Abstract: The information display system includes an antenna, a display unit, a processing unit, and a housing. The antenna receives outside information from an outside of a vehicle. The display unit performs display to the outside of the vehicle. The processing unit is capable of executing outside-targeted display processing by which to cause the display unit to perform display associated with the outside information by controlling the display unit based on the outside information received by the antenna. The housing is installed on the vehicle after having the antenna, the display unit, and the processing unit assembled thereto and thus unitized. As a result, the information display system produces the effect of enabling beneficial information to be provided to the outside of the vehicle.

Abstract: A router unit with an antenna includes a router and an antenna structure. The antenna structure is mounted in a vehicle, and includes a dielectric body with a dielectric property and a planar element with a conductive property that is provided to the dielectric body. The router includes a transferring unit and a housing. The transferring unit transfers a signal to a transfer destination. The housing houses the transferring unit and includes a shield part with a conductive property for blocking noise that affects the transferring unit. The antenna structure is provided to the shield part, connected to the transferring unit, and transmits or receives a radio wave by using the shield part as a ground of the antenna structure.

Abstract: A router unit with an antenna includes a router and an antenna structure. The antenna structure is mounted in a vehicle, and includes a dielectric body with a dielectric property and a planar element with a conductive property that is provided to the dielectric body. The router includes a transferring unit and a housing. The transferring unit transfers a signal to a transfer destination. The housing houses the transferring unit and includes a shield part with a conductive property for blocking noise that affects the transferring unit. The antenna structure is provided to the shield part, connected to the transferring unit, and transmits or receives a radio wave by using the shield part as a ground of the antenna structure.

Abstract: The information display system includes an antenna, a display unit, a processing unit, and a housing. The antenna receives outside information from an outside of a vehicle. The display unit performs display to the outside of the vehicle. The processing unit is capable of executing outside-targeted display processing by which to cause the display unit to perform display associated with the outside information by controlling the display unit based on the outside information received by the antenna. The housing is installed on the vehicle after having the antenna, the display unit, and the processing unit assembled thereto and thus unitized. As a result, the information display system produces the effect of enabling beneficial information to be provided to the outside of the vehicle.

Abstract: An optical element module includes a lead frame an optical element mounted on the lead frame, a resin housing including an opening part, and a tube body. The resin housing contains a part of the lead frame on which the optical element is mounted. The tube body includes a tube part for receiving an optical fiber terminal, a lens arranged between the optical element and the optical fiber terminal, and a lid part which covers the opening part of the resin housing. The tube part, the lens and the lid part are integrally formed.

Abstract: An optical element module includes a lead frame an optical element mounted on the lead frame, a resin housing including an opening part, and a tube body. The resin housing contains a part of the lead frame on which the optical element is mounted. The tube body includes a tube part for receiving an optical fiber terminal, a lens arranged between the optical element and the optical fiber terminal, and a lid part which covers the opening part of the resin housing. The tube part, the lens and the lid part are integrally formed.

Abstract: An optical communication lens arranged between an optical element and an optical fiber terminal includes a first lens part having an aspherical convex shape facing the optical element, a second lens part having an aspherical convex shape facing the optical fiber terminal, and an intermediate part integrally formed with the first lens part and the second lens part therebetween. The first lens part, the second lens part and the intermediate part are integrally formed and are comprised of a resin having optical transparency. Shapes of the first lens part and the second lens part are asymmetric to each other. The second lens part is thicker than the first lens part.

Abstract: A sleeve for an optical connector and a method of manufacturing the sleeve is provided. The sleeve is put between an optical fiber 6 and a transmitting module 4b or between an optical fiber 6 and a receiving module 4a so as to optically connect the optical fiber 6 and the transmitting or receiving module. The sleeve 1 integrally has a light-leading path 26 in a flat-headed conic shape, a peripheral projecting portion 27, an outer tube portion 28. A small-diameter end face 29 of the light-leading path 26 of the sleeve 1 faces the transmitting device 4b or the receiving device 4a. The peripheral projecting portion 27 projects from a peripheral surface of the other end portion 30, on a side of a larger diameter, of the light-leading path 26. The outer tube portion 28 is cylindrically formed and extends from a peripheral portion of the peripheral projecting portion 27. The outer tube portion 28 extends over an entire length of the light-leading path 26 along an optical axis P.

Abstract: An optical connector 21 has sleeves 25 and 25 placed between an optical fiber 40 and reception and transmission modules 26 and 27, wherein the N.A. of each sleeve 25 is larger than the N.A. of the optical fiber 40. A holder 36 forming a part of the sleeve 25 is made of a synthetic resin and can be colored. Further, the sleeve 25 is formed by cutting an optical fiber source line 52, etc.

Abstract: An optical connector 21 has sleeves 25 and 25 placed between an optical fiber 40 and reception and transmission modules 26 and 27, wherein the N.A. of each sleeve 25 is larger than the N.A. of the optical fiber 40. A holder 36 forming a part of the sleeve 25 is made of a synthetic resin and can be colored. Further, the sleeve 25 is formed by cutting an optical fiber source line 52, etc.

Abstract: A sleeve (21) includes a core (22) of transparent synthetic resin and a cladding (23), also of transparent synthetic resin, having a smaller refractive index than the core. The core includes an optical waveguide (24) extending in an optical axial direction to taper in a conical shape and a lens (27) formed at the large diameter end of the waveguide. The lens receives light and converges it. There is a circular flange-like guide integral to the outer wall in the vicinity of the lens. The cladding (23) is formed concentrically with the core in intimate contact with the outer wall of the core. The configuration improves the transmission efficiency of light and contributes to cost reduction of the sleeve.

Abstract: An optical connector 21 has sleeves 25 and 25 placed between an optical fiber 40 and reception and transmission modules 26 and 27, wherein the N.A. of each sleeve 25 is larger than the N.A. of the optical fiber 40. A holder 36 forming a part of the sleeve 25 is made of a synthetic resin and can be colored. Further, the sleeve 25 is formed by cutting an optical fiber source line 52, etc.

Abstract: A light emitting and receiving device consists of a light propagating member provided with a light emitting means for converting first electrical signals into first optical signals, and a light receiving means for receiving and converting second optical signals into second electrical signals. The light receiving means is disposed coaxially with an optical fiber. The light propagating member is situated between the optical fiber and the light receiving means. The light emitting means emits the first optical signals into the optical fiber, and the light propagating member receives from the optical fiber and propagates therethrough the second optical signals to the light receiving means. Loss of optical power is suppressed, and a downsized light emitting and receiving device is attained.

Abstract: A sleeve for an optical connector and a method of manufacturing the sleeve is provided. The sleeve is put between an optical fiber 6 and a transmitting module 4b or between an optical fiber 6 and a receiving module 4a so as to optically connect the optical fiber 6 and the transmitting or receiving module. The sleeve 1 integrally has a light-leading path 26 in a flat-headed conic shape, a peripheral projecting portion 27, an outer tube portion 28. A small-diameter end face 29 of the light-leading path 26 of the sleeve 1 faces the transmitting device 4b or the receiving device 4a. The peripheral projecting portion 27 projects from a peripheral surface of the other end portion 30, on a side of a larger diameter, of the light-leading path 26. The outer tube portion 28 is cylindrically formed and extends from a peripheral portion of the peripheral projecting portion 27. The outer tube portion 28 extends over an entire length of the light-leading path 26 along an optical axis P.

Abstract: A ferule structure for receiving an optical fiber composed of a core and a sheathing for covering the core exclusive of its end includes a core holder for holding the core; a sheath holder for holding the sheathing, communicating with the core holder and being located on an outer wall of the sheathing; and a metallic cylinder member for fixing the sheathing. The metallic member is formed integrally to the sheathing holder. The sheathing holder has a window from which the metallic cylinder member is partially exposed. The metallic cylinder member is caulked through the window so that the sheathing is compressed toward the core. In this configuration, the optical fiber and ferule can be surely secured to each other without using an adhesive.

Abstract: A plastic optical fiber cable 21 comprises a lead portion 22 of synthetic resin; and a coating portion 23 of synthetic resin. The coating portion comprises a core 24, a cladding 25 surrounding the core and a protective sheathing 26. The protective sheathing serves to protect said cladding from an effect when said coating portion is removed. The protective sheathing is harder than said cladding and has higher adherence to adhesive than said cladding has. Said protective sheathing has a thickness which is larger than a manufacturing clearance of said lead portion. In this configuration, a plastic optical fiber cable is provided which is not affected by removal of the coating portion.