Abstract: Miniaturization by simplification of a structure is achieved while suppressing a bound of an opening/closing blade and securing improvement of functionality. A blade opening/closing apparatus includes: a base body that includes an aperture; a driving body that is movably supported by the base body and is operated by a driving force of a drive source; an opening/closing blade that is moved by an operation of the driving body and opens/closes the aperture; and a braking body that controls a movement speed of the opening/closing blade via the driving body, the driving body including, on one surface thereof, an engagement portion that is to be engaged with the opening/closing blade and transmits the driving force to the opening/closing blade, the driving body including, on another surface thereof, a braked portion to which a braking force of the braking body is to be applied.

Abstract: Miniaturization by simplification of a structure is achieved while suppressing a bound of an opening/closing blade and securing improvement of functionality. A blade opening/closing apparatus includes: a base body that includes an aperture; a driving body that is movably supported by the base body and is operated by a driving force of a drive source; an opening/closing blade that is moved by an operation of the driving body and opens/closes the aperture; and a braking body that controls a movement speed of the opening/closing blade via the driving body, the driving body including, on one surface thereof, an engagement portion that is to be engaged with the opening/closing blade and transmits the driving force to the opening/closing blade, the driving body including, on another surface thereof, a braked portion to which a braking force of the braking body is to be applied.

Abstract: A light amount adjusting device includes: a cover plate having a light-passing hole; a first separator being sheet-shaped and having a hole; a second separator being elastically deformable and sheet-shaped, positioned on a side opposite to the cover plate with the first separator therebetween, and having a hole; a first light amount adjusting blade movable between the cover plate and the first separator; a second light amount adjusting blade being movable between the first separator and the second separator; a base body to which the cover plate, the first separator, and the second separator are mounted, having a throughhole and mounting grooves, the throughhole being formed to have a diameter larger than a diameter of the hole of the second separator, the mounting grooves allowing the second separator to be mounted therein and being opened toward the throughhole.

Abstract: A light amount adjusting device includes: a cover plate having a light-passing hole; a first separator being sheet-shaped and having a hole; a second separator being elastically deformable and sheet-shaped, positioned on a side opposite to the cover plate with the first separator therebetween, and having a hole; a first light amount adjusting blade movable between the cover plate and the first separator; a second light amount adjusting blade being movable between the first separator and the second separator; a base body to which the cover plate, the first separator, and the second separator are mounted, having a throughhole and mounting grooves, the throughhole being formed to have a diameter larger than a diameter of the hole of the second separator, the mounting grooves allowing the second separator to be mounted therein and being opened toward the throughhole.

Abstract: A light amount adjusting device includes: a cover plate having a light-passing hole; a first separator being sheet-shaped and having a hole; a second separator being elastically deformable and sheet-shaped, positioned on a side opposite to the cover plate with the first separator therebetween, and having a hole; a first light amount adjusting blade movable between the cover plate and the first separator; a second light amount adjusting blade being movable between the first separator and the second separator; a base body to which the cover plate, the first separator, and the second separator are mounted, having a throughhole and mounting grooves, the throughhole being formed to have a diameter larger than a diameter of the hole of the second separator, the mounting grooves allowing the second separator to be mounted therein and being opened toward the throughhole.

Abstract: Disclosed herein is a light amount adjustment apparatus, including: a shutter blade and a filter blade each configured to operate in a predetermined direction to adjust the amount of light transmitted through a lens group; a first magnet configured to drive the shutter blade; a first core and a first coil; a second magnet configured to drive the filter blade; and a second core and a second coil. The filter blade has a control portion for controlling and adjusts the amount of light transmitted through the lens group. The filter blade has at least one hole or one cutaway portion formed at a portion of the filter blade other than the control portion.

Abstract: An optical pickup includes a lens holder holding an objective lens for converging a light beam on a signal recording layer of an optical disk; elastic support members supporting the lens holder such that the lens holder can freely move in three driving directions, i.e., a tracking direction, a focusing direction, and a tilting direction; a pair of coil units attached to two sides of the lens holder, the two sides being spaced in a tangential direction orthogonal to the focusing direction and tracking direction; and a pair of magnets arranged to face the corresponding coil units. Each coil unit includes a tracking coil, a focusing coil, and a tilting coil for driving the lens holder in the three driving directions. The focusing coil and the tilting coil are formed by winding a focusing conductor of the focusing coil and a tilting conductor of the tilting coil together in parallel.

Abstract: Disclosed herein is a light amount adjustment apparatus, including: a light amount adjustment member; a rotatable magnet formed in a disk shape; a driving arm configured to be pivoted by rotation of the magnet to operate the light amount adjustment member; a core having a pair of confronting portions positioned so as to sandwich the magnet from an outer circumference side and a connecting portion configured to connect end portions of the confronting portions to each other; a coil through which one of the portions of the core extends; and a base member having the core attached to the base member and supporting the magnet for rotation on the base member. The base member has a plurality of attaching projections provided at least at two places of the base member for attaching the core to the base member. The attaching projections have a small projection for fitting with the core.

Abstract: A light amount adjusting device includes: a cover plate having a light-passing hole; a first separator being sheet-shaped and having a hole; a second separator being elastically deformable and sheet-shaped, positioned on a side opposite to the cover plate with the first separator therebetween, and having a hole; a first light amount adjusting blade movable between the cover plate and the first separator; a second light amount adjusting blade being movable between the first separator and the second separator; a base body to which the cover plate, the first separator, and the second separator are mounted, having a throughhole and mounting grooves, the throughhole being formed to have a diameter larger than a diameter of the hole of the second separator, the mounting grooves allowing the second separator to be mounted therein and being opened toward the throughhole.

Abstract: A light amount adjusting device includes: a cover plate having a light-passing hole; a first separator being sheet-shaped and having a hole; a second separator being elastically deformable and sheet-shaped, positioned on a side opposite to the cover plate with the first separator therebetween, and having a hole; a first light amount adjusting blade movable between the cover plate and the first separator; a second light amount adjusting blade being movable between the first separator and the second separator; a base body to which the cover plate, the first separator, and the second separator are mounted, having a throughhole and mounting grooves, the throughhole being formed to have a diameter larger than a diameter of the hole of the second separator, the mounting grooves allowing the second separator to be mounted therein and being opened toward the throughhole.

Abstract: Disclosed herein is a light quantity adjusting device including a base formed with a window; first and second diaphragm blades provided on the base and adapted to adjust a size of a diaphragm aperture; first and second cam-pins adapted to shift the first and second diaphragm blades; and a plurality of guide pins provided on the base so as to project therefrom.

Abstract: Disclosed herein is a light amount adjustment apparatus, including: a light amount adjustment member; a rotatable magnet formed in a disk shape; a driving arm configured to be pivoted by rotation of the magnet to operate the light amount adjustment member; a core having a pair of confronting portions positioned so as to sandwich the magnet from an outer circumference side and a connecting portion configured to connect end portions of the confronting portions to each other; a coil through which one of the portions of the core extends; and a base member having the core attached to the base member and supporting the magnet for rotation on the base member. The base member has a plurality of attaching projections provided at least at two places of the base member for attaching the core to the base member. The attaching projections have a small projection for fitting with the core.

Abstract: Disclosed herein is a light amount adjustment apparatus, including: a shutter blade and a filter blade each configured to operate in a predetermined direction to adjust the amount of light transmitted through a lens group; a first magnet configured to drive the shutter blade; a first core and a first coil; a second magnet configured to drive the filter blade; and a second core and a second coil. The filter blade has a control portion for controlling and adjusts the amount of light transmitted through the lens group. The filter blade has at least one hole or one cutaway portion formed at a portion of the filter blade other than the control portion.

Abstract: A light amount adjusting device includes: a cover plate having a light-passing hole; a first separator being sheet-shaped and having a hole; a second separator being elastically deformable and sheet-shaped, positioned on a side opposite to the cover plate with the first separator therebetween, and having a hole; a first light amount adjusting blade movable between the cover plate and the first separator; a second light amount adjusting blade being movable between the first separator and the second separator; a base body to which the cover plate, the first separator, and the second separator are mounted, having a throughhole and mounting grooves, the throughhole being formed to have a diameter larger than a diameter of the hole of the second separator, the mounting grooves allowing the second separator to be mounted therein and being opened toward the throughhole.

Abstract: In order to simplify operation control and achieve smaller-sized apparatuses, the present invention provides an object lens drive apparatus having a fixed block, a movable block holding an objective lens, support springs connecting the fixed block and the movable block, a focusing coil, tracking coils, a tilt coil, first magnets constituting a first magnetic circuit, and a second magnet constituting a second magnetic circuit and arranged in a state being inserted in the tilt coil. The objective lens and the second magnet are positioned separately in a direction orthogonal to both a focusing and tracking directions. The second magnet is polarized to an N pole and an S pole parallely in the tracking direction. Portions of the tilt coil opposed to each other in the tracking direction with the second magnet put therebetween are formed to be tilt drive portions moving the movable block in a tilt direction.

Abstract: A liquid crystal display device includes a liquid crystal display cell including lamination of a lower polarizer, a first glass substrate having a metal oxide glass film formed on the side of the lower polarizer, a liquid crystal layer, a second glass substrate having a metal oxide glass film formed on the side opposite the liquid crystal layer, and an upper polarizer; and a backlight unit including a light guide plate, a diffusion plate, and light sources. The metal oxide glass films are a transparent film made of an organic/inorganic hybrid material. The films are formed by coating a solution of a metal alkoxide composition on individual outer surfaces of the first glass substrate and the second glass substrate, both of which have been roughened by a polishing process, and by hydrolyzing and curing the metal alkoxide composition.

Abstract: An optical pickup includes a lens holder holding an objective lens for converging a light beam on a signal recording layer of an optical disk; elastic support members supporting the lens holder such that the lens holder can freely move in three driving directions, i.e., a tracking direction, a focusing direction, and a tilting direction; a pair of coil units attached to two sides of the lens holder, the two sides being spaced in a tangential direction orthogonal to the focusing direction and tracking direction; and a pair of magnets arranged to face the corresponding coil units. Each coil unit includes a tracking coil, a focusing coil, and a tilting coil for driving the lens holder in the three driving directions. The focusing coil and the tilting coil are formed by winding a focusing conductor of the focusing coil and a tilting conductor of the tilting coil together in parallel.

Abstract: The present invention provides an objective-lens driving apparatus in which the phase delay is small in focusing-response characteristic and which excels in resonance characteristic in high-frequency bands. The objective-lens driving apparatus includes a movable unit that has a lens holder holding an objective lens, a fixed unit that is spaced apart from the movable unit in a tangential direction, elastic support members that support the movable unit, enabling the movable unit to move with respect to the fixed unit in the focusing direction and tracking direction and to incline in a tilt direction, a first magnet, and a second magnet that is magnetized in a direction opposite to a magnetization direction of the first magnet.

Abstract: An objective lens driving device is to be improved in sensitivity and reduced in size and thickness. To this end, an objective lens driving device includes a stationary block arranged on a stationary plate provided on a movable base, a movable block holding an objective lens and moved along the focusing direction, the tracking direction and the tilt direction, support springs for supporting the movable block with respect to the stationary block, a first magnetic circuit for causing movement of the movable block along the focusing direction and along the tracking direction, and a second magnetic circuit for causing movement of the movable block along the tilt direction. The second magnetic circuit includes a pair of tilt magnets, each having two poles so that N poles and S poles lie along the tangential direction, and a pair of tilt coils facing the tilt magnets and each having an axis of winding wire direction along the tangential direction.

Abstract: In order to simplify operation control and achieve smaller-sized apparatuses, the present invention provides an object lens drive apparatus having a fixed block, a movable block holding an objective lens, support springs connecting the fixed block and the movable block, a focusing coil, tracking coils, a tilt coil, first magnets constituting a first magnetic circuit, and a second magnet constituting a second magnetic circuit and arranged in a state being inserted in the tilt coil. The objective lens and the second magnet are positioned separately in a direction orthogonal to both a focusing and tracking directions. The second magnet is polarized to an N pole and an S pole parallely in the tracking direction. Portions of the tilt coil opposed to each other in the tracking direction with the second magnet put therebetween are formed to be tilt drive portions moving the movable block in a tilt direction.