摘要:
Disclosed is an optical modulator which substantially lowers loss and has little attenuation in the intensity of an optical signal after modulation. The optical modulator includes a 1×2 RZ pulse carver wherein optical phase shifters used for modulation are arranged along two arm waveguides held between a 1×2 coupler and a 2×2 coupler, two interferometric modulators connected respectively to two output ports of the 2×2 coupler, and a 2×1 coupler for combining the outputs of the interferometric modulators.
摘要:
A scroll compressor includes a housing; a fixed scroll fixed in the housing; an orbiting scroll that has an orbiting end plate on which a spiral orbiting wall is provided upright and that is supported in the housing so as to be able to orbit while being prevented from rotating, in a state where the orbiting wall is engaged with the fixed wall; a suction section that makes refrigerant containing lubricant flow into a suction chamber provided in the housing; and a plurality of supply flow paths that are provided on a sliding surface between the housing and the orbiting end plate and that are connected to the suction chamber.
摘要:
A waveguide type optical switch that can reduce the number of intersections in a matrix optical switch having the configuration of connecting unit optical switches and optical combining devices or optical branching devices to have a connecting function from “multiple inputs to one output” to “one input to multiple outputs”. To reduce the number of intersections in an entire matrix optical switch, an optical combining device of M inputs and one output is divided into (M−1) pieces of unit optical combining elements each having two inputs and one output, which are arranged immediately after (N−1) pieces of respective output ports excluding one piece of the output port closer to the input in the matrix optical switch out of N pieces of the output ports in the optical switch of one input and N outputs.
摘要:
Provided is a scroll-type fluid machine which can reduce deformation of a rotary scroll caused when fixing a bearing into a boss part. A scroll compressor, in which a sealed chamber confining a fluid is formed by a fixed scroll and the rotary scroll meshed together, each of the scrolls having a spiral wall erected on one side face of an end plate, includes: a metallic boss part (15C) protruding from the other side face of the end plate of the rotary scroll; a metallic rotary bearing (12) inserted into the boss part (15C); a crankshaft rotating around an axis and including a bush part inserted in the rotary bearing (12) and rotatably supported by the rotary bearing (12); and an insert member (31) disposed between the boss part (15C) and the rotary bearing (12) and having a thermal expansion coefficient greater than those of the boss part (15C) and the rotary bearing (12).
摘要:
A method for producing a sensor board includes the steps of preparing an insulating layer; forming at least a pair of electrodes on the insulating layer; and forming a conductive layer by spraying a conductive component-containing liquid onto the insulating layer by an ultrasonic spray method so as to cover the electrodes.
摘要:
To provide a manufacturing method of a superconducting radio-frequency acceleration cavity used in a charged particle accelerator enabling the manufacturing with few waste amounts of the niobium material at low cost in a short time, the manufacturing method has each of the steps of (a) obtaining an ingot made from a disk-shaped niobium material, (b) slicing and cutting the niobium ingot into a plurality of niobium plates each with a predetermined thickness, by vibrating multiple wires back and forth while spraying fine floating abrasive grains with the niobium ingot supported, (c) removing the floating abrasive grains adhered to the sliced niobium plates, and (d) performing deep draw forming on the niobium plates and thereby obtaining a niobium cell of a desired shape.
摘要:
A motor includes a tubular housing having flat side walls along each side of rectangular joined with each other by joining sections, a magnet, having magnet poles in the jointing section, disposed along the inner peripheral surfaces of the housing, a shaft inserted along the axis of the housing, an armature fixed to the shaft in such a position as to be opposite to the magnet, a commutator mounted on the shaft, a carbon brush in sliding contact with the outer peripheral surface of the commutator, and electrical components provided within the housing. The electrical components in the longer direction are arranged such that they are not parallel with all the sides of the housing.
摘要:
A substance detection sensor comprises an insulation layer (2) having flexibility, two electrodes (3A, 3B) so disposed on the insulation layer as to be opposite to each other at a space therebetween and connected to an electric resistance detector, and a conductive layer (4) which is so formed on the insulation layer as to span the two electrodes and to be electrically connected to the two electrodes. The swelling ratio of the conductive layer (4) is changed according to the type and/or the quantity of a specific substance.
摘要:
A developing unit includes a developing roller which rotates about a rotational axis to supply toner to a photoreceptor, and a magnetic roller which forms a magnetic brush with a two-component developing agent having carrier and the toner and thereby forms a toner layer on the developing roller, the developing roller including: a cylindrical core portion which includes an electric conductor; a first resistive layer which covers a cylindrical surface of the core portion; a second resistive layer which covers the first resistive layer, and has electric-resistivity lower than that of the first resistive layer; and a current leakage control member which prevents leakage of electric current from the core portion toward the second resistive layer through an end of the developing roller along a direction of the rotational axis.
摘要:
A folder gluer for conveying a cardboard sheet and folding up the cardboard sheet from a deployed state thereof is disclosed. The folder gluer comprises two flat belts including a first belt and a second belt arranged in parallel for conveying a cardboard sheet, two pulleys provided at a starting part or a terminal part in a conveying direction of the folder gluer for respectively driving the first and second flat belts by friction forces, two motors for respectively driving the pulley for the first belt and the pulley for the second belt, a sensor device for respectively detecting the speeds of the first belt and the second belt, and a control device for controlling at least one of the two motors such that a difference in the speeds of the first belt and the second belt detected by the sensor device becomes zero.