Abstract: 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.

Abstract: 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.

Abstract: According to an embodiment, a battery module includes cells each including a housing body including a bottom surface, a pair of main surfaces, and a pair of side surfaces, and a lid member opposed to the bottom surface and having electrode terminals; a case in which the cells are housed; conductive members electrically connecting the electrode terminals of the cells; and a wiring board placed at the upper portion of the conductive members on the case. The cells include a first group including cells stacked along a first direction, and a second group including cells stacked along a second direction. The side surfaces of cells of the first group are opposed to the main surfaces of the cells of the second group. The first group and the second group are connected in series.

Abstract: Disclosed is an optical pickup including: an actuator supporting a lens holder holding an objective lens and a yoke base including a predetermined insert and holding a magnet for driving magnetically the lens holder; a head base having an opening into which the insert of the yoke base is inserted formed, and supporting the actuator in a state where the insert is inserted into the opening; and a joint joining an edge of the opening formed in the head base and the insert of the yoke base inserted into the opening to each other.

Abstract: An objective lens actuator according to the present invention includes: an objective lens; a lens holder that fixes the objective lens; a pair of tracking coils; a pair of radial tilt coils; a pair of focus coils superimposed and attached to the radial tilt coils; a pair of tracking magnets disposed so as to face the tracking coils; and a pair of the focus magnets disposed so as to face the focus coils. The pair of the focus coils and the pair of the focus magnets are each asymmetric in at least one of shape, size, mass, and location, and each have balanced moments about the radial tilt axis.

Abstract: An overhang type objective-lens actuator includes an objective lens for focusing laser light onto an optical disk, a substantially tongue-shaped lens holder formed of a magnesium alloy and having a circular opening in which the objective lens is mounted, the circular opening being provided near a front end of the lens holder, a fixed unit disposed such as to face a bottom face and a rear end face of the lens holder, a plurality of suspension wires for suspending the lens holder, the suspension wires being fixed at one end to the lens holder and at the other end to the fixed unit, a plurality of coils and a plurality of magnets for driving the lens holder in a tracking direction, a focus direction, and a tilting direction, and a plurality of damper weights bonded to an outer peripheral surface of the lens holder.

Abstract: A first magnetic pole surface having N and S poles neighboring in a focus direction and a second magnetic pole surface having N and S poles neighboring in a tracking direction are formed on the same surface. A focus coil and a radial tilt coil are arranged to cross a magnetic flux formed by the first magnetic pole surface. A tracking coil is arranged to cross a magnetic flux formed by the second magnetic pole surface.

Abstract: A disc cartridge according to an aspect of the present invention allows easy draw out and insertion of an optical disc from/into a cartridge, and has a main wall opposite to one surface of an optical disc, a side wall provided in the circumference of the main wall, a disc holding claw extending from the side wall just like holding the optical disc between the main wall, and a handling area.

Abstract: A disk cartridge which contains an optical disk, comprising a first half shell, and a second half shell which is openable against the first half shell, wherein the first half shell is formed with notches to expose a part of the circumference of the optical disk.

Abstract: 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.

Abstract: 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 (1) supported on a support block (6) supports the objective lens (1) by a support device (110) having a pair of support members (122, 124) disposed in a plane (120) perpendicular to the optical axis (1a) of the objective lens (1). First parts (122a, 124a) of the pair of support members (122, 124) are fixed to a lens holder (2) holding the objective lens (1), and second parts (122b, 124b) are fixed to the support block (6).

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.