摘要:
In vehicle headlamp control apparatuses, which receive a direct current voltage Es, light discharge lamps by square waves, and drive motors, in each of which the number is at least one, arithmetic operations are performed for synchronizing the square waves for lighting the discharge lamps and pulses for driving the motors with each other and for driving the motors within a substantially constant time after polarities of the square waves for lighting the discharge lamps are inverted. By using an inexpensive microcomputer, the vehicle headlamp control apparatuses make it possible to realize lighting controls for the discharge lamps and smooth drive controls for headlamps and auxiliary lamps by the motors for varying optical axes thereof.
摘要:
The method of charging a lithium ion secondary battery uses a lithium ion secondary battery comprising a positive electrode including a mixed metal oxide containing at least Li, Mn, and Ni as metal components as a positive electrode active material, a negative electrode, and a nonaqueous electrolytic solution containing a lithium salt; and includes a constant current charging step of carrying out constant current charging with a set charging current value I1 corresponding to a set value nC satisfying the condition represented by the expression of 2C≦nC≦60C, where C is a rated capacity value of the lithium ion secondary battery, and n is a number of 2 to 60.
摘要:
A surface acoustic wave (SAW) device includes a piezoelectric substrate, a first and a second interdigital transducers (IDT) provided thereon. The second IDT has a side that is substantially aligned with a corresponding side of the first IDT, and another side of the second IDT is arranged so that the second IDT may adjust a leaked wave caused resulting from by a power-flow angle of the piezoelectric substrate.
摘要:
A low-cost artificial fingerprint liquid for quantitatively and with a good reproducibility evaluating an anti-staining property, and a fingerprint adhering property or a fingerprint removing property on the surface of an optical disk such as a reproduction-only optical disk, optical recording disk, magneto-optical recording disk, various displays such as a CRT, and various substances such as glass including a fine-particle-form substance and a dispersion medium capable of dispersing the fine-particle-form substance.
摘要:
The present invention provides a low-cost artificial fingerprint liquid for quantitatively and with a good reproducibility evaluating an anti-staining property, and a fingerprint adhering property or a fingerprint removing property on the surface of an optical disk such as a reproduction-only optical disk, optical recording disk, magneto-optical recording disk, various displays such as a CRT, and various substances such as glass. An artificial fingerprint liquid comprising a fine-particle-form substance and a dispersion medium capable of dispersing the fine-particle-form substance. The dispersion medium preferably has a surface tension ranging from 20 to 50 mN/m at 25° C., and preferably is selected from at least one of higher fatty acid, derivative of higher fatty acid, terpens, and derivatives of terpens. The fine-particle-form substance is at least one selected from inorganic fine particles and organic fine particles. The present invention provides a testing method for an optical information medium using the artificial fingerprint. The present invention provides an optical information medium which is good in the property of wiping off an organic stain, such as a fingerprint, adhering to a surface of the optical recording medium and which can maintain good recording/reproducing property over a long period.
摘要:
A surface acoustic wave device includes a piezoelectric substrate, a first and a second interdigital transducers (IDTs) provided on the piezoelectric substrate. The first IDT includes multiple tracks having different frequency characteristics that are connected in parallel. The second IDT includes a normalized electrode pattern. The frequency characteristic of the multiple tracks is asymmetric to a center frequency of the SAW filter, substantially flat in a passband when those of the multiple tracks are overlapped, or complementary in the passband. Thus, it is possible to provide the surface acoustic wave device having a high damping property.
摘要:
A surface acoustic wave device includes a piezoelectric substrate, at least one interdigital transducer (IDT) provided on the piezoelectric substrate, and a shield electrode provided on the piezoelectric substrate. The IDT has a first pattern on an edge that faces the shield electrode. The shield electrode has a second pattern on an edge so as to be evenly spaced apart from the first pattern.
摘要:
An optical information medium has a light-transparent substrate and an information recording layer, wherein optical recording and/or reading is performed with a laser beam that enters the information recording layer from the light-transparent substrate side. A cured polysilazane film is disposed on the laser beam incident side of the light-transparent substrate, and the light-transparent substrate or the light-transparent substrate having the cured polysilazane film integrated thereon has a tensile modulus of at least 200 MPa. The medium on its laser beam incident side surface is improved in mar resistance.
摘要:
An optical disk substrate of resin, comprising a center hole and being composed of an inner circular-projected portion and an outer flat circumferential portion, the inner circular-projected portion having a circular projection projecting from at least one major surface of the substrate, the maximum height of the circular projection measured from the major surface of the outer flat circumferential portion being equal to or larger than 0.5 mm, the optical disk substrate is designed to satisfy the following equation or inequality:V/V.sub.0
摘要:
An optical recording disk includes a resin substrate having a recording layer thereon and a protective glass substrate, which are joined into an integral disk such that the recording layer is inside. The resin substrate is formed of a resin composition comprising a specific cyclic polyolefin and an optional alkyl phenol condensate. The resulting lightweight, rigid disk is adapted for recording/reproducing operation at high rotational speeds with few focusing errors due to minimized axial runouts.