Victor Company of Japan, Limited

Hitachi, Ltd.

Jvc Kenwood Corporation

University of Alabama

Takayuki Iseki

Hideo Fujiwara

Koichi Nishioka

Katsuhiko Oguri

Shingo Yagyu

Provided is a light-scanning device may be designed to have a high resonance frequency and a large scanning angle. A mirror unit vibrates by using an arbitrary straight line as a rotation axis. A pair of first beam portions are disposed on a straight line that is parallel to the rotation axis, and support the mirror unit. A pair of second beam portions are disposed so as to be line-symmetrical to the pair of the first beam portions about the rotation axis as an axis of symmetry, and support the mirror unit. A pair of first arm portions respectively support the pair of first beam portions. A pair of second arm portions respectively support the pair of second beam portions. A pair of third beam portions support the mirror unit between the first beam portions and the second beam portions.

Light scanning device and display apparatus

A magnetron sputtering apparatusis composed of a vacuum chambera targeta cathodethat holds the targetin the vacuum chambera substratean anodethat holds the substrateand is allocated above the cathodeso as to face the substratetoward the targeton the cathodea permanent magnetthat generates magnetic fieldand is allocated under the cathodeand a rotation controllerfor rotating the permanent magnetso as to pivot on a center axis of the targetThe permanent magnetis further composed of a basea first permanent magnetthat is fixed on the basein the middle and a second permanent magnetin a ring shape that is fixed in an external circumferential area of the baseso as to surround the first permanent magnetwherein a magnetic polarity of the second permanent magnetis inverse with respect to that of the first permanent magnetand magnetic field strength of the second permanent magnetis weaker than that of the first permanent magnetand further an upper portion of the permanent magnetis in a cylindrical shape of which top portion is cut diagonally.

Magnetron sputtering apparatus

A surface acoustic wave actuator has a mover arranged on a first surface of a piezoelectric board and comb-shaped electrodes formed on the first surface. High frequencies are applied to the comb-shaped electrodes to generate Rayleigh waves that move the mover. In the surface acoustic wave actuator, the com-shaped electrodes include first to fourth electrodes formed on the first surface of the piezoelectric board, the first and third comb-shaped electrodes being on each side of the mover on an X-axis, the second and fourth comb-shaped electrodes being on each side of the mover on a Y-axis. The mover at least has a permanent magnet. The surface acoustic wave actuator further has a unit to selectively apply a high frequency to at least one of two electrodes one selected from the first and third comb-shaped electrodes and the other from the second and fourth comb-shaped electrodes. The surface acoustic wave actuator also has a mover holder facing the mover with the piezoelectric board interposed therebetween. The mover holder at least has a magnetic material configured to hold the mover.

Surface acoustic wave actuator and deflector employing the same

A light deflection element has a pair of oscillating elements (,) and (,) having arms (,) and (,), and (,) and (,). respectively, the outer ends of which are fixed to a pair of supports (,) and (,) of a base (,), and the inner ends of which are free ends, a reflective mirror (,) disposed between arms (,) and (,), and arms (,) and (,) of the pair of oscillating elements (,) and (,), pairs of torsion springs (,and,) and torsion springs (,) and (,), linking the inner ends of the arms (,) and (,) and the inner ends of the arms (,) and (,), respectively, at a pair of positions that are symmetrical about an axis (L) that passes through the center of gravity of the reflective mirror, and a drive apparatus (D) for applying a drive force separately and independently to the oscillating elements (,) and (,), so as to move the inner ends of the arms (,), (,), (,), and (,) upward and downward separately and independently.

Light deflection element and display apparatus using same

A spin-valve read head of the giant magnetoresistive type in a data storage system has at least one magnetic thin film layer comprising a plurality of magnetic thinner film layers of ferromagnetic material with the same crystal plane orientation from one magnetic thinner film to another, and an interface between adjacent magnetic thinner films having a discontinuity in single-crystal epitaxial growth. Each magnetic thinner film layer is composed of an alloy including each of Fe, Ni and Co and has a weight ratio of Co:Fe equal to 90:10. The crystal has a crystal structure that is face centered cubic and a crystal plane orientation (111) that is highly ordered. The interfaces may be layers of Ni or Cu. The layers all exhibit a condition of magnetic orientation and annealed structure resulting from being annealed and cooled in a magnetic field sufficiently to have an anisotropic energy of the first magnetic thin film layer in an equilibrium state that is smaller than an identical structure before annealing.

Growing community of inventors

Yokohama, Japan

Takayuki Iseki