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| Number | Title | Issue Date |
| 8169864 | Actuator for pickup, pickup device, recording medium drive device, and method of manufacturing actuator for pickup Provided is an actuator for a pickup, in which end parts of a plurality of suspensions (550A to 550F) of five or more are positioned on a virtual circle (X) formed on a plane by being projected onto the plane including both a focusing direction and a t... | 05/01/2012 |
| 8111593 | Objective lens drive and optical pickup apparatus An objective lens drive and an optical pickup apparatus are provided which can be reduced in size. Two tilt coils and two tracking coils are disposed so that among planes defined by the respective coils, a plane perpendicular to a winding direction thereof is parall... | 02/07/2012 |
| 8023367 | Objective lens actuator and disc drive employing the objective lens actuator An object lens actuator can improve workability and operate with high reliability by prevention of damage to the object lens actuator and a disc and sticking of a moving part caused by an excessive movement of the moving part. In a disc drive employing the object le... | 09/20/2011 |
| 8018799 | Optical pickup device and optical disc device An optical pickup device is provided. The optical pickup device includes a first, second, and third light emitting portions emitting light beams having first, second, and third wavelengths, respectively; an adjusting element for optical axes enabled to control the o... | 09/13/2011 |
| 8014238 | Optical pickup device An optical pickup device to provide a stable operation in both low-speed and high-speed modes by controlling a change in natural frequency, the optical pickup device including: a lens holder to support an objective lens; a supporting unit spaced apart from the lens ... | 09/06/2011 |
| 8004937 | Optical pickup and optical disk apparatus There is provided a optical pickup in which a movable part is support by a fixed part through an elastic supporting member, one end of the elastic supporting member being fixed to a support base and the other end of the elastic supporting member being fixed to an te... | 08/23/2011 |
| 8000183 | Object lens actuator, optical pickup and optical disk drive The present invention provides an object lens actuator, an optical pickup, and an optical disk drive, which can increase the size of the object lens actuator driving a lens holder in the tangential tilt direction, and drive and control the lens holder with a small a... | 08/16/2011 |
| 7990813 | Optical pickup device An optical pickup device includes a hosing having three walls connected together whose horizontal cross-section is substantially U-shaped. A first wall supports one end of a shaft, a second wall facing the first wall supports the other end of the shaft and a third w... | 08/02/2011 |
| 7986594 | Optical pickup An optical pickup has a lens actuator, at least one suspension wire having a first end and an opposite second end, the lens actuator being held by the wire at the first end, and a support base to which the wire is fixed at the second end. The support base has at lea... | 07/26/2011 |
| 7969829 | Objective lens driving apparatus, optical pickup, and information recording/reproducing apparatus An objective lens driving device is provided with an objective lens; a lens holder for holding the objective lens; a pair of linear suspension springs for supporting the lens holder at each one end; a spring holder whereupon the other ends the springs are fixed; and... | 06/28/2011 |
| 7940610 | Optical head with adhesive relief portions An optical head includes an objective lens held by a lens holder that is driven by a coil. The optical head includes: a base, including a mounting face having an opening portion; a substrate, operable to supply an electric power to the coil, and including a first po... | 05/10/2011 |
| 7933174 | Optical pickup with support part having hole for being inserted with a projection part of a case An objective lens actuator in an optical pickup, having a semiconductor laser diode, electro-optic parts, such as a lens or the like, as well as, the objective lens actuator, etc., in a case, comprises: a holder, which mounts an objective lens and a coil thereon, as... | 04/26/2011 |
| 7924665 | Pickup device and recording medium drive unit The pickup device includes: a fixed portion 11, a movable portion 12 movable in a tracking direction and a focus direction; linear resilient members 13A through 13D for connecting the fixed portion 11 and the movable portion 12 | 04/12/2011 |
| 7911888 | Actuator for pickup, pickup device, recording medium drive device, and method of manufacturing actuator for pickup Provided is an actuator for a pickup, in which end parts of a plurality of suspensions (550A to 550F) of five or more are positioned on a virtual circle (X) formed on a plane by being projected onto the plane including both a focusing direction and a t... | 03/22/2011 |
| 7907479 | Optical pickup actuator in writing and reading device An optical writing and reading device includes: a base; a main shaft holder fixed to the base; a main shaft supported by the main shaft holder; a pickup base supported by and moving along the main shaft; an optical pick-up actuator formed at the pickup base; an opti... | 03/15/2011 |
| 7903506 | Optical pickup device The present invention provides an optical pickup device capable of properly suppressing coma aberration which occurs due to a relative tilt error between objective lenses. The optical pickup device includes: first and second objective lenses having different optical... | 03/08/2011 |
| 7855939 | Optical disc apparatus employing an objective lens having a high numerical aperture An optical disk apparatus that includes a movable part having an objective lens for focusing a laser beam onto an optical disk. A lens-holding member holds the objective lens. A protecting member prevents contact of the objective lens with the optical disk. An elast... | 12/21/2010 |
| 7804745 | Optical pickup and optical disk device An optical disk device for driving an optical disk having a rotation center and a recording track around the rotation center. The device includes a light source which emits a light beam, an objective lens which irradiates a position on the recording track of the opt... | 09/28/2010 |
| 7791985 | Objective lens driving apparatus An objective lens driving apparatus comprising: an actuator movable unit that is configured such that a driving coil is mounted on a lens holder with an objective lens, and is supported on an actuator frame displaceably and elastically; a magnetic circuit that inclu... | 09/07/2010 |
| 7768879 | Optical pickup and optical disk apparatus 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... | 08/03/2010 |
| 7729213 | Optical disk apparatus employing an objective lens having a high numerical aperture An optical disk apparatus includes a movable part having an objective lens for focusing a laser beam onto an optical disk. A lens-holding member holds the objective lens. A protecting member prevents contact of the objective lens with the optical disk. The protectin... | 06/01/2010 |
| 7724616 | Optical recording/reproducing apparatus, medium, and method and controlling apparatus, medium, and method therefor An optical recording/reproducing apparatus, medium, and method and a controlling apparatus, medium, and method thereof. The recording/reproducing apparatus includes an optical pickup actuator including a holder formed on a base, a blade connected to the holder with ... | 05/25/2010 |
| 7697381 | Object lens drive unit An object lens drive unit in which an undesired displacement or inclination of an object lens with respect to an optical disc is reduced. The position at which a lens holder for the object lens is supported by a pair of rod-shaped elastic support members in the focu... | 04/13/2010 |
| 7668049 | Optical pickup actuator and optical recording/reproducing apparatus An optical pickup actuator is provided. The actuator comprises a bobbin, on which one or more objective lenses are mounted for allowing light to be incident onto an optical information storage medium, and which is supported by a support member to be movable in relat... | 02/23/2010 |
| 7663984 | Optical pickup actuator for driving an objective lens An optical pickup actuator which includes a base, a blade having an objective lens mounted thereon, a plurality of suspensions supporting the blade to be movable with respect to the base and forming an electroconductive path, and a magnetic circuit driving the blade... | 02/16/2010 |
| 7656757 | Optical pickup for an optical recording and/or reproducing apparatus including an actuator forming a predetermined angel with respect to the pickup base An optical pickup of an optical recording and reproducing apparatus includes a plurality of object lenses used to record and or reproduce information from/to various types of optical recording media of different recording densities; an actuator driving the object le... | 02/02/2010 |
| 7643386 | Optical pickup actuator and optical recording and/or reproducing apparatus An optical pickup actuator comprises a lens holder having an object lens which focuses a laser beam onto an optical information storage medium mounted thereon. In the optical pickup actuator the lens holder is movably supported by a support member with respect to a ... | 01/05/2010 |
| 7606119 | Objective lens actuator In one preferred embodiment, an objective lens actuator includes a base, a suspension apparatus mounted on the base, a holder suspended by the suspension apparatus for holding an objective lens, a voice coil motor (VCM) for driving the holder to vibrate, and a cover... | 10/20/2009 |
| 7602678 | Lens holder and lens protector for use in optical pick-up and method of manufacturing same The present invention provides a lens holder and a lens protector having little burrs and no gate marks formed an a surface thereof confronting an optical disc and a method of manufacturing the lens holder and the lens protector. The lens holder is formed in integra... | 10/13/2009 |
| 7580326 | Optical pickup actuator preventing short circuit by minimizing unwanted contact between components An optical pickup actuator having a printed circuit board and wire fixers for fixing one end of each of a the suspension. The optical pickup actuator includes coil connectors for connection with coils connectable to an external power source. The optical pickup actua... | 08/25/2009 |
| 7573787 | Actuator, optical device, and optical recording/reproducing apparatus There is provided an actuator, an optical device, and an optical recording/reproducing apparatus. In the optical device, a first lens is fixed in an optical axis and a second lens, a movable member is supported by a shaft and slidable in an optical axis direction, a... | 08/11/2009 |
| 7567486 | Slim type optical pick-up actuator A slim type optical pick-up actuator is provided. The actuator including: a lens holder provided with an object lens mounted at a predetermined portion thereof, two or more focusing coils received in a receiving groove thereof, a tracking coil disposed on a front su... | 07/28/2009 |
| 7561498 | Optical pickup actuator having aberration correcting mechanism and method of assembling the same An optical pickup actuator and a method of assembling the same is provided. The method of assembling the optical pickup actuator comprises the steps of providing a blade having at least one objective lens mounting area and an aberration correcting mechanism mounting... | 07/14/2009 |
| 7558164 | Optical pick-up actuator An optical pickup actuator includes a lens holder for holding an object lens and having a receiving area, coils in the receiving area of the lens holder, at least one magnet opposing the coils, a yoke plate having a first yoke for supporting the magnet, and a yoke s... | 07/07/2009 |
| 7542384 | Objective lens actuator An objective lens actuator is provided. An objective lens holder is movably located on a ferromagnetic yoke with corresponding to inner yokes thereof to hold an objective lens. Tracking coils and focusing coils are respectively located on different two opposite side... | 06/02/2009 |
| 7466635 | Recording and/or reproducing apparatus with optical pickup actuator, and methods for same A recording/reproducing apparatus and an optical pickup actuator, and corresponding methods, for driving a bobbin in a focusing direction, a tracking direction or a tilting direction by use of a magnetic driving unit movably supported by a support member, where an o... | 12/16/2008 |
| 7443771 | Objective lens driving apparatus having bottom plate forming a projecting part It is an object of this invention to increase the rigidity of a movable part and decrease its weight. An objective lens driving apparatus has an objective lens which focuses light on the recording surface of an optical disk. The objective lens is driven by focusing ... | 10/28/2008 |
| 7440202 | Lens drive apparatus Shafts are fixed to a base and extend in a direction parallel to a center axis of a through hole of the base. Two yoke arrangements are installed to the shafts. A lens holder frame holds a lens, which has an optical axis parallel to the central axis of the through h... | 10/21/2008 |
| 7441258 | Objective lens drive device and optical head device An objective lens drive device includes a drive mechanism for driving a lens holder at least in a focusing direction and a tracking direction. The drive mechanism includes a drive magnet provided with a magnetized opposing face in which different magnetic poles are ... | 10/21/2008 |
| 7420891 | Optical pickup device having heat radiation means and optical disk apparatus using the same An optical pickup device comprises a semiconductor laser that causes outgoing of laser beam used for reproduction and recording of information on an optical disk, and an objective lens that conducts the laser beam outgoing from the semiconductor laser to the optical... | 09/02/2008 |
