摘要:
An aberration measuring apparatus has a converging lens L disposed on the light path of light beam to converge light beam traveling through a measurement target optical system PL on a predetermined surface IP, an aperture stop AP disposed on the light path of light beam to transmit a part of the light beams, a converging position detection unit DET disposed on the predetermined surface to detect a positional deviation of a converging position P of a part of the light beams traveling through the aperture stop on the predetermined surface IP, a moving unit M connected the aperture stop to move the aperture stop within the light beam, and an arithmetic processing unit connected the converging position detection unit to calculate an aberration of the measurement target optical system PL on the basis of an output signal from the converging position detection unit DET.
摘要:
A snowmobile having a lightweight fabricated frame assembly. The frame assembly includes a number of reinforcing elements, some of which comprise heat exchangers for the liquid cooling system of the engine, so as to provide high rigidity and light weight. The engine of the snowmobile is provided with an exhaust system that permits a relatively short effective length, but minimizes pulse-back effects by forming internal expansion chambers around the exhaust branch pipes. The drive for the snowmobile includes a reversing transmission and a brake assembly associated therewith in addition to a main brake assembly for the snowmobile. Furthermore, there is provided a parking brake assembly that is easy to operate and which will provide the operator with a visual and physical warning of its condition so that the operator will not attempt to operate the snowmobile with the parking brake engaged.
摘要:
A digital receive signal is sampled by an A/D converter, and the position of a point at which the receive signal crosses a reference level is obtained in response to sampling data by an exclusive OR gate. A phase interval between the present sampling point and the point at which the receive signal crosses the reference level is obtained by an arithmetic circuit, and the phase of the present sampling point is obtained in accordance with the position of the crossing point, the phase interval P between the present sampling point and the crossing point obtained by arithmetic circuit, the phase of a preceding sampling point obtained by an I-bit parallel delay circuit, and the phase of a sampling point which is two points preceding to the present sampling point and obtained by an I-bit j-stage parallel delay circuit. A data detection clock signal and digital data are detected in accordance with the computed phase of each sampling point, an MSB of sampling data, and the phase interval between the present sampling point and the point at which the receive signal crosses the reference level.
摘要:
A water swellable resin composition comprises a water swellable resin and a medium such as a plasticizer, solvent, resin or resin solution. The resin is an alkali metal salt and/or hydrophilic amine salt of a copolymer of hydrophobic polymer chains having an .alpha.,.beta.-ethylenically-unsaturated group at end thereof and a monomer composed principally of (meth)acrylic acid.
摘要:
A rotary type electrostatic spray painting device including a rotary shaft driven by an air turbine. A reflecting face portion and a non-reflecting face portion are formed on the rear end face of the rotary shaft. A rotating speed sensor is arranged adjacent to the rear end face of the rotary shaft to detect the rotating speed of the rotary shaft from light reflected from the reflecting face portion. The amount of pressurized air fed into the air turbine is controlled in response to the output signal of the rotating speed sensor so that the rotating speed of the rotary shaft becomes equal to a desired rotating speed.
摘要:
There is provided a new pigment composition composed of a pigment and a dispersant wherein the dispersant is a phosphoric ester compound represented by the formula below. ##STR1## (where one or more than one of the three R's are residues of a hydroxy-carboxylic acid and/or hydroxy ester thereof; and one or two of the three R's, in case of being remained, are hydrogen atoms, cations, or residues of an alcohol excluding the above-mentioned residues.)
摘要:
A hydrophilic polymer comprises a main component of a block copolymer and/or a graft copolymer which has at least one hydrophobic hard segment-hydrophilic segment-hydrophobic hard segment unit wherein said hydrophobic hard segment is a binding phase segment having an average molecular weight of more than 1,000 and said hydrophilic segment is a segment having a hydrophilic group connected to thioether bond on a side chain and having an average molecular weight of more than 1,000.
摘要:
To provide an improved solderability for mounting an electronic component onto a circuit board, a package of an electronic component (1) is formed by bonding together a base (3) made of glass and a lid (2). Outer electrodes (8) and (18) are formed on a bottom surface of the base (3), and the outer electrodes (8) and (18) are respectively connected to through electrodes (7) and (17). The outer electrodes (8) and (18) each have a laminated structure of three CrAu layers, that is, from a Cr layer (first layer) to an Au layer (sixth layer). When the outer electrodes (8) and (18) are soldered onto a circuit board, the Au layers as the second, fourth, and sixth layers are dissolved into solder, whereas the Cr layers as the third and fifth layers, which hardly form an intermetallic compound with solder, are separated to remain in solder.
摘要:
A data storage medium support member is produced by resin molding. The data storage medium support member includes an accommodating portion, a guide portion, and a gate cut portion. The accommodating portion accommodates a magnetic member around a central axis. The guide portion has a guide surface for guiding an inner edge of a disc, and is arranged radially outward of the accommodating portion. The gate cut portion is formed on a rear surface of the guide portion. The data storage medium support member can be produced by the resin molding while securing space for accommodating the magnetic member and preventing an increase in the axial dimension of the data storage medium support member.
摘要:
An electronic-parts package includes a base member, a conductive member extending through the base member, the conductive member having the insulating substance on the surface removed by polishing, electronic parts disposed on one surface of the conductive member through a connection portion, an exterior electrode disposed through a metal film on the opposite surface of the surface of the base member on which the electronic parts is disposed, and a cap member that protects the electronic parts on the base member.