摘要:
An optical connector adapter has a tubular sleeve having opposite open ends each for receiving a ferrule supporting an optical fiber to bring front end faces of the ferrules into contact with each other to optically connect together the optical fibers. An adapter housing supports therein the sleeve. The adapter housing has at least one elastically deformable engaging portion projecting from an outer peripheral surface portion of the adapter housing for detachable engagement directly to a mounting board or for detachable engagement to a mounting member detachably engageable with the mounting board to detachably mount the adapter housing to the mounting board.
摘要:
Disclosed are an optical connector plug and an optical connector, wherein the grip member includes an inner barrel and an outer barrel, which are freely slid with respect to each other, the grip member having a reduction state where the inner barrel is accommodated in the outer barrel and an extension state where the inner barrel projects forwardly, and the plug frame being engaged and supported such that the plug frame is movable by a predetermined amount with respect to the outer barrel, and, at a leading end inside the inner barrel are provided a shield plate supported at a free slant with respect to the inner barrel via a base end of the shield plate, disposed at a shield position at which a leading end of the ferrule is shielded in the extension state, and disposed at a non-shield position at which accommodation of the plug frame in the inner barrel is allowed, an action plate supported at a free slant inside the shield plate via a base end of the action plate, and inclined along with the shield plate, with a leading end of the action plate contacting with or engaged with the shield plate, and a biasing supporting means for biasing the shield plate for positioning the shield plate such that the shield plate is disposed at the shield position in the extension position.
摘要:
A polishing system capable of producing and controlling a plurality of types of rod-shaped members is provided. The polishing system has a control machine capable of inputting and indicating pressure processing conditions having actual pressure measurements. The control machine includes a numbers indication part for indicating the number of the rod-shaped members, a type indication part for indicating connector types, a type indication part for indicating ferrule types, a process indication part for indicating a plurality of steps, and programmed pressure for inputting and indicating programmed pressure.
摘要:
An end face polishing device has a first revolution shaft mounted for undergoing revolving movement about a first axis, a rotational shaft mounted for undergoing rotation about a second axis eccentric from the first axis, and a second revolution shaft mounted for undergoing revolving movement about a third axis eccentric from the second axis. A polishing disc is connected to the second revolution shaft for revolving movement therewith.
摘要:
An end face polishing machine has a jig plate for supporting at least one workpiece. A polishing plate is mounted to undergo rotation and revolving movement. A polishing sheet is disposed over the polishing plate for rotation and revolving movement therewith. An elastic member having a hardness that varies with temperature is disposed between the polishing sheet and the polishing plate. A pressing unit presses the end face of the workpiece against a surface of the polishing sheet during rotation and revolving movement of the polishing plate to thereby polish the end face of the workpiece during a polishing operation. A temperature control unit controls the temperature of the elastic member during the polishing operation to thereby polish the end face of the workpiece into a spherical surface during the polishing operation.
摘要:
A memory control circuit for controlling a memory bus and a memory includes buffers, counters, data transfer circuits, and a bus arbiter having a state machine. Each of the data transfer circuits transmits a request signal demanding start of the data transfer on the basis of at least one of the count values of the counters. If the data transfer circuit associated with the current state transmits the request signal, the bus arbiter transmits an acknowledge signal granting start of the data transfer. Each of the data transfer circuits starts the data transfer at receipt of the acknowledge signal, and stops the data transfer being executed on the basis of either number of pieces of data transferred after the receipt of the acknowledge signal or the count value of at least one of the counters. When the data transfer circuit associated with the current state either does not transmit the request signal or has stopped the data transfer, the bus arbiter does not transmit the acknowledge signal to the data transfer circuit associated with the current state, and transition of the current state takes place in accordance with the predetermined transition condition.
摘要:
An optical fiber connector for connecting an optical fiber cable to a ferrule comprises a tubular body having a first end portion for connection to a peripheral surface of a ferrule, a second end portion for connection to a peripheral surface of an optical fiber cable, a step portion interconnecting the first end portion to the second end portion, and a clamping portion for clamping the optical fiber cable to the ferrule. The clamping portion extends inwardly from a terminal end of the second end portion towards the central axis of the tubular body but does not project lengthwise from the terminal end of the second end portion in the direction of the central axis. The first end portion, the second end portion, the step portion and the clamping portion of the tubular body have approximately the same wall thickness.
摘要:
A ferrule for optical connectors which is of funnel type comprising a ferrule body, containing a small-diameter hole and a large-diameter hole having a larger diameter than the small-diameter hole, the small-diameter hole and the large-diameter hole being formed so as to allow an optical fiber to pass therethrough and communicate with each other, the ferrule further comprising a buffering hole having a diameter which is larger than that of the small-diameter hole but smaller than that of the large-diameter hole, the buffering hole being formed between the small-diameter hole and the large-diameter hole and containing groove of concave and convex pattern on the internal surface of the buffering hole. The ferrule body further contains three lines of protrusions extending along the axial thereof, which are formed on the internal surface of the large-diameter hole.
摘要:
In an on screen display apparatus and an on-screen display method, the number of scanning lines of an input signal is detected. In accordance with the result of the detection, a vertical dot number of a character to be displayed is determined and font data is read from a memory device after adjusting a dot number of a blank portion of the font data. Hence, even if the number of the scanning lines changes, the number and positions of characters displayed in one screen remain constant.
摘要:
An optical device includes: a first dielectric slab waveguide having an effective refractive index N.sub.1 ; a second dielectric slab waveguide having an effective refractive index N.sub.2 ; and a third dielectric slab waveguide having a length 1 and an effective refractive index N.sub.3, the third dielectric slab waveguide being formed between the first dielectric slab waveguide and the second dielectric slab waveguide so as to connect the first dielectric slab waveguide with the second dielectric slab waveguides optically; wherein the length I and the effective refractive index N.sub.3 substantially satisfy following equations; ##EQU1## where .lambda. is a free-space wavelength of light traveling in the optical device and the light travels from the first dielectric slab waveguide to the third dielectric slab waveguide at an incident angle .THETA. in a single mode.