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| Number | Title | Issue Date |
| 8171506 | Optical-system driving device effecting switchover between objective lenses for achieving focal spots An optical-system driving device is achieved that can switch over between objective lenses and is space-saving, lightweight, and simply-configured. An optical-system driving device for recording information onto or playing it back from an optical storage medium, inc... | 05/01/2012 |
| 8136131 | Optical pickup and production method thereof An optical pickup includes an actuator having an objective lens and an optical base on which the actuator is supported. The actuator includes a yoke having an opening, a first straight section and an opposing second straight section, the opening being interposed bet... | 03/13/2012 |
| 8117631 | Pickup with asymmetrically arranged lens for accessing moving storage media and drive having the pickup A pickup for accessing moving storage media carrying substantially parallel information tracks has a carrier, an actuator with a lens and suspension wires extending from the rear of the carrier and joining the carrier and the actuator. The actuator is movable in the... | 02/14/2012 |
| 8087038 | Optical pickup having thermal expansion compensation An aspect of the invention provides an optical pickup in which an optical axis is not displaced even if ambient temperature is changed. The optical pickup of the invention has an optical unit and an optical pickup case. The optical unit has a lens member having an o... | 12/27/2011 |
| 8042130 | Optical driving device including a holder with a top face having a closed structure The optical driving device according to the present invention includes a holder for holding a plurality of optical each of which focuses on an optical disk a light beam outputted from a light source, focusing coils, and tracking coils; a plurality of elastic support... | 10/18/2011 |
| 7979872 | Lens actuator, optical pickup device, and optical recording and reproducing apparatus A disclosed lens actuator includes: an objective lens condensing a light beam on an optical storage medium; a diffractive element providing compatibility with plural types of optical storage media relative to light sources of plural different wavelengths; and a lens... | 07/12/2011 |
| 7975275 | Object lens actuator and disc drive using the same The present invention has an object to provide an object lens actuator that reduces the amplitude of vibration of an object lens related to a torsional vibration of a lens holder and to enable a disc drive using the same to record information on a disc at high speed... | 07/05/2011 |
| 7814505 | Objective-lens driving device utilizing tracking coils and focus coils arranged in series A lens holder is configured by coupling an upper piece and a lower piece. First bobbin portions around which respective tracking coils are wound are provided in one of the upper and lower pieces, and second bobbin portions around which respective focusing coils are ... | 10/12/2010 |
| 7634783 | Scanning device for optical discs The invention relates to a scanning device for optical discs, having an adjustable scanning unit tensioned against a carrier with a spring. For minimizing the structural space for the spring and avoiding separate fixing elements, the spring is formed as a dip spring... | 12/15/2009 |
| 7627877 | Objective lens actuator and optical pickup unit employing the same An objective lens actuator includes a lens holder for receiving an objective lens, a first micro-actuator, and a second micro-actuator. The first micro-actuator is connected to the lens holder and is configured for driving the objective lens along a substantially ra... | 12/01/2009 |
| 7577968 | Optical pickup actuator, method of manufacturing the optical pickup actuator, and optical pickup employing the optical pickup actuator, and optical recording and/or reproducing apparatus employing the optical pickup An optical pickup actuator including a blade supported by a plurality of suspensions to be movable with respect to a base and a magnetic circuit to drive a movable part including the blade, a method of manufacturing the optical pickup actuator, an optical pickup emp... | 08/18/2009 |
| 7555760 | Optical head An optical head, in which a spring stopper rib, as formed in a slide base, includes a post portion protruding from the upper face of the slide base, and a spring stopper portion for stopping a spring, and in which the spring receiving portion of an actuator has a re... | 06/30/2009 |
| 7552455 | Objective lens with elastic support structure The invention can obtain an excellent linear property in a focusing direction and a tracking direction and can obtain a stable operation, in an objective lens driving means of an optical pickup. In an optical pickup reading and writing an information with respect to... | 06/23/2009 |
| 7464389 | Optical pickup actuator with a magnetic driver having focus, track and tilt coils An optical pickup actuator includes focus coils, track coils, and tilt coils disposed on opposite sides of a bobbin to drive the bobbin in a focus direction, a track direction, and a tilt direction and leaves the other opposite sides of the bobbin as empty sides on ... | 12/09/2008 |
| 7461390 | Optical pick up apparatus A stopper 30 includes a projected portion 35 for restricting movement of a movable section in a focusing direction and a wall section 34 for restricting movement of the movable section in a tracking direction, the projected portion 35 and... | 12/02/2008 |
| 7437746 | Lens driving apparatus A lens driving apparatus including a fixing member; a moving member which is movably provided with respect to the fixing member; an objective lens which is held by the movable member; a connecting member which elastically connects the fixing member to the movable me... | 10/14/2008 |
| 7359293 | Optical pickup device An optical pickup device is applied to DVD recorders and includes a beam expander unit. A drive coil wound around a lens holder within the beam expander unit, is located in a magnetic field formed by a magnet. When an electric current is passed through the drive coi... | 04/15/2008 |
| 7342870 | Position adjustment apparatus, optical pickup apparatus and position adjustment method A chuck portion provided to keep a fixed positional relation with respect to a housing, holds a light source unit detachably. This chuck portion is displaced from an advanced position to a retracted position to displace the light source unit which is in a provisiona... | 03/11/2008 |
| 7327644 | Optical pickup and disc drive apparatus 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 bl... | 02/05/2008 |
| 7319564 | Objective lens driving apparatus In an objective lens driving apparatus which includes a lens holder (22) provided with a plurality of coils (23, 24) and swingably supported by a suspension wire (28), and a magnet (27) for supplying a driving force to the lens holder by ... | 01/15/2008 |
| 7295388 | Lens module A lens module using electromagnetic force to drive the focus-adjusting lens is disclosed. The lens module includes a base, two steel plates, four springs, a bottom plate, a lens holder, a coil, a lens, a top plate, two magnets, a magnet housing and a top cover. The ... | 11/13/2007 |
| 7287264 | Objective lens drive apparatus with objective lens portion movable along support member axial direction An objective lens drive apparatus includes a stationary member, a movable portion having an objective lens, an objective-lens holding member, and driving coils, and a plurality of rod-like elastic support members each having an axial direction parallel to a third di... | 10/23/2007 |
| 7280442 | Slim-type optical pick-up actuator for recording/reproducing device An optical type pick-up actuator can include a lens holder having an object lens for condensing a light on an optical disc mounted at one side thereof and activated in a predetermined direction, and a plurality of yokes and magnets facing one another. A focusing coi... | 10/09/2007 |
| 7251819 | Optical pickup device employing magnet and tracking coil to drive objective lens in tracking direction An optical pickup device includes an objective lens holder having a pair of tracking coils and an objective lens fixed thereto, and a pair of magnets. The pair of tracking coils are rectangular or square in geometry. When the objective lens is not displaced in a tra... | 07/31/2007 |
| 7242644 | Optical disk drive, and a method of assembling it An optical disk drive includes an optical pick-up unit having a fixed part with at least a light source, and a movable part mounted on a guide. The movable part includes a mirror, a focusing lens, and lens-moving elements. The movable part is adapted to move a focus... | 07/10/2007 |
| 7225452 | Optical head A relay lens driving device provided in an optical head moves a relay lens in the direction of an optical axis thereof to correct a spherical aberration that may be caused by an error in the thickness of a cover layer of an optical disk. The relay lens driving mecha... | 05/29/2007 |
| 7210154 | Optical pickup actuator with a magnetic driver having focus, track and tilt coils An optical pickup actuator includes focus coils, track coils, and tilt coils disposed on opposite sides of a bobbin to drive the bobbin in a focus direction, a track direction, and a tilt direction and leaves the other opposite sides of the bobbin as empty sides on ... | 04/24/2007 |
| 7200849 | Optical head and optical disc drive An optical head is driven in a tracking direction with respect to a rotating optical disc. The optical head includes a light source, an optical block, a condenser shifter, and a rotating mechanism. The light source is used to read and write data from/on the optical ... | 04/03/2007 |
| 7188348 | Optical disc drive apparatus and method An optical pickup unit (OPU) includes a moveable structure that is moved by a voice coil motor component in response to an input signal. The moveable structure includes a pattern that is moved corresponding to the input signal. An encoder reads the pattern to genera... | 03/06/2007 |
| 7136331 | Disk drive An optical pick-up includes a lens holder and a lens holder supporting portion. The lens holder has a focusing coil, a tracking coil, and a pair of nickel plates arranged to sandwich the focusing coil from the top and the bottom. The lens holder supporting portion i... | 11/14/2006 |
| 7131128 | Optical actuator An optical pickup actuator for use with a recording medium includes a swing arm pivoting in a tracking direction with respect to the recording medium, a first driving unit pivoting the swing arm, an optical pickup facing the recording medium, an elastic member havin... | 10/31/2006 |
| 7107602 | Objective-lens driving apparatus and optical disk apparatus An objective-lens driving apparatus includes permanent magnets on both ends of the movable unit, simultaneously, on the other side of the movable unit parallel to the tracking direction, also a permanent magnet at a position closer to the center of the movable unit.... | 09/12/2006 |
| 7092321 | Lens actuator incorporated in optical information storage system for promptly canceling fluctuation of radial tilt angle of rotating disc A lens actuator keeps an objective lens focused on a track in an information recording layer of an optical disc against fluctuation unavoidable for the optical disc, and has a lens holder, three electromagnetic actuators for moving and tilting the lens holder and th... | 08/15/2006 |
| 7082084 | Optical pickup apparatus It is an object of the present invention to provide an optical pickup apparatus appropriate for the notebook PC that can prevent structural resonance of the lens holder by arranging the focus coil and the tracking coil in a way to stabilize the weight balance, enabl... | 07/25/2006 |
| 7065008 | Objective lens unit An objective lens has an actuator base and a lens holder for supporting an objective lens. The lens holder has a shaft hole. A shaft is disposed on the actuator base and fitted to the shaft hole. A cover is attached to the actuator base so as to cover the lens holde... | 06/20/2006 |
| 7039926 | Optical disk apparatus with fine tracking mechanism An optical disk apparatus includes an objective lens system for producing a beam spot on an optical disk, a slider movable relative to the optical disk, and a fine tracking mechanism for shifting the beam spot in a radial direction of the optical disk. The objective... | 05/02/2006 |
| 6996037 | Pickup head actuator A pickup head actuator for carrying a plurality of near-field optical I/O elements, far-field optical I/O elements, or magnetic I/O elements. Besides performing focusing and tracking servo, the attraction due to magnetic inductor and tracking magnet enables a base t... | 02/07/2006 |
| 6977874 | Apparatus and method for driving circuit elements based on groups of instruction values A circuit element driver includes a control section and a driving section. The control section receives a number n of instruction values of a first group (where n≧2) and produces and outputs a number p of instruction values of a second group (where (n+1)≦p | 12/20/2005 |
| 6922840 | Recording medium driving apparatus including at least a turntable, a spindle motor, and a linear driving device A recording medium driving apparatus can adjust the position of a linear driving means with respect to a turntable with high precision, so that a direction in which the head apparatus is moved by the linear driving means matches a predetermined radial direction with... | 07/26/2005 |
| 6845510 | Objective lens driving device with cover having an opening for exposing a tracking coil The height of a tracking coil in an objective lens driving device having a cover over a magnetic circuit is freed from limitations imposed by the cover, so that an effective length of the tracking coil can be ensured. Magnets 2, 3 generating an effective flux... | 01/18/2005 |
