Abstract: Disclosed is an optical module configured to be provided to an end part of an optical cable. The optical module includes: a housing wherein, when the optical module side as viewed from the optical cable is defined as the front side and the opposite side therefrom is defined as the rear side, a front-side section of the housing is configured to be inserted into a cage, and a boot for protecting the optical cable extends from the rear side of the housing; a latch-releasing part attached slidably in the front/rear direction to the housing, the latch-releasing part having a projection for releasing a latched state established by a catch on the cage; a tab for pulling the latch-releasing part toward the rear to cause the projection to release the latched state established by the catch on the cage; and a push part that is to be pressed by an operator until the latched state is established, the push part having a rear end surface located more toward the rear than the boot.

Abstract: Disclosed is an optical module configured to be provided to an end part of an optical cable. The optical module includes: a housing wherein, when the optical module side as viewed from the optical cable is defined as the front side and the opposite side therefrom is defined as the rear side, a front-side section of the housing is configured to be inserted into a cage, and a boot for protecting the optical cable extends from the rear side of the housing; a latch-releasing part attached slidably in the front/rear direction to the housing, the latch-releasing part having a projection for releasing a latched state established by a catch on the cage; a tab for pulling the latch-releasing part toward the rear to cause the projection to release the latched state established by the catch on the cage; and a push part that is to be pressed by an operator until the latched state is established, the push part having a rear end surface located more toward the rear than the boot.

Abstract: A cage that a communication module having a module-side connector arranged two-dimensionally with connecting terminals is insertable to/removable from, the cage includes: a movable cage rotatable about a rotation axis, the movable cage having an insertion opening to which the communication module is inserted and a window provided in a position of the module-side connector during inserting of the communication module, the movable cage switching between a first position and a second position by rotating, in the first position, an insertion direction of the communication module to the movable cage being slanted, with respect to a board arranged with a fixed-side connector having connecting terminals arranged two-dimensionally, the communication module being insertable to/removable from the movable cage, in the case that the movable cage is made to be from the first position to the second position in a state where the communication module is inserted, the module-side connector and the fixed-side connector being c

Abstract: Technical Problem In the case where an optical fiber is wound around several times and housed, it is difficult to take out a terminal end of the optical fiber at a side wound around before. Solution to Problem A housing case includes: a body; and bobbin around which an optical fiber is to be wound, the bobbin being housed rotatably in the body, bobbin having a partition portion, partition portion having a fiber groove that guides the optical fiber between an inside and an outside of the partition portion, and the optical fiber being housed by housing a one end side of the optical fiber in the inside of the partition portion and by winding around an outer wall surface of the partition portion the optical fiber that has been guided to the outside of the partition portion with the fiber groove.

Abstract: An optical module includes: a transparent substrate through which light can pass; a photoelectric conversion element mounted on the transparent substrate and emitting light toward the transparent substrate or receiving light having passed through the transparent substrate; and a support member supporting an optical fiber for transmitting light, the support member and the transparent substrate forming an optical path between the photoelectric conversion element and the optical fiber. A positioning hole is formed in the transparent substrate. A positioning pin having a tapered surface is formed on the support member. The transparent substrate and the support member are positioned with respect to one another by inserting the positioning pin into the positioning hole along the optical axis direction of light between the transparent substrate and the support member and by making the tapered surface of the positioning pin contact the edge of the positioning hole without leaving any space therebetween.

Abstract: Technical Problem In the case where an optical fiber is wound around several times and housed, it is difficult to take out a terminal end of the optical fiber at a side wound around before. Solution to Problem A housing case includes: a body; and bobbin around which an optical fiber is to be wound, the bobbin being housed rotatably in the body, bobbin having a partition portion, partition portion having a fiber groove that guides the optical fiber between an inside and an outside of the partition portion, and the optical fiber being housed by housing a one end side of the optical fiber in the inside of the partition portion and by winding around an outer wall surface of the partition portion the optical fiber that has been guided to the outside of the partition portion with the fiber groove.

Abstract: A cage that a communication module having a module-side connector arranged two-dimensionally with connecting terminals is insertable to/removable from, the cage includes: a movable cage rotatable about a rotation axis, the movable cage having an insertion opening to which the communication module is inserted and a window provided in a position of the module-side connector during inserting of the communication module, the movable cage switching between a first position and a second position by rotating, in the first position, an insertion direction of the communication module to the movable cage being slanted, with respect to a board arranged with a fixed-side connector having connecting terminals arranged two-dimensionally, the communication module being insertable to/removable from the movable cage, in the case that the movable cage is made to be from the first position to the second position in a state where the communication module is inserted, the module-side connector and the fixed-side connector being c

Abstract: An evaporative pattern casting method is taught which does not reduce accuracy of an evaporative pattern. The evaporative pattern casting method comprises a part manufacturing process (S2), an assembly process (S4), a sand mold manufacturing process (S6), a molten metal pouring process (S8) and a sand removal process (S12). In the part manufacturing process, the evaporative pattern is manufactured as a plurality of separate parts. In the assembly process, the parts are assembled on a work plane. In the sand mold manufacturing process, the evaporative pattern is covered with sand to form a sand mold without moving the assembled evaporative pattern from the work plane. In the molten metal pouring process, molten metal is poured into the sand mold. In the sand removal process, the sand is removed after the molten metal has solidified.

Abstract: An optical module includes: a transparent substrate through which light can pass; a photoelectric conversion element mounted on the transparent substrate and emitting light toward the transparent substrate or receiving light having passed through the transparent substrate; and a support member supporting an optical fiber for transmitting light, the support member and the transparent substrate forming an optical path between the photoelectric conversion element and the optical fiber. A positioning hole is formed in the transparent substrate. A positioning pin having a tapered surface is formed on the support member. The transparent substrate and the support member are positioned with respect to one another by inserting the positioning pin into the positioning hole along the optical axis direction of light between the transparent substrate and the support member and by making the tapered surface of the positioning pin contact the edge of the positioning hole without leaving any space therebetween.

Abstract: An optical module includes: a transparent substrate through which light can pass; a photoelectric conversion element mounted on the transparent substrate and emitting light toward the transparent substrate or receiving light having passed through the transparent substrate; and a support member supporting an optical fiber for transmitting light, the support member and the transparent substrate forming an optical path between the photoelectric conversion element and the optical fiber. A positioning hole is formed in the transparent substrate. A positioning pin having a tapered surface is formed on the support member. The transparent substrate and the support member are positioned with respect to one another by inserting the positioning pin into the positioning hole along the optical axis direction of light between the transparent substrate and the support member and by making the tapered surface of the positioning pin contact the edge of the positioning hole without leaving any space therebetween.

Abstract: A lightweight metal mold having a necessary hardness is realized. A plurality of bar-shaped members formed of an evaporative material and a plurality of connecting members formed of an evaporative material are prepared. Each of the connecting members has a spherical shape, and ends of a plurality of the bar-shaped members can be connected to each connecting member. Since a fixing angle of each bar-shaped member with respect to the connecting member can be adjusted freely, a three-dimensional mesh structure having various shapes can be formed. By combining the plurality of bar-shaped members and the plurality of connecting members, an evaporative pattern including the three-dimensional mesh structure can be assembled. By adjusting the shape of the three-dimensional mesh structure, the hardness necessary for the metal mold can be obtained, and the metal mold can be made lighter.

Abstract: An optical module includes: a transparent substrate through which light can pass; a photoelectric conversion element mounted on the transparent substrate and emitting light toward the transparent substrate or receiving light having passed through the transparent substrate; and a support member supporting an optical fiber for transmitting light, the support member and the transparent substrate forming an optical path between the photoelectric conversion element and the optical fiber. A positioning hole is formed in the transparent substrate. A positioning pin having a tapered surface is formed on the support member. The transparent substrate and the support member are positioned with respect to one another by inserting the positioning pin into the positioning hole along the optical axis direction of light between the transparent substrate and the support member and by making the tapered surface of the positioning pin contact the edge of the positioning hole without leaving any space therebetween.

Abstract: A lightweight metal mold having a necessary hardness is realized. A plurality of bar-shaped members formed of an evaporative material and a plurality of connecting members formed of an evaporative material are prepared. Each of the connecting members has a spherical shape, and ends of a plurality of the bar-shaped members can be connected to each connecting member. Since a fixing angle of each bar-shaped member with respect to the connecting member can be adjusted freely, a three-dimensional mesh structure having various shapes can be formed. By combining the plurality of bar-shaped members and the plurality of connecting members, an evaporative pattern including the three-dimensional mesh structure can be assembled. By adjusting the shape of the three-dimensional mesh structure, the hardness necessary for the metal mold can be obtained, and the metal mold can be made lighter.

Abstract: An evaporative pattern casting method is taught which does not reduce accuracy of an evaporative pattern. The evaporative pattern casting method comprises a part manufacturing process (S2), an assembly process (S4), a sand mold manufacturing process (S6), a molten metal pouring process (S8) and a sand removal process (S12). In the part manufacturing process, the evaporative pattern is manufactured as a plurality of separate parts. In the assembly process, the parts are assembled on a work plane. In the sand mold manufacturing process, the evaporative pattern is covered with sand to form a sand mold without moving the assembled evaporative pattern from the work plane. In the molten metal pouring process, molten metal is poured into the sand mold. In the sand removal process, the sand is removed after the molten metal has solidified.

Abstract: An optical transceiver module that is capable of being inserted into and removed from a cage includes a housing that houses a photoelectric conversion element, the housing having a guiding section formed along a front-rear direction, an operating lever that has an operating section and a lever-side contact section, the operating lever being attached to the housing in a rotatable manner about an axis of rotation; and a slider that has a wedge section that engages with a latching section provided to the cage, and a slider-side contact section that comes into contact with the lever-side contact section, the slider being guided in the front-rear direction by the guiding section, the lever-side contact section being located opposite the operating section with respect to the axis of rotation, and as the operating section is pushed rearward, the lever-side contact section pushes the slider-side contact section forward and the slider moves forward to a position where the wedge section is unlatched from the latching s

Abstract: The object of the present invention is to provide a novel antistress agent which can be used for suppressing stress. According to the present invention, there is provided an antistress agent which comprises a mixture of cyclic and/or straight chain poly lactic acids having a condensation degree of 3 to 20.

Abstract: The present invention provides a magnesia-spinel refractory in which corrosion resistance and slag penetration resistance are significantly improved. The magnesia-spinel refractory is obtained by mixing magnesia granulated powder having a particle diameter of 10 to 150 &mgr;m and alumina powder having a particle diameter of 0.1 to 5 &mgr;m, molding the resultant mixture, and then burning the molded product to form a dense and strong combined structure of periclase and spinel. The mixture of magnesia and alumina contains powders of both components, or a powder of one of the components and a granulated powder of the other component. It is preferable to use a spray dryer method as granulating means, and a hydrostatic pressing method as molding means. These mixtures are used for producing magnesia-spinel protecting tube and crucible, bricks for copper smelting and converting furnaces, and magnesia-spinel protecting tube and crucible for copper smelting and converting furnace slag.

Abstract: To provide a medicament that can be used as a drug for the effective treatment of gastric ulcers, duodenal ulcers and like diseases of the digestive tract. The medicament comprises a combination of at least one agent selected from the group consisting of histamine H.sub.2 receptor antagonists and proton pump inhibitors, and a digestive enzyme.

Abstract: A refractory is disclosed which contains integrally sintered magnesia particles forming the skeleton of the refractory and a mineral phase of magnesium orthotitanate (Mg.sub.2 TiO.sub.4) formed between the magnesia particles, thus giving an increased erosion resistance. Preferably, the refractory comprises coarse magnesia particles having an average particle diameter of at least 1 mm or a mixture of coarse magnesia particles having an average particle diameter of at least 1 mm and medium magnesia particles having an average particle diameter of 1 to 0.15 mm and 5 to 50 wt. % of magnesium orthotitanate intervening between the magnesia particles. The refractory not only has an excellent durability in a basic atmosphere, but also has a high strength because of combination of the coarse or medium magnesia particles so that it does not tend to deform and has a high durability against thermal shock.

Abstract: Disclosed are novel imidazole derivatives having the formula: ##STR1## wherein R.sup.1 and R.sup.2 are H, alkyl, cycloalkyl, aryl, aralkyl or halogen-substituted alkyl, or R.sup.1 and R.sup.2 are combined to form a heterocyclic ring; R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are H, halogen, alkoxy, aralkyloxy, alkyl, alkoxycarbonyl, nitro, amino, acyl, fluorine substituted-alkyl, or fluorine substituted-alkoxy, or R.sup.3 is combined with R.sup.2 to form a heterocyclic ring; R.sup.8 and R.sup.9 are H, halogen, alkoxy, alkyl, alkoxycarbonyl, nitro, amino, acyl, fluorine substituted-alkyl, fluorine substituted-alkoxy, or aryl group which may have a substituent, or R.sup.8 and R.sup.9 are combined to form an alicyclic ring; R.sup.7 is, where R.sup.8 and R.sup.9 are not combined, H, and, where R.sup.8 and R.sup.9 are combined, H, alkyl which may have a substituent, aryl which may have a substituent, arylcarbonyl which may have a substituent, or a sulfur-containing heterocyclic group; and n is 0 or 1.