摘要:
A self-frequency-doubler laser element having a three-dimensional optical waveguide includes a first transparent insulating substrate having both a DFB grating and a grating reflector formed on one side of the DFB grating, a Nd.sup.3+ -ion-doped thin glass film laid over the first transparent insulating substrate, a thin nonlinear optical film laid over the thin glass film, a second transparent insulating substrate laid over the thin nonlinear optical film, and a thin reflecting film laid over the second transparent insulating substrate, wherein the following conditions are satisfied: nf-ng=0.01 to 0.05, and nf and ng are greater than ns and nc, where ns, ng, nf, and nc are the refractive indices of the first transparent insulating substrate, the thin glass film, the thin nonlinear optical film, and the second transparent insulating substrate, respectively. The optical waveguide generates a laser fundamental harmonic, converts it to a second higher harmonic having a wavelength one-half of the laser fundamental harmonic, and emits the second higher harmonic.
摘要:
A brush-less motor has a center piece, which has a flange portion fixed to a motor holder and a cylindrical portion fixed to a stator core at the outer periphery of the cylindrical portion. The cylindrical portion has a pair of bearings disposed inside the cylindrical portion to rotatably support said shaft. The center piece is formed by a pressing machine to omit a finishing machine work.
摘要:
A brushless motor includes a stator attached to a motor case and a rotor. A circuit substrate is attached to the motor case. The substrate includes an electric circuit, which supplies electric current to the stator thereby rotating the rotor. A fan generates and moves air in accordance with rotation of the rotor. A duct guides some of the air moved by the fan to the stator. A flange extends from the stator. The air guided by the duct flows along the flange. This structure reduces the size of the brushless motor while increasing its power.
摘要:
A method for producing a waveguide for an nonlinear optical device is disclosed. The organic nonlinear optical material 1 is composed of a polymer having the second order nonlinear optical dye moieties substituted for the side chains of the polymer, each end of the optical dye moieties being grafted to the polymer. The optical material 1 is rolled and drawn by rolling rolls 2a, 2b and drawing rolls 4a, 4b, whereby a polymer film 3 is continuously formed, in which the optical dye moieties are oriented in a predetermined direction. Then the resultant polymer films are laminated to be a polymer laminate in which the orientations of the dye moieties are alternately inverted. The polymer laminate is cut in a predetermined direction with a predetermined thickness into a waveguide having a periodic domain structure with a predetermined submicron period or odd number times thereof.
摘要:
An intra-cylinder pressure sensor fault diagnostic device that ensures an opportunity for fault diagnosis in a wide operation region, and can accurately detect an intra-cylinder pressure with a high S/N ratio. The fault diagnostic device for an intra-cylinder pressure sensor, which outputs a value corresponding to an intra-cylinder pressure of an internal combustion engine delays ignition timing so that firing timing comes after a compression top dead center to generate peaks of the intra-cylinder pressure before firing and after firing respectively. When the ignition timing is delayed, at least one of an output value of the intra-cylinder pressure sensor in the peak of the intra-cylinder pressure before firing (hereinafter, called a pre-firing output peak value) and a crank angle thereof is detected. A fault of the intra-cylinder pressure sensor is determined by using at least one of the pre-firing output peak value and the crank angle thereof.
摘要:
An intra-cylinder pressure sensor fault diagnostic device that ensures an opportunity for fault diagnosis in a wide operation region, and can accurately detect an intra-cylinder pressure with a high S/N ratio. The fault diagnostic device for an intra-cylinder pressure sensor, which outputs a value corresponding to an intra-cylinder pressure of an internal combustion engine delays ignition timing so that firing timing comes after a compression top dead center to generate peaks of the intra-cylinder pressure before firing and after firing respectively. When the ignition timing is delayed, at least one of an output value of the intra-cylinder pressure sensor in the peak of the intra-cylinder pressure before firing (hereinafter, called a pre-firing output peak value) and a crank angle thereof is detected. A fault of the intra-cylinder pressure sensor is determined by using at least one of the pre-firing output peak value and the crank angle thereof
摘要:
Provided is an electrodeionization apparatus for producing deionized water, capable of removing or reducing a biased flow of electric current in a deionization chamber. In the electrodeionization apparatus for producing deionized water, at least one deionization treatment unit including the deionization chamber and a pair of concentration chambers adjacent to both sides of the deionization chamber is disposed between a cathode and an anode. In the deionization chamber, anion exchanger layers and cation exchanger layers are stacked in an order in which a last ion exchanger layer through which water to be treated passes is an anion exchanger layer. A bipolar membrane is formed on the cathode side of the anion exchanger layer in the deionization chamber. The anion exchange membrane of the bipolar membrane is in contact with the anion exchanger layer.
摘要:
An electrodeionization apparatus for producing deionized water comprises a deionization treatment unit including deionization chamber D and a pair of concentration chambers C1 and C2 placed adjacent to deionization chamber D on opposite sides thereof and those concentration chambers are filled with anion exchangers. The deionization chamber D is partitioned by an ion exchange membrane into first small deionization chamber D-1 adjacent to concentration chamber C1 and second small deionization chamber D-2 adjacent to concentration chamber C2. First small deionization chamber D-1 is filled with an anion exchanger. Second small deionization chamber D-2 is filled with an anion exchanger and a cation exchanger in a sequence such that the ion exchanger, through which water that is to be treated finally passes, is the anion exchanger.
摘要:
A second line 44 is branched from a first line 22 connected to a processing part 10 configured to process a wafer W. A plurality of third lines (an ammonia-water supply line 48, a hydrochloric-acid supply line 52, and a hydrofluoric-acid line 56) are branched from the second line 44. The third lines are respectively provided with valves 48a, 52a, and 56a at locations branched from the second line 44. Chemical-liquid supply sources (an ammonia-water supply source 46, a hydrochloric-acid supply source 50, and a hydrofluoric-acid supply source 54) are connected to the respective third lines, whereby chemical liquids can be supplied from these chemical-liquid supply sources to the respective third lines.
摘要:
A process liquid supply system of the present invention includes: a pure water supply source connected to a process vessel through a supply pipe; a chemical liquid tank that stores a chemical liquid and supplies the chemical liquid stored therein to the supply pipe; and a compressed gas supply source connected to the chemical liquid tank through a compressed gas supply pipe, the compressed gas supply source supplying a compressed gas to the chemical liquid tank to supply the chemical liquid from the chemical liquid tank to the supply pipe. A pressure adjusting part is disposed on the compressed gas supply pipe at a position between the compressed gas supply source and the chemical liquid tank. The pressure adjusting part adjusting a pressure of the compressed gas supplied from the compressed gas supply source. The pressure adjusting part is controlled in such a manner that a pressure of the compressed gas supplied from the compressed gas supply source to the chemical liquid tank is gradually or stepwise increased after the supply of the chemical liquid from the chemical liquid tank to the supply pipe is started.