摘要:
The present invention discloses a manufacturing method for polarization maintaining optical fiber couplers which are used for joining light signals and at optical fiber branch points. The disclosed manufacturing method employs polarization maintaining optical fibers, and describes a method for mutually aligning the stress applying parts of such optical fibers so that polarized optical signals are maintained in the polarized state when transiting such couplers.
摘要:
In a method of testing a spliced portion of exposed fiber portions of optical fibers, the optical fibers are arranged with each other in line so that ends of the exposed fiber portions are spaced apart from each other by a predetermined distance. The ends of the exposed fiber portions are heated and melted by discharge heating. The optical fibers are then moved in the abutment or closing directions by a predetermined distance, so that the ends of the exposed fiber portions abut against each other to form a spliced portion. The minimum outer diameter value d of the spliced portion is measured. Ratio d/D of minimum value d to value D of the outer diameter of exposed fiber portion is calculated. Spliced portions having splicing defects can be detected by detecting of spliced portions having ratio d/D of less than 1 (d/D
摘要:
A tool monitoring system for detecting a tool failure of a tool employed in a tool machine, comprising artificial signal generating unit for generating a predetermined artificial tool failure signal simulating the acoustic emission signal obtained in an actual failure of the tool, acoustic emission transducing unit adapted to be mounted on the tool machine near the tool and driven by the artificial signal generating unit for applying the artificial tool failure signal to the tool machine, acoustic emission sensing unit mounted on the tool machine near the tool so as to receive, in a setting mode of the system where the transducing unit is mounted on the machine, the applied artificial tool failure signal from the acoustic emission transducing unit through the tool machine and, in a monitoring mode of the system where the tool is operated, an acoustic emission from the tool, and signal processing unit for analyzing an output signal generated from the acoustic emission sensing unit to detect the tool failure of the tool.
摘要:
.theta.-clamp also serves as a jacket clamp. The clamp comprises a cover mounted on an arm by a hinge and kept closed by a magnet, so that a pusher provided in the cover is urged against a jacketed portion of an optical fiber by a spring. In this state, the fiber is rotated in a .theta. direction by rotating a dial. .theta.-clamp also serves as a jacket clamp. Therefore, 1. The .theta.-clamp can be positioned close to a fiber clamp. For this reason, the optical fiber is not twisted during .theta.-axes alignment, and a follow-up property of rotation of the optical fiber with respect to rotation of the .theta. axis is improved. In addition, the apparatus need not be adjusted so as not to twist the optical fiber. 2. The distance between fiber clamp and .theta.-clamp is shortened. Therefore, when the optical fiber is clamped and moved in the z direction, the jacketed portion is not flexed. For this reason, a follow-up property of movement of the end face of the optical fiber with respect to movement of a table in the z-axis direction is improved.
摘要:
The fins of an aluminum heat exchanger are treated with a coating composition comprising an alkali silicate and a low-molecular-weight compound having carbonyl and are thereafter heated for drying, whereby a hydrophilic coating is formed over the surfaces of the fins.
摘要:
A new subjective phorometer which can be a desk-type one in which all the measuring means are set on the desk plate and all the procedures for measuring vision data of eyes are carried out by control switches on the desk, and all the data measured are displayed digitally on a monitor, and printed out.The subjective phorometer comprises (1) the same measuring elements as conventional subjective phorometers, (2) a number of pulse motors, electro-magnetic clutches having a double-shafts mechanism, and direct current motors for driving the measuring elements and a number of sensors for detecting the zero position of the measuring elements, (3) a central processing unit and control switches for control driving of the pulse-motors, electro-magnetic clutches, and direct current motors, and (4) a monitor for displaying digitally the vision data measured, and (5) a printer for printing the data.
摘要:
An automatic apparatus for loading and feeding crucibles to and removing crucibles from a combustion furnace in which metals are burned for analyzing them. The apparatus has a part for automatically transporting crucibles to a sample weighing position one by one, a sample weighing device at the sample weighing position, and a supply device for placing the desired quantity of metal to be analyzed into crucibles at the sample weighing position. A storage device for automatically storing crucibles containing samples therein extends from the sample weighing position, and a device takes crucibles out of the storage device one by one and a further device automatically takes the crucibles from said taking out device and introduces them into a combustion furnace and removes the crucibles from the combustion furnace. A device then automatically dumps the crucibles removed from the combustion furnace after the completion of analysis. The storage device has a carrying trough for holding a line of crucibles, a stop at the downstream end of the carrying trough and movable into and out of engagement with the crucible at the downstream end of the carrying trough, and a pusher for pushing crucibles from the sample weighing position along the carrying trough and having a device for discontinuing the pushing action of said pusher when a crucible being pushed engages the stop or a crucible preceeding a crucible stopped by the stop.
摘要:
An organic electroluminescent device excellent in light emission efficiency and driving voltage, having electrodes composed of an anode and a cathode, a first organic layer arranged in contact with or adjacent to the anode between the electrodes and containing a hole transporting polymer compound and a second organic layer arranged in contact with the first organic layer between the first organic layer and the cathode and containing an electron transporting polymer compound, wherein the hole transporting polymer compound and the electron transporting polymer compound are regulated by specific parameters, at least one of the first organic layer and the second organic layer contains a light emitting material regulated by specific parameters, and light of specific color is emitted from the first organic layer or from the first organic layer or the second organic layer.
摘要:
A light emitting material included in a light emitting device. The light emitting material includes a conjugated polymer having a conjugated part and a blue light emitting compound having a blue light emitting part and satisfies the following formula y≧log10(5.1×x0.2+1), wherein y represents the amount of light emitted by the blue light emitting compound where the total amount of light emitted by the conjugated polymer and the blue light emitting compound in the light emitting material due to excitation caused by light having a wavelength of 370 nm is 1, and provided that the gram light absorption coefficient of the conjugated polymer and the blue light emitting compound in the light emitting material are expressed by ε1 and ε2, and further the content of the blue light emitting compound is expressed by P2 (parts by mass) where the total content of the conjugated polymer and the blue light emitting compound in the light emitting material is 100 parts by mass, x is defined by the formula: X=(ε2/ε1)×P2 corresponds to x.
摘要:
A hermetically sealing device includes a conductive seal member (2) which is integrated with a conductive member (1) extending into a casing (3) and seals a space between the conductive member (1) and an inserting section for the conductive member (1) on the casing (3). In the conductive member (1), an electromagnetic wave shield layer (11) is laminated on a cover film which protects the surface of a base film having a circuit pattern, an insulating layer (12) is laminated on the electromagnetic wave shield layer (11), the insulating layer (12) has an opening section (12a) such that a part of the flat section of the electromagnetic wave shield layer (11) is exposed, and the seal member (2) is integrated with the conductive member (1) to cover the opening section (12a) and is brought into contact with the electromagnetic wave shield layer (11) through the opening section (12a).