is inserted into the opening.

Abstract: In a receptacle-type optical connector to be connected to a plug-type optical connector connected to an optical fiber terminated by the use of a ferrule, use is made of a base shell, a front shell, and an intermediate shell which is interposed between the base shell and the front shell. The base shell has a core coupling portion for coupling a core of the optical fiber. The front shell has an opening which is shaped in conformity with a plug shape of the plug-type optical connector. The intermediate shell is partly fitted to the base shell. The intermediate shell has a cylindrical protrusion which is shaped in conformity with the ferrule and which is inserted into the opening.

Abstract: In a receptacle-type optical connector to be connected to a plug-type optical connector connected to an optical fiber terminated by the use of a ferrule, use is made of a base shell, a front shell, and an intermediate shell which is interposed between the base shell and the front shell. The base shell has a core coupling portion for coupling a core of the optical fiber. The front shell has an opening which is shaped in conformity with a plug shape of the plug-type optical connector. The intermediate shell is partly fitted to the base shell. The intermediate shell has a cylindrical protrusion which is shaped in conformity with the ferrule and which is inserted into the opening.

Abstract: In an optical connector adapter for use in connecting first and second optical connectors to each other, the optical connector adapter includes a shell member which has a wall portion defining an opening and which receives the first optical connector. The opening is received with an insert member adapted to guide the second optical connector. The insert member includes a flange portion extending outward in a radial direction. The flange portion has an extending end face faced to the wall portion, an engaging portion formed on the extending end face, and a slit allowing the engaging portion to be movable away from the wall portion. The wall portion has an engaged portion to be engaged with the engaging portion of the flange portion.

Abstract: An adapter for coupling first and second optical fiber connectors having ferrules, respectively, comprises first and second members and a sleeve. The first and the second members can be detachably coupled to each other. The second member holds the sleeve. To prevent one end of the sleeve from being brought into undesirable contact with end surface of the ferrule of the first optical fiber connector when the first member connected with the first optical fiber connector is coupled with the second member, the first member is formed with first and second positioning holes, while the second member is provided with first and second positioning sticks. The first and the second positioning sticks project beyond the end of the sleeve. The first and the second positioning sticks are inserted into the first and the second positioning holes, respectively, while the ferrule of the first optical fiber connector is suitably inserted into the sleeve when the first and the second members are coupled together.

Abstract: In an optical connector adapter for use in connecting first and second optical connectors to each other, the optical connector adapter includes a shell member which has a wall portion defining an opening and which receives the first optical connector. The opening is received with an insert member adapted to guide the second optical connector. The insert member includes a flange portion extending outward in a radial direction. The flange portion has an extending end face faced to the wall portion, an engaging portion formed on the extending end face, and a slit allowing the engaging portion to be movable away from the wall portion. The wall portion has an engaged portion to be engaged with the engaging portion of the flange portion.

Abstract: In a receptacle-type optical connector to be connected to a plug-type optical connector connected to an optical fiber terminated by the use of a ferrule, use is made of a base shell, a front shell, and an intermediate shell which is interposed between the base shell and the front shell. The base shell has a core coupling portion for coupling a core of the optical fiber. The front shell has an opening which is shaped in conformity with a plug shape of the plug-type optical connector. The intermediate shell is partly fitted to the base shell. The intermediate shell has a cylindrical protrusion which is shaped in conformity with the ferrule and which is inserted into the opening.

Abstract: An adapter for coupling first and second optical fiber connectors having ferrules, respectively, comprises first and second members and a sleeve. The first and the second members can be detachably coupled to each other. The second member holds the sleeve. To prevent one end of the sleeve from being brought into undesirable contact with end surface of the ferrule of the first optical fiber connector when the first member connected with the first optical fiber connector is coupled with the second member, the first member is formed with first and second positioning holes, while the second member is provided with first and second positioning sticks. The first and the second positioning sticks project beyond the end of the sleeve. The first and the second positioning sticks are inserted into the first and the second positioning holes, respectively, while the ferrule of the first optical fiber connector is suitably inserted into the sleeve when the first and the second members are coupled together.

Abstract: A vehicle lamp is disclosed which includes a reflector 3 that is divided into two or more areas by predetermined lines as viewed from the front of the vehicle lamp. The two or more areas are separated by a difference of over 5 millimeter. In addition, the reflector can include a plurality of parabolic pillar shaped surfaces that gather at a central portion and can include a free-curved surface. The vehicle lamp provides an innovative appearance that can be varied to provide a plurality of possible aesthetic designs.

Abstract: A flame-retardant composition is prepared by mixing 100 parts by weight of a rubber or plastics free from any halogen with about 50 to about 200 parts by weight of magnesium hydroxide having an average particle diameter of about 0.3 to about 2 .mu.m and about 5 to about 50 parts by weight of carbon black powder having an oil absorption of about 0.5 to about 2.0 ml/g, and then cross-linking the mixture with an organic peroxide, sulfur, or a sulfur compound as a vulcanizing agent. By forming an electrical insulation and/or a sheath of the flame-retardant composition, there is provided a flame-retardant cable of the type including a cable core composed of an electric conductor coated with the electrical insulation or a plurality of such cores twisted together and covered, together with a filler, with the sheath.

Abstract: Silane-crosslinkable halogenated polymer composition and process of crosslinking the same.The silane-crosslinkable halogenated polymer composition contains a mixture including: 100 parts by weight of a halogenated polymer and about 0.1-20 parts by weight of an amino group-containing organic silane compound. The halogenated polymer composition silane-crosslinked is useful for the sheath and insulation of electric wires and cables and other moldings such as a hose.

Abstract: A flame-retardant composition is prepared by mixing 100 parts by weight of a rubber or plastics free from any halogen with about 50 to about 200 parts by weight of magnesium hydroxide having an average particle diameter of about 0.3 to about 2 .mu.m and about 5 to about 50 parts by weight of carbon black powder having an oil absorption of about 0.5 to about 2.0 ml/g, and then cross-linking the mixture with an organic peroxide, sulfur, or a sulfur compound as a vulcanizing agent. By forming an electrical insulation and/or a sheath of the flame-retardant composition, there is provided a flame-retardant cable of the type including a cable core composed of an electric conductor coated with the electrical insulation or a plurality of such cores twisted together and covered, together with a filler, with the sheath.