Class / Patent application number | Description | Number of patent applications / Date published |
720672000 | Transducer carriage or actuator | 56 |
20080271063 | Disc player - The present invention proposes a disc player without risk of damaging a disc and which has the ability to achieve the miniaturization and simplification of the construction. | 10-30-2008 |
20080271064 | PORTABLE INTEGRATED DISC-PUBLISHING DEVICE - A portable integrated media apparatus comprising: a disc transport movable along at least one axis, and includes a disc engagement mechanism for selective engagement of at least one disc; a print assembly for printing to the at least one disc, the print assembly including: one or more print heads movable about a print axis; at least one recording device for recording to the at least one disc; at least one disc receptacle adapted to store the at least one disc; a control unit for controlling the functions of the disc-publishing device; a data interface for transmitting data; and a data storage component for storing the data; wherein the disc transport and the one or more prints heads are adapted to move independent of each other and wherein the control unit controls one or more functions of the disc-publishing device based on the data received from the data interface, stored in the data storage component, or both. | 10-30-2008 |
20080282278 | TRANSPORT METHOD AND APPARATUS FOR CARTRIDGE LIBRARY - A cartridge transport robot transports a cartridge of information storage media between differing locations in a cartridge library. The cartridge robot comprises a robot carriage; a robot tray; and a carriage motive system. The robot tray comprises a guide configured to facilitate linear motion of the robot carriage, the robot carriage being situated on a first side of the robot tray. The robot carriage comprises cartridge engagement elements configured to selectively engage and release the cartridge. The carriage motive system is configured to provide linear motion to the robot carriage along the robot tray from a carriage retracted position to a carriage extracted position and thereby linearly displace the cartridge engaged by the cartridge engagement elements. | 11-13-2008 |
20080320506 | Disk Device - A disk device is capable of quickly identifying an inserted optical disk. A reading portion obtains disk surface information from an optical disk that is passing, and stores the obtained disk surface information in a storing portion provided in a disk playing device. An identifying portion decides whether or not the disk playing device is able to play the optical disk, based on the surface information. | 12-25-2008 |
20090070795 | Suspension arm actuator for a scanning device - The invention relates to a suspension arm actuator for a scanning device, comprising a suspension arm which is designed as a two-arm lever, is allocated to a disk-shaped data carrier and is mounted to a support such that it can be pivoted about a pivot axis extending perpendicularly in relation to the suspension arm. At one end of a lever arm, the suspension arm supports a sensor and, on the other lever arm, comprises a component (focus coil | 03-12-2009 |
20090249379 | OPTICAL PICKUP FEED DEVICE - The present invention is to provide a pickup feed device to accurately position an optical pickup in place with miniaturization. The pickup device includes a lead screw attached to a movable chassis, a pickup portion, a rack member, a torsion coil spring, a projection portion, and a recess portion. The pickup portion has a case receiving the pickup. The rack member is fixed to the case. The rack portion disposed on a rack one end portion and a case one end portion are engaged with the lead screw. A rack another end portion has the abut portion abutting an inner edge portion of the movable chassis. The torsion coil spring urges the abut portion toward a case another end portion. The projection portion is disposed on the abut portion and the recess portion is disposed on the case another end portion. | 10-01-2009 |
20090249380 | Suspension Arm Actuator for a Scanning Device - The invention relates to a suspension arm actuator for an optical scanning device, comprising a suspension arm designed as a two-arm lever and mounted between the lever arms such that it can be pivoted about an axis extending perpendicularly thereto. On its end side, one of the lever arms supports a scanning head and comprises an articulated region, preferably an elastically bendable region, for a motion of the scanning head in focusing direction and perpendicular in relation to the pivot plane of the suspension arm. The other lever arm is provided with a component of a magnetic drive for a swivel motion about the axis. In addition, the suspension arm actuator comprises a magnetic drive for moving the optical head in focusing direction. As a result, the suspension arm is designed such that the latter's lever arm that supports the scanning head is designed simply and without any further functional elements and is, therefore, reduced in weight. To achieve this, the magnetic drive for moving the optical head in focusing direction is allocated to the lever arm (II) which comprises a component of the magnetic drive for the swivel motion about the axis. The coils for the magnetic drives are, in particular, designed as printed coils. | 10-01-2009 |
20100162281 | OPTICAL PICKUP DEVICE AND METHOD FOR MANUFACTURING THE SAME - To provide an optical pickup device adapted such that for adhesion fixing of a holder for holding an LD or a light-receiving element to an optical pickup casing via an ultraviolet-curable adhesive, curing shrinkage during ultraviolet irradiation can be reduced and adhesion fixing achieved with high positioning accuracy. In a structure for adhesion fixing of a holder for holding an LD or a light-receiving element to an optical pickup casing via an ultraviolet-curable adhesive, since protrusions are provided at peripheral sections (UV irradiation light source side) on a bonding surface of the holder, a section exposed to strong UV light is first cured, then after the adhesive has moved from an uncured section, the amount of shrinkage of the first cured section in a Z-direction is reduced, and the uncured section is cured. | 06-24-2010 |
20100199293 | Inclinable pick-and-place head of disc pick-and-place device - An inclinable pick-and-place head of a disc pick-and-place device comprises a first frame and a second frame movably coupled thereto; said first frame is coupled to a disc pick-and-place head; a first actuating mechanism may drive a bottom of the first frame to be near to or leave the second frame to cause a pick-and-place face of the pick-and-place head coupled to a disc is inclined to shorten a level width of the disc relative to an accepting groove of a disc tray. Thereby, an action similar to picking up and placing in a disc directly by a human's hand can be executed so that the disc is not blocked by tabs around the accepting groove or a panel of a copier to place in the accepting groove or take out from the accepting groove. | 08-05-2010 |
20100205623 | Techniques For Emulating Sequential Device With Constrained Disk Drive - A disk drive apparatus includes at least one disk, a head-arm assembly, and a controller circuit. The head arm assembly includes at least one read/write head. The head-arm assembly is movable to enable the read/write head to access a writable surface of the disk. The controller circuit also causes the read/write head to record data on the writable surface of the disk in a write append format. | 08-12-2010 |
20100229189 | Optical device - An optical device includes a sub-mount | 09-09-2010 |
20110185375 | OBJECTIVE LENS DRIVING APPARATUS, OPTICAL PICKUP - High-performance and reliable objective lens driving apparatus and optical pickup wherein the tilt of an objective lens relative to an optical disc is suppressed are provided. The optical pickup is equipped with a semiconductor laser, an electro-optic component, and the objective lens driving apparatus. In this optical pickup, the objective lens driving apparatus is comprised of: a moving part including an objective lens, a holder that holds the objective lens, a focusing coil, and a tracking coil; a holding member for elastic support members that couples together multiple elastic support members providing elastic support on a fixed part and the moving part and is mounted on the moving part; the elastic support members that elastically support the moving part from the fixed part; and the fixed part. The holding member for elastic support members mounted on the moving part and the holder that holds the objective lens are joined together by fitting together a concavity and a convexity. | 07-28-2011 |
20110314483 | METHOD OF CONTROLLING MECHANICAL MECHANISMS OF OPTICAL STORAGE APPARATUS FOR PEAK POWER/CURRENT REDUCTION, AND RELATED OPTICAL STORAGE APPARATUS AND MACHINE-READABLE MEDIUM - An exemplary method of controlling an optical storage apparatus includes: driving a first mechanical mechanism of the optical storage apparatus by applying a first control signal to the first mechanical mechanism, wherein a second mechanical mechanism of the optical storage apparatus is inactive while the first mechanical mechanism is operating in response to the first control signal; adjusting the first control signal applied to the first mechanical mechanism when the second mechanical mechanism is requested to be active; and driving the second mechanical mechanism by applying a second control signal to the second mechanical mechanism while the first mechanical mechanism is operating in response to the adjusted first control signal. | 12-22-2011 |
20120072930 | DEVICE FOR REDUCING POWER CONSUMPTION OF OPTICAL DRIVE AND METHOD FOR THE SAME - A device and method for reducing power consumption of an optical drive are proposed. The present invention samples a carrier control signal and then compares the samples of the signals with predetermined threshold signals. According to the comparison result, the present invention produces at least one diphase excitation control signal. The diphase excitation control signal comprises at least one impulse signal, and a negative edge of the impulse signal is adjusted to a predetermined level during the period of the diphase excitation control signal. The present invention reduces the time for outputting the control signals and greatly reduces the power consumption of the optical drive thereby. | 03-22-2012 |
20120072931 | SURFACE EMITTING SEMICONDUCTOR LASER, OPTICAL RECORDING HEAD, AND OPTICAL RECORDING APPARATUS - Disclosed is an optical recording head which is provided with a surface emitting laser that emits laser light which is efficiently introduced into a waveguide through a grating coupler (diffraction grating). Specifically disclosed is an optical recording head which is provided with a surface emitting laser comprising at least a light source, and a waveguide that is connected thereto through a diffraction grating and irradiates a recording medium with the light from the light source. The light source has a two-dimensional photonic crystal structure in the surface that faces the waveguide. Regions of the two-dimensional photonic crystal structure other than the region facing the diffraction grating are converted, and the region facing the diffraction grating serves as a surface emitting. | 03-22-2012 |
20120198484 | Optical Element Adjustment Structure and Optical Pickup - The optical element adjustment structure is provided with a rotating side including an optical element to be rotationally adjusted, and a non-rotating side where the rotationally adjusted optical element is securely arranged. The rotating side includes a tapered distal end section, and a contact section provided in an end section on a side opposite the distal end section and adapted to be contacted by an adjustment jig. The non-rotating side includes a recessed section for engaging the distal end section. The adjustment jig contacting the contact section is moved, whereby the rotating side rotates, the distal end section engaged in the recessed section being used as a fulcrum, and the optical element is rotationally adjusted. | 08-02-2012 |
20120204198 | DRIVE DEVICE FOR OPTICAL DISC APPARATUS - A drive device for an optical disc apparatus, comprising: a traverse chassis; a vertically moving lever arm for covering part of the lower surface of the traverse chassis and supporting the traverse chassis; a first circuit board disposed on the upper surface of the traverse chassis; a second circuit board disposed on the lower surface of the traverse chassis; and a flexible cable that passes between the traverse chassis and the lever arm, is connected by one end thereof to the first circuit board, and is connected by the other end thereof to the second circuit board; wherein an opening that has a greater width than the width of the flexible cable is provided to a section of the lever arm in contact with the flexible cable. | 08-09-2012 |
20120216221 | METHOD FOR CALIBRATING STEPS OF STEPPING MOTOR USED IN OPTICAL DISC DRIVE - A method for calibrating steps of a stepping motor used in an optical disc drive is provided. A pick-up head is moved to an origin of the structure. The pick-up head is moved toward a terminal of the structure by a stepping motor. The steps of the stepping motor are recorded until a counter electromotive force of the stepping motor is detected. A predetermined travel distance of the pick-up head is calculated. If the predetermined travel distance of the pick-up head is different from the maximum distance of the structure, then it is decided that the stepping motor has step error, and the steps of the stepping motor are calibrated. | 08-23-2012 |
20140053170 | SPINDLE MOTOR AND DISK DRIVING DEVICE - There is provided a spindle motor for a 2.5″ type disk driving device, including: a base having a stator core seating part protruding upwardly in an axial direction; a stator core including a ring-shaped coreback part, a tooth part, and a front end part; and a coil wound around the stator core, wherein when a length of the stator core from an inner end portion of the coreback part to the endmost part of the front end part is defined as L and a height of the wound coil from the lowermost edge of the coil in an axial direction to the uppermost edge thereof is defined as H, a ratio (H/L) of the height of the wound coil to the length of the stator core in which back electromotive force (B-EMF) is 0.35 V/Krpm or more when the supply of power is stopped satisfies 0.524≦H/L≦0.703. | 02-20-2014 |
20140130067 | Rotary Head Data Storage and Retrieval System and Method with Tape Medium Having Transverse Primary Data Tracks and Longitudinal Secondary Data Track - A data storage and retrieval system includes a head carriage unit having multiple heads disposed at a working surface and a tape drive unit configured to move the tape past the working surface of the head carriage unit in a direction substantially parallel to a tape length. The heads are configured to write primary data tracks to or read primary data tracks from the tape as the head carriage unit rotates and the tape moves past the working surface, the primary data tracks having an arcuate shape and extending substantially along a tape width. The heads are also configured to write at least one secondary data track to or read at least one secondary data track from the tape as the head carriage unit rotates and the tape moves past the working surface, the at least one secondary data track extending substantially along the tape length. | 05-08-2014 |
20150067707 | SYSTEMS AND METHODS FOR ATOMIC FILM DATA STORAGE - The present disclosure provides systems and methods associated with data storage using atomic films, such as graphene, boron nitride, or silicene. A platter assembly may include at least one platter that has one or more substantially planar surfaces. One or more layers of a monolayer atomic film, such as graphene, may be positioned on a planar surface. Data may be stored on the atomic film using one or more vacancies, dopants, defects, and/or functionalized groups (presence or lack thereof) to represent one of a plurality of states in a multi-state data representation model, such as a binary, a ternary, or another base N data storage model. A read module may detect the vacancies, dopants, and/or functionalized groups (or a topographical feature resulting therefrom) to read the data stored on the atomic film. | 03-05-2015 |
720673000 | Locking of transducer carriage | 1 |
20140101678 | OPTICAL PICKUP - An optical pickup, including a housing, and an optical element mounted on the housing, wherein the optical element is fixed onto wall surfaces of the housing via adhesive agents on both sides of a certain single surface of the optical element, the optical pickup, further including a protrusion portion on the other side of a surface with the optical element positioned therebetween, the surface being orthogonal to the wall surfaces of the housing, the protrusion portion protruding from the housing, the front end of the protrusion portion protruding than the adhesive agents in a direction away from the wall surfaces. | 04-10-2014 |
720674000 | Adjusting transducer carriage | 11 |
20090025021 | OPTICAL DISC RECORDING AND REPRODUCING APPARATUS, OPTICAL DISC RECORDING AND REPRODUCING METHOD, AND OPTICAL DISC MANUFACTURING METHOD - The BCA recording and reproducing apparatus performs recording of data onto an optical disc placed on a recording turntable, reproduction of data recorded on an optical disc placed on a reproducing turntable and ejection of an optical disc placed on an exchanging table and placement of a new optical disc on the exchanging table in parallel. A processing time is thereby shortened compared with the case of performing data recording, reproduction and exchange in series. | 01-22-2009 |
20090055850 | Optical Disk Drive - An optical disc drive includes a locking part, a transmission-compensation mechanism, and a horizontal adjustment mechanism. The locking part is used to secure the first chucking portion and the second chucking portion of the disc chucker to the chucker seat. Therefore, the disc chucker keeps the optical disc stably. Besides, the transmission-compensation mechanism makes power of the driving motor be precisely transmitted to the optical pickup head. This effectively eliminates error or distortion during reading the optical disc. Furthermore, the horizontal adjustment mechanism is adopted to easily and efficiently regulate the angle between the optical disc and the optical pickup head. | 02-26-2009 |
20090113464 | Fly Height And Slider Protrusion Measurement - An apparatus for measuring a distance such as, for example, a fly height distance. An apparatus includes a slider having an air bearing surface and an optical condenser assembly spaced apart from the air bearing surface of the slider. The optical condenser assembly includes an optical cap and an optical substrate having a first surface and a second surface. The first surface is spaced apart from the optical cap and the second surface is spaced apart from the air bearing surface of the slider. | 04-30-2009 |
20120297403 | OPTICAL PICKUP - An optical pickup whose thickness is small and power consumption is low is provided, in which these advantages are achieved by increasing the driving force generated in the tilt coil in an objective lens driving apparatus and by making the thickness of the objective lens driving apparatus to be small. | 11-22-2012 |
720675000 | By guide rail or rod | 7 |
20080209458 | Optical Drive Comprising Spindle Adjustment Means - The invention relates to set-up adjustment of the optical pickup unit (OPU) ( | 08-28-2008 |
20080209459 | Optical Disc Device Having a Blocking Means for its Optical Pickup Unit - An optical disc recording and/or reproducing device comprising a drive for rotating an optical disc around an axis of rotation, a movable optical pickup unit ( | 08-28-2008 |
20080320507 | Optical Disk Apparatus - An optical disc apparatus capable of reducing looseness vibrations resulting from a gap between a sub-guide shaft and a bearing is provided. According to an optical disc apparatus in the present invention, both ends of the sub-guide shaft are supported by being sandwiched between a pair of support parts formed in a chassis and a pair of pressing members mounted on the chassis. The support part is formed by bending a protruding portion both protruding in an inward direction of a hole from an edge of the hole of the chassis and extending along the direction perpendicular to the sub-guide shaft. | 12-25-2008 |
20110258648 | OPTICAL PICKUP SUPPORTING DEVICE AND OPTICAL DISC APPARATUS INCLUDING THE SAME - Provided is a high-accuracy optical pickup supporting device by fixing guide shafts to a chassis by use of adjustment screws accurately. To this end, in the optical pickup supporting device, an end portion of a second guide shaft for supporting an optical pickup device is fixed to the chassis by use of: a coil spring included in an accommodation area of the chassis; and an adjustment screw. In addition, the adjustment screw is screwed to a fixation plate accommodated in an accommodation part of the chassis. Accordingly, a repulsive force produced by the coil spring does not concentrate on any part of the chassis. For this reason, the chassis is prevented from deforming and breaking due to this repulsive force. | 10-20-2011 |
20120047522 | TRAVERSE MODULE AND OPTICAL DISC DRIVE UTILIZING THE SAME - A traverse module of an optical disc drive includes a base and a cover connected to the base that includes at least one spring tab integrally formed therewith. A pair of guide bars is connected to the base. A pickup head module is slidably connected to the guide bars. At least one adjusting member is movably connected to the base. The at least one adjusting member supports at least one of the guide bars and the at least one spring tab presses against the at least one of the guide bars, the at least one adjusting member is able to urge the at least one of the guide bars to move. | 02-23-2012 |
20130031572 | TILT ADJUSTING DEVICE FOR OPTICAL PICKUP HEAD - A tilt adjusting device for an optical pickup head (OPU) is fixed on a chassis of an optical drive. The device includes a first screw and a secondary guide rail. The secondary guide rail includes a guide rail part, a base part, an extension part, and an elastic element. The guide rail part is embedded into a rail notch of the OPU and the extension part has a first end and a second end connected with the base part and the guide rail part. A first compressible space is defined between the base part, the elastic element and the chassis. The first screw is penetrated through the base part and the first compressible space and screwed in the chassis. By changing a screwed depth of the first screw in a screw hole, an altitude of the guide rail part is correspondingly adjusted. | 01-31-2013 |
20130061255 | OPTICAL DISC DRIVE INCLUDING GUIDE SHAFT SUPPORTING STRUCTURE - Provided is a shaft supporting structure, an optical pickup moving structure including the shaft supporting structure, and an optical disc drive. The shaft supporting structure includes a base chassis, a shaft installed on the base chassis, an axis support that supports an end of the shaft, and a rotatable locker for preventing the shaft from being separated from the axis support. | 03-07-2013 |
720676000 | Supported by linear guide rail or rod | 1 |
720679000 | Rail dampening or resonance suppression | 1 |
20080288971 | Antivibration guide rail for a computer disk drive - An antivibration guide rail for a computer disk drive, in which soft elastic antivibration pads are additionally located at appropriate positions on a hard plastic guide rail, and the guide rail is fitted to two sides of a disk drive. Accordingly, the antivibration pads are able to absorb vibration produced when the disk drive is running, thereby improving read accuracy of the disk drive, and reducing noise produced by vibration when the disk drive is running. | 11-20-2008 |
720681000 | Adjustable objective lens support | 21 |
20090300667 | Actuator for accessing moving storage media, board used for and method for manufacturing the actuator - An actuator for accessing moving storage media carrying substantially parallel information tracks has a suspension wire holder, a lens holder with a lens, and suspension wires connecting the suspension wire holder and the lens holder. According to the invention the suspension wire holder and the lens holder are constituted by a suspension wire holder part and a lens holder part of a single actuator blank made from insulating material, and are arranged coplanarly relative to each other the same way as they were while still connected to the actuator blank. | 12-03-2009 |
20100169903 | DRIVE SYSTEM FOR DRIVING A MOVABLE PART AND DISK DRIVE UNIT COMPRISING SUCH DRIVE SYSTEM - The invention provides a drive system for driving a lens holder ( | 07-01-2010 |
20110191794 | OPTICAL PICKUP APPARATUS - An optical-pickup apparatus includes first and second objective lenses that focus first and second laser light on information-recording layers of first and second optical discs, the second optical disc having an information-recording format different from that of the first optical disc; and a lens holder that integrally holds the first and second objective lenses in an adjacent manner, a disc surface of the first optical disc and of the second optical disc being substantially parallel to confronting faces of the first and second objective lenses, that confront the disc surface, a minimum distance between the disc surface and the confronting faces in a direction of an optical axis of the turntable being greater than a thickness of the turntable in a direction of a rotation axis of the turntable, either one or both of the first and second objective lenses configured to focus bluish-violet laser light on an optical disc. | 08-04-2011 |
20110202939 | OPTICAL DISC DEVICE AND RECORDING AND REPRODUCING METHOD - There is provided an optical disc device for reproducing or recording an optical disc. The optical disc device includes an object lens configured to irradiate the optical disc with light emitted from a light source; an actuator for controlling tilt of the object lens in a radial direction of the optical disc at a tilt value; a temperature sensor for detecting a temperature inside the optical disc device; and a controller for correcting the tilt value in accordance with a change in the temperature from the temperature detected at an initial adjustment of the optical disc device which is performed in loading of the optical disc. | 08-18-2011 |
20110209164 | Optical Pickup Apparatus and Manufacturing Method of Optical Pickup Apparatus - An optical-pickup apparatus includes: a first-objective lens; a second-objective lens; a lens holder including a first-lens barrel having the first-objective lens mounted on an end face thereof and a second-lens barrel having the second-objective lens mounted on an end face thereof; an actuator unit having the lens holder mounted thereon; and a housing having the actuator unit mounted thereon, the first and second objective lenses each being mounted on the lens holder such that a direction, in which wavefront of coma aberration on each lens face is most advanced in phase, is aligned with a radial direction of an information-recording medium, the actuator unit being mounted on the housing such that an optical axis of the first-objective lens is inclined in the radial direction at an inclination angle of the axis toward a recording surface of the medium required to cancel coma aberration of the first-objective lens to the surface. | 08-25-2011 |
20110214137 | LENS HOLDER AND OPTICAL PICKUP APPARATUS USING THE SAME - Provided is a lens holder comprising: a mounting hole into which a condenser lens part of the objective lens is to be inserted; a peripheral part which surrounds the mounting hole and on which a flange part of the objective lens is to be mounted; and three protrusions provided in the peripheral part to be spaced apart from each other and to protrude higher than a main surface of the peripheral part. Also provided is an optical pickup apparatus comprising the lens holder and an objective lens supported with a condenser lens part inserted into the mounting hole of the lens holder, and with the flange part being in contact with the three protrusions. | 09-01-2011 |
20110214138 | Diffraction Grating, Optical Pickup Device And Optical Disc Apparatus - An optical pickup device includes a semiconductor laser which emits a light beam, first and second objective lenses which focus the light beam onto a first and second optical disc, respectively, a grating which branches a light beam reflected from the second optical disc, an optical detector having a plurality of light receiving parts, which receives light beams branched by the grating, and an actuator which displaces the first and second objective lenses in a radial direction of the first optical disc and the second optical disc. The grating has a first area on which a 0-order diffraction light beam and a +1-order diffraction light beam upon reflection at the second optical disc enter, and a second area on which a 0-order diffraction light beam and a −1-order diffraction light beam upon diffraction through the second optical disc enter. | 09-01-2011 |
20110247021 | OPTICAL PICKUP - In an optical pickup for use in an optical disc device, wire rods are wound directly around a lens-coil holder to make tracking coils and focus coils. The lens-coil holder is divided into three holders, one of which holds an optical lens thereon and has on its sides wire-winding protrusions for wiring wire rods therearound to make tracking coils. The remaining holders have focus coils that are wound therearound. Alternatively, the lens-coil holder is divided into two holders, one of which has on its sides wire-winding protrusions for wiring wire rods therearound to make tracking coils. The remaining holder holds an optical lens thereon and has focus coils that are wound therearound. The lens-coil holder has a cavity for letting pass through a laser beam emitted in parallel to an optical disc surface. | 10-06-2011 |
20120030694 | OPTICAL DATA RECORDING/REPRODUCTION APPARATUS - The relation between the cover layer thickness of a data recording surface and ratio α of SCO to SCD is previously calculated and stored in a storage unit, where SCD denotes coma aberration which occurs when the data recording medium is tilted by unit angle and SCO denotes coma aberration which occurs when the objective lens is tilted by unit angle. When α | 02-02-2012 |
20120204199 | OPTICAL PICKUP DEVICE - An optical pickup device is provided, a cover of which covering a housing is prevented from deforming. A principal surface of an optical pickup device of the present invention is covered with a cover | 08-09-2012 |
20120260273 | OPTICAL PICKUP - An optical pickup includes a lens moving mechanism constructed of a lens, a lens holder holding the lens, a guide member guiding the lens holder, a lead screw including a thread groove, a motor rotating the lead screw, and a rack gear including a body fixed to the lens holder and claws fitted into the thread groove of the lead screw, in which an arm connecting the body and the claws of the rack gear is formed so that the shape of a cross section perpendicular to the rotational axis direction of the lead screw is a convex shape, a recess shape or a wave-shape. | 10-11-2012 |
20120272254 | OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS - Stable performance of additional recording and erasing and rewriting operations is allowed regardless of a change in inclination of a guide layer separable optical disc. An optical pickup device includes an angle variable reflection mirror (an optical axis angle variable element) which changes directions of optical axes of first and second light beams when the first light beam for recording or reproduction and the second light beam for servo signal detection are emitted from laser diodes and incident upon the optical disc through an objective lens. When additional recording is performed on the optical disc, the optical axis angle of the angle variable reflection mirror is adjusted such that a tracking error signal detected from a record layer with the first light beam is reduced to almost zero while tracking control is being performed on a guide layer with the second light beam. | 10-25-2012 |
20130019255 | OBJECTIVE LENS HOLDER, OBJECTIVE LENS DRIVING DEVICE USING THE SAME, OPTICAL PICKUP DEVICE, AND METHOD FOR MANUFACTURING OBJECTIVE LENS DRIVING DEVICEAANM MORIMOTO; ShunichiAACI Ota-shiAACO JPAAGP MORIMOTO; Shunichi Ota-shi JPAANM TAJIRI; NoboruAACI Ora-gunAACO JPAAGP TAJIRI; Noboru Ora-gun JPAANM MATSUZAKI; ShingoAACI Ora-gunAACO JPAAGP MATSUZAKI; Shingo Ora-gun JPAANM UCHIDA; MitsuhikoAACI Ora-gunAACO JPAAGP UCHIDA; Mitsuhiko Ora-gun JP - Provided is a compact-type objective lens (OBL) holder and the like provided with a bobbin making it possible to appropriately wind a coil therearound. An OBL holder of the present invention includes: a main surface portion provided with a fixing part on which an objective lens is fixed; and a first side-wall portion and a second side-wall portion provided with bobbins around which tracking coils for driving the OBL holder itself by using a magnetic effect are wound. Further, in the present invention, each bobbin includes a tubular portion and a through-hole penetrating the tubular portion in a thickness direction thereof. Thus, an adhesive can be supplied to the tracking coil through the through-hole. | 01-17-2013 |
20130024877 | OBJECTIVE LENS HOLDER, OBJECTIVE LENS DRIVING DEVICE USING THE SAME, OPTICAL PICKUP DEVICE, AND METHOD FOR MANUFACTURING OBJECTIVE LENS DRIVING DEVICE - Provided is an objective lens (OBL) holder and the like making it possible to easily supply an adhesive to a coil accommodated in an enclosure-shaped holder. An OBL holder of the present invention includes: a main surface portion provide with a fixing part on which an objective lens is fixed; and a first side-wall portion and a second side-wall portion provide with bobbins around each of which a tracking coil for driving the OBL holder itself by using a magnetic effect is wound. In the present invention, a communication hole provided in each of the bobbins penetrates the first side-wall portion and allows a region inside the OBL holder to communicate with the outside. A focusing coil is disposed in the region. This makes it possible to supply the adhesive to the focusing coil through the communication holes. | 01-24-2013 |
20130086600 | OPTICAL PICKUP - An optical pickup includes an object lens; a moving part including the object lens and coils; rod-shaped support members disposed in a focusing direction, one end of each of the support members being attached to side surfaces of the moving part in a tracking direction; a fixing part for fixing the other end of each of the support members; a yoke including magnets; and gel holding parts, each of the gel holding parts including walls on both sides of the support members in the tracking direction, and the support members being disposed on both sides of the moving part in the tracking direction. Each of the gel holding parts includes an opening at one end on an optical disc side in the focusing direction and includes a cutout in the wall farther from the object lens in the tracking direction, the cutout extending from an edge of the opening. | 04-04-2013 |
20130160035 | OBJECTIVE LENS HOLDER, OBJECTIVE LENS DRIVING DEVICE, OPTICAL PICKUP DEVICE, AND METHOD FOR MANUFACTURING OBJECTIVE LENS DRIVING DEVICE - Provided is an objective lens holder, an objective lens driving device, an optical pickup device, and a method for manufacturing an objective lens driving device, in which an adhesive for fixing coils can be collectively applied to many housings. In the present invention, to collectively apply an adhesive to OBL holders, contact portions are provided to the upper portion and the lower portion of each OBL holder. Specifically, four contact portions are provided to a +Df side end portion of the OBL holder at positions near corner portions of a principal surface portion, respectively. Further, contact portions are provided to a −Df side end portion of the OBL holder at positions overlapping with the above-described contact portions. | 06-20-2013 |
20130339987 | WIRE HOLDER AND WIRING LAYERS INCLUDED IN AN OBJECTIVE LENS DRIVING UNIT - Provided is an objective lens driving unit that prevents an electrical short circuit between very closely spaced second terminals in the objective lens driving unit. The objective lens driving unit is capable of being used in a slim-type optical disc drive. | 12-19-2013 |
20130339988 | APPARATUS FOR PROTECTING OPTICAL DISC DRIVES - Provided are apparatuses for grounding the objective lens driving unit of an optical pickup device. An optical pickup device includes an objective lens driving unit and a base that supports the objective lens driving unit, and wherein the objective lens driving unit includes a moving structure including an objective lens and a plurality of drive coils; a static structure comprising magnets corresponding to the plurality of drive coils, a yoke that supports the magnets, and a wire holder that has a plurality of wiring layers including a ground wiring layer; a plurality of suspension wires that connect the plurality of drive coils to the plurality of wiring layers; a supporting portion connected to the yoke and fixed to the wire holder; a projection extending from the supporting portion and disposed adjacent to the ground wiring layer; and conductive bonding material connects the ground wiring layer with the projection. | 12-19-2013 |
20140089952 | OPTICAL PICKUP - An optical pickup includes an objective lens which converges light on an optical disc, a lens holder to which the objective lens is attached, a focusing coil and a tracking coil wound around the lens holder, magnets arranged to face two side faces of the lens holder parallel to a radial direction of the optical disc, supporting members which support the lens holder, and supporting member fixation parts provided on two side faces of the lens holder orthogonal to the radial direction of the optical disc. The focusing coil is wound on parts of the lens holder on both sides of the lens holder in regard to the radial direction of the optical disc so that each portion of the focusing coil on each side is wound around a winding central axis extending in a direction parallel to the optical axis of the objective lens. | 03-27-2014 |
20140157292 | OBJECTIVE LENS DRIVING UNIT, AND OPTICAL PICKUP DEVICE AND OPTICAL DISC DRIVE INCLUDING THE OBJECTIVE LENS DRIVING UNIT - Provided is an objective lens driving unit that includes a moving structure including an objective lens and a driving coil, a yoke and a fixed portion extending from the yoke, and a wire holder that has a first surface and a second surface that is adjacent to the first surface. The fixed portion of the yoke is integrally bonded to the first surface, and a terminal unit comprising a plurality of interconnection layers is embedded on the second surface. The objective lens driving unit also includes a plurality of suspension wires that connect the driving coil to the terminal unit of the wire holder. | 06-05-2014 |
720686000 | Circular leaf spring | 1 |
20150121403 | PRINTED COIL SUBSTRATE FOR OPTICAL DISC ACTUATOR, OPTICAL DISC PICKUP, AND OPTICAL DISC DRIVE DEVICE - The present invention provides a printed coil substrate for an optical disc actuator so that the sensitivity will change as little as possible when shifting in a focal direction and a tracking direction. Although the coil patterns laminated at a corresponding position have approximately same shape, center locations in shape of the tracking coil and the focus coils are displaced between the neighboring substrate layers, and the center locations in shape are displaced by a predetermined distance toward a direction of driving the movable portion driven by the coils. Even when the coil pattern of the first layer is moved in a direction of leaving from the position where magnetic force of the magnet is strong, the coil pattern of the second layer is simultaneously moved into the position where magnetic force of the magnet is strong. Therefore, the change of the sensitivity can be relatively compensated. | 04-30-2015 |
720688000 | Vibration or resonance suppression | 1 |
20090265728 | Optical Disk Device and Parameter Selection Method - Provided is an optical disk device installed in a personal computer, including: an information creation unit that creates identification information for identifying the type of the personal computer based on a command transmitted from the personal computer; and a parameter selection unit that conducts switching, for parameter selection, concerning a parameter indicating an amount of unbalance of an optical disk, which has previously been determined depending on the type of the personal computer, in accordance with the identification information created by the information creation unit. | 10-22-2009 |