Kabushiki Kaisha Toshiba

Toshiba Infrastructure Systems & Solutions Corporation

Makoto Nagasato

Masafumi Ebisawa

Norio Shimizu

Shinichiro Kosugi

Masahiro Sekino

Hirofumi Yamamoto

Kenji Shigehisa

Kenji Yazawa

Ryousuke Kasaya

Takahiro Kokubo

Hideo Yamasaki

Masasumi Yana

Mineharu Uchiyama

Tatsumi Matsuo

Battery module

According to one embodiment, a battery module includes a plurality of batteries and a module housing. The module housing accommodates the plurality of batteries. The module housing is configured by connecting a plurality of cases in a first direction. At least one of the plurality of cases includes a vacuum pad adsorption region which is on an end surface in a second direction intersecting the first direction and on which a vacuum pad is adsorbable.

An optical recording/reproducing apparatus for recording/reproducing information onto/from an optical recording medium includes an optical element for condensing a light beam onto the recording medium. A detector coupled to the optical element detects a tilt condition between the recording medium and the optical element. The detector irradiates a detection beam onto the recording medium through the optical element, and detects the detection beam reflected by the recording medium through the optical element.

Tilt detector for optical disk recording/reproducing apparatus

An objective lens driving device is capable of efficiently and quickly correcting the tilt of an objective lens relative to a signal recording surface of an optical disk so that comatic aberration of a spot of a light beam formed on the signal recording surface of the optical disk is reduced. The objective lens driving device for driving an objective lens (,) supported on a support block (,) supports the objective lens (,) by a support device (,) having a pair of support members (,) disposed in a plane (,) perpendicular to the optical axis (,) of the objective lens (,). First parts (,) of the pair of support members (,) are fixed to a lens holder (,) holding the objective lens (,), and second parts (,) are fixed to the support block (,). The rigidity, which represent the degree of difficulty in turning the objective lens (,) about an axis perpendicular to the optical axis (,) of the objective lens (,) and longitudinal axis of the support member (,), of the first part (,) of each support member (,) is lower than that of the second part (,) of the same support member (,) connected to the support block (,).

Objective lens mounting apparatus and objective lens driving apparatus

An optical head drive device for driving an optical head in a tracking direction and a focusing direction, comprising a pair of first tracking leaf spring members provided such that the respective one end sides are fixed to a fixing member, and structured to be elastically deformable to the tracking direction on a basis of the fixing section as a base end, a pair of second tracking leaf spring members provided such that the respective one end sides are coupled to the optical head, having substantially the same spring effective length and spring constant as the first tracking leaf spring member, and structured to be elastically deformable to the tracking direction, and coupling members for coupling the respective other end sides of the first tracking leaf spring members and the second tracking leaf spring members.

Optical head driver

An objective lens driving apparatus for driving, in a focus direction and a tracking control direction, an objective lens for converging light onto an optical recording medium, includes a lens bobbin for holding the objective lens. The lens bobbin is provided with two types of drive coils for driving the lens bobbin in the focus and tracking control directions. The lens bobbin is attached in a floating state to a magnetic yoke by a pair of suspensions functioning as cantilevers. The magnetic yoke is provided with a magnet for generating a magnetic field. The lens bobbin is situated such that the drive coils are placed within the magnetic field. Each of the suspensions consists essentially of a rectangular metal frame having a plurality of plate spring portions defined in planes perpendicular to the focus and tracking control directions. A number of through holes are formed in the plate spring portions.

Objective lens driving apparatus and optical head driving apparatus

In an optical head which comprises a focusing unit section for moving an objective lens, used to focus a light beam on a recording medium, in a direction perpendicular to the recording medium, and a tracking unit section for moving the focusing unit section in a direction perpendicular to an information track on the recording medium, a lens holder for supporting the objective lens is fixed to two leaf springs, and a carriage body is disposed between the two leaf springs. The leaf springs and the central portion of a tracking coil are fixed to the carriage body. The tracking coil has stepped portions at its central portion, and its whole structure except the central portion is flat.

Electro-magnetic actuator for driving an objective lens

In an electro-magnetic actuator, a pair of magnetic circuits are separately arranged in a tracking direction and a carriage is located between the magnetic circuits and is movably supported or guide rails extending along the tracking direction. On the carriage, a lens holder for holding an objective lens is movably suspended and focusing coils are fixed on side surfaces of the lens holder. A tracking coil is fixed in the carriage and is extended in the magnetic circuit. Focusing permanent magnets of the magnetic circuits are so extended along the tracking direction as to produce, focusing magnetic fluxes penetrating the focusing coil and leakage magnetic fluxes penetrating the tracking coil. A focus drive force is generated by an interaction between a current supplied to the focusing coil and the focusing magnetic fluxes and a biasing track drive force is generated by an interaction between a current supplied to the tracking coil and the leakage magnetic fluxes.

Electromagnetic actuator and optical disk apparatus incorporating the

An optomagnetic disk apparatus includes a holder for holding a cartridge which stores an optomagnetic disk therein and which is moved while a cartridge having an openable shutter is held therein. Shutter openers for opening/closing the shutter are movably arranged on the holder. A wire is looped between the shutter openers. Ends of the wire are fixed to the frame. When the holder is moved, the wire is pulled, and the shutter openers are selectively moved to open/close the shutter. The optomagnetic disk apparatus also includes a magnet unit for applying an external magnetic field to the optomagnetic disk when information is erased from or written in the optomagnetic disk. The magnet unit has a flat sectional shape and is rotatable.

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Yokohama, Japan

Makoto Nagasato