摘要:
A data distribution system transmitting and receiving a large capacity of data such as image data smoothly without incurring a delay over an optical fiber line located between a data sever and a client device. In the data transmission system, a plurality of client devices are bus-connected through an optical fiber to a data server transmitting and receiving data as signal light. Each of the client devices has a client optical switch and is connected with a client access device. The client optical switch is structured with a thermal-lens forming element and a signal-light path shifting member. When any of the client devices forwards an access command to its own client access device, control light is irradiated from the client access device to the own client optical switch thus effecting a switchover. Thus, transmission data of from the data server is stored in a data storage of the relevant client device.
摘要:
A flip-flop circuit of the present invention includes a first switch and a second switch which are connected in series to each other. The first switch includes: two input ports upon which light source light and signal light are incident; two output ports for outputting an optical output; and a thermal lens forming element for forming a thermal lens in a predetermined optical inputting condition. Although the second switch is composed in the same manner as that of the first switch, a relation between the wave-lengths to be utilized is inverted. When a state is changed from OFF to ON, a pulse signal is inputted for setting and one of the rays of output light of the second switch is fed-back to the first switch so as to maintain the state of ON. When the state is changed from ON to OFF, a pulse of additional signal light is inputted. Due to the foregoing, the two states of ON and OFF can be stably maintained.
摘要:
In an end surface closely arranged multicore optical fiber 200, at least two single-mode optical fibers 10 are, at one and the other ends of the individual single-mode optical fibers 10, closely arranged in parallel to each other and bound together, such that a center-center distance of adjacent single-mode optical fibers 10 is twice a core diameter of the single-mode optical fiber 10 or greater and 0.5 times a value obtained by subtracting the core diameter of the single-mode optical fiber from a core diameter of a multimode optical fiber to be connected or less, and that the remaining individual single-mode optical fibers 10 are individually independent from each other.
摘要:
An image processing device (1) provides a client device (3) with a first test pattern image, acquires the results of evaluation concerning distinguishability of the image by human eyes, acquires color expression characteristics of the client device (3) according to the results, provides the client device (3) with a second test pattern image, acquires the results of evaluation concerning appearance of the second test pattern to human eyes, acquires the color balance characteristics of the client device (3), subjects the image data to be provided to color correction on the basis of the characteristics, and provides the client device (3) with the image data, thereby enhancing the color reproductivity of the image data on the client device (3) side.
摘要:
There is provided a novel process for producing an indole derivative which comprises cyclizing 2-nitrobenzylcarbony compound in the presence of a catalyst comprising a Group VIII metal of the Periodic Table, characterized by conducting the cyclization in a gas atmosphere containing carbon monoxide. The process enables an indole compound to be selectively produced in a high yield from 2-nitrobenzylcarbonyl compound, and hardly yields an indoline compound as a reduction by-product that has been a problem in the catalytic hydrogenation method employing a noble metal catalyst. The indole derivative produced by the present process is useful for various fine chemical intermediates including compounds and physiologically active substances such as pharmaceuticals and agrochemicals.
摘要:
An antenna device is provided in which a common mode current does not flow in a coaxial cable. The coaxial cable is uprighted at the end of the base plate and bent toward the notched portion of the cover so that the connector reaches to the notched portion. A short-circuit stub structure is provided in such a manner that a part of the outer sheath of the coaxial cable is removed to expose the outer conductor and a ring-shaped metal terminal is crimped to the exposed outer conductor. The ring-shaped metal terminal is fixed by using a screw to an acceptance member made of a stainless steel provided on the base plate. The terminal is provided at the position within 0.25λ from the feeding point of the ground antenna element.
摘要:
A dual band antenna contains a first radiating conductor plate disposed substantially parallel to a grounding conductor, a power-supplying conductor plate extending downwards from the first radiating conductor plate, a connecting conductor plate for connecting the first radiating conductor plate to the grounding conductor, a second radiating conductor plate provided upright beneath the first radiating conductor plate and having a substantially wedge-shaped, elastically deformable portion, and a synthetic resin adjusting screw threaded to the first radiating conductor plate for depressing the top portion of the second radiating conductor plate downwards. The first and second radiating conductor plates resonate at first and second frequencies respectively (with f2>f1). The gap between the second radiating conductor plate and the first radiating conductor plate can be changed.
摘要:
A novel process for the preparation of benzonitrile compounds useful for herbicides or their intermediates is provided. A process for the preparation of compounds of the formula (1), characterized in comprising reacting a compound of the formula (1a) with one or more cyanides selected from potassium cyanide, sodium cyanide and zinc cyanide in the presence of a metallic catalyst. In the scheme, X is hydrogen, fluorine or chlorine atom; Z is nitro, amino or C1-C4 alkylsulfonylamino group or the like; Y is fluorine, chlorine or bromine atom or the like; and Q is hydrogen atom, or nitro or amino group or the like.
摘要:
An acrylic rubber composition which forms a phosphorous inert coating on the surface of a metal member when in contact with the metal member under high temperature contains the acrylic rubber, a phosphite-based material and an acid acceptor which reacts with an acid substance in the composition. The acrylic rubber composition particularly exhibits its effect when used as a sealing member 10 for an oil filter 1 which filters engine oil. In such cases, the content of the phosphite-based material is preferably 8-20 parts by weight and that of the acid acceptor is preferably 1-10 parts by weight to 100 parts by weight of the acrylic rubber.
摘要:
A full optical type optical element performs an information processing on an input signal light beam through use of only light beams including the signal light beam and an auxiliary light beam for assisting operation. The optical element includes aggregates which are dispersed within the optical element as optical functional aggregates, and which are composed of a single kind or multiple kinds of compounds including a single species of atoms or molecules. Thus, a full optical type optical element having a high resolution can be obtained through use of a thin-film element which contains nanoparticles comprising molecules of an organic compound and associates/aggregates of these molecules.