Elastic, Flexible, Pliant Or Spring Support Of Lens Or Mirror Patents (Class 369/44.15)
  • Patent number: 10216001
    Abstract: A camera shake correction apparatus (100) comprising a coil (8) provided at the movable member (2), a magnet (41) used for driving provided at the stationary member (4), facing the coil (8) in the direction orthogonal to the optical axis (C), a yoke (43) provided at the stationary member (4), facing the coil (8) and the magnet (41) used for driving in the direction of the optical axis, the yoke and the magnet used for driving constituting a magnetic circuit (6), and a magnet (11) used for biasing provided at the movable member (2), facing the yoke (43) in a non-contact manner on the opposite side of the coil (8) and the magnet (41) used for driving, the magnet (41) used for biasing applying a magnetic suction force to the yoke (43).
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: February 26, 2019
    Assignee: OLYMPUS CORPORATION
    Inventor: Yoshiaki Sueoka
  • Patent number: 10097074
    Abstract: The disclosure discloses an electromagnetic driving module which includes a base, two magnetic elements, a wiring assembly, a reference element, and a sensor element. The two magnetic elements are arranged along a reference line and positioned at two sides of the base. The wiring assembly is connected to the base and arranged adjacent to the two magnetic elements. The reference element is positioned on the base. The sensor element is adjacent to the reference elements and configured to detect the movement of the reference element to position the base. A lens device using the electromagnetic driving module is also disclosed.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: October 9, 2018
    Assignee: TDK TAIWAN CORP.
    Inventors: Shangyu Hsu, Nai-Wen Hsu
  • Patent number: 9798104
    Abstract: A zoom lens barrel houses plural lens frames holding plural movable lens units and supporting the plural movable lens units so that the movable lens units are movable forward and rearward along an optical axis. The zoom lens barrel includes a first lens frame and a second lens frame of the plural lens frames adjacent to each other, and plural first linear motors and plural second linear motors that move the first lens frame and the second lens frame forward and rearward independently for focusing associated with zooming. The plural first linear motors and the plural second linear motors are arranged in a plane that is perpendicular to the optical axis and also alternately on the same circumference that has a center on the optical axis.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: October 24, 2017
    Assignee: FUJIFILM Corporation
    Inventor: Hideo Kobayashi
  • Patent number: 9715070
    Abstract: A structure for optically aligning an optical fiber to a photonic device and method of fabrication of same. The structure optically aligns an optical fiber to the photonic device using a lens between the two which is moveable by actuator heads. The lens is moveable by respective motive sources associated with the actuator heads.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: July 25, 2017
    Assignee: Micron Technology, Inc.
    Inventors: Gurtej Sandhu, Roy Meade, Lei Bi, John Smythe
  • Patent number: 9263081
    Abstract: An optical pickup device is one in which a lens holder is held by a movable base by using a resilient wire. A restricting abutting portion is formed at a lower portion of the lens holder. When the lens holder moves excessively downward, the restricting abutting portion comes into contact with a stopper portion to restrict a downward movement of the lens holder, so that it is possible to prevent the lens holder from contacting a unit chassis. When the unit chassis is not mounted on the movable base, it is possible to prevent excessive flexing of the resilient wire caused when an opposing abutting portion of the lens holder comes into contact with the unit chassis.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: February 16, 2016
    Assignee: Alpine Electronics, Inc.
    Inventors: Mitsunori Wada, Katsunari Ashimine, Yasunobu Inaba
  • Patent number: 9110307
    Abstract: There is provided a display apparatus and an optical apparatus by which the generation of interfering pattern can be reduced while achieving miniaturization. The optical apparatus includes an optical device through which laser light passes; one or more holding members holding the optical device; and a driving section allowing the optical device to vibrate in a plane orthogonal to a light path of the laser light. Each of the holding members has an opening or a cutout through which the optical device passes at the time of vibration.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: August 18, 2015
    Assignee: SONY CORPORATION
    Inventor: Hiroshi Isobe
  • Patent number: 9076494
    Abstract: 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.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: July 7, 2015
    Assignee: HITACHI MEDIA ELECTRONICS CO., LTD.
    Inventors: Tatsuya Yamasaki, Kenji Kiya, Katsuhiko Kimura
  • Patent number: 9021513
    Abstract: 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.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: April 28, 2015
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventor: Young-bin Lee
  • Patent number: 8884573
    Abstract: A drive signal for a motor-driven mechanical system has zero (or near zero) energy at an expected resonant frequency of the mechanical system. These techniques not only generate a drive signal with substantially no energy at the expected resonant frequency, they provide a zero-energy “notch” of sufficient width to tolerate systems in which the actual resonant frequency differs from the expected resonant frequencies.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: November 11, 2014
    Assignee: Analog Devices, Inc.
    Inventors: Colin Lyden, Javier Calpe-Maravilla, Mark Murphy, Eoin English, Denis Martin O'Connor
  • Patent number: 8879374
    Abstract: Provided are an objective lens driving unit that maintains the electrical connection between suspension wires and winding bosses. The objective lens driving unit includes a plurality of winding bosses disposed at a side of the frame, each having a projection formed at its end and extending in a direction in which a suspension wire extends.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: November 4, 2014
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Jae-kuon Yun, Chan-ik Lee, Won-seok Choi
  • Patent number: 8861320
    Abstract: Provided is a lens driving unit for an optical pickup and an optical disc drive that employs the lens driving unit. The lens driving unit includes a lens frame in which an object lens and a plurality of driving coils are installed, and a plurality of suspension wires connected to the driving coils. The lens frame also includes a plurality of winding posts disposed on opposing sides of the lens frame and extending in a direction in which the suspension wires extend. According to various examples, coil ends of the driving coils are wound around the winding posts to electrically connect the driving coils to the suspension wires.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: October 14, 2014
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Young-bin Lee, Seok-gyun Lee
  • Patent number: 8752078
    Abstract: 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.
    Type: Grant
    Filed: November 17, 2012
    Date of Patent: June 10, 2014
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Young-bin Lee, Min-soo Kang, Jae-kuon Yun
  • Patent number: 8687475
    Abstract: In one embodiment, an optical pickup device includes a fixed portion 100, a movable portion 11, first and second elastic supporting members 12a and 12b, one and the other ends of which are secured to the fixed portion 100 and the movable portion 11, respectively, and an objective lens 8 secured to the movable portion 11. The objective lens 8 is arranged inside of the area that is defined between two lines that are respectively drawn from one and the other ends of the first elastic supporting member 12a perpendicularly to the first elastic supporting member 12a and outside of the area defined between the first and second elastic supporting members 12a and 12b.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: April 1, 2014
    Assignee: Panasonic Corporation
    Inventor: Koji Ieki
  • Publication number: 20140086030
    Abstract: According to one embodiment, a lens driving device includes a movable member, a fixed member, and a magnet. The movable member is configured to retain a lens and a coil. The fixed member is configured to support the movable member such that the movable member is movable in an optical axis direction of the lens using an elastic member. The magnet is configured to generate a driving force for the movable member by interaction with the coil provided in the fixed member. At least one of the coil and the magnet is provided so as to be projected from the fixed member in a direction orthogonal to the optical axis of the lens.
    Type: Application
    Filed: August 28, 2013
    Publication date: March 27, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hiroshi Shinozuka, Kazuo Watabe
  • Patent number: 8629582
    Abstract: Provided are a lens driving motor and an elastic member of the lens driving motor. The elastic member of a lens driving motor, the elastic member includes a first spring and a second spring. The second spring is different from the first spring and disposed together with the first spring on one side of a carrier to support the carrier. A first lead line of a coil and a first external power source are connected to the first spring, and a second lead line of the coil and a second external power source are connected to the second spring to supply power to the coil. Since the carrier can be assembled to other part after a (+) lead line and a (?) lead line of the coil are connected to the first and second springs, respectively, using solder, a process is simple and convenient.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: January 14, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventor: Soo Jin Jung
  • Patent number: 8619520
    Abstract: Provided is a lens driving unit for an optical pickup and an optical disc drive employing the lens driving unit. First and second driving coils are directly wound around a coil winding unit included in the lens frame, which is different from a conventional lens frame in which a driving coil is manufactured as a separate element and is separately attached to a lens frame.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: December 31, 2013
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Young-bin Lee, Soo-hyun Baek
  • Patent number: 8520487
    Abstract: An element holding device of the present invention includes: a guide portion engaging with a guide shaft; a lens fixing portion on which to fix a collimator lens; an arm portion; an insertion portion having a hole portion in which to insert a guide shaft; a wire fixing portion made by protruding a side surface of the insertion portion in a ?Y direction; and a wire fixed on the wire fixing portion. A bent portion being a leading end portion of the wire is housed in a slit. Thereby, excess deformation of a contact portion is suppressed.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: August 27, 2013
    Assignees: SANYO Electric Co., Ltd., SANYO Optec Design Co., Ltd.
    Inventors: Mitsuhiro Hashimoto, Koichi Matsuyama
  • Patent number: 8519574
    Abstract: Provided are a lens driving motor and an elastic member of the lens driving motor. The elastic member of a lens driving motor, the elastic member includes a first spring and a second spring. The second spring is different from the first spring and disposed together with the first spring on one side of a carrier to support the carrier. A first lead line of a coil and a first external power source are connected to the first spring, and a second lead line of the coil and a second external power source are connected to the second spring to supply power to the coil. Since the carrier can be assembled to other part after a (+) lead line and a (?) lead line of the coil are connected to the first and second springs, respectively, using solder, a process is simple and convenient.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: August 27, 2013
    Assignee: LG Innotek Co., Ltd.
    Inventor: Soo Jin Jung
  • Patent number: 8488422
    Abstract: A mounting structure of an optical element, includes: an optical element; an elastic member usable when the optical element is mounted; and a holding unit configured to be mounted with the optical element and the elastic member, the elastic member configured to be pressed into the holding unit, the holding unit configured to be mounted with the optical element by use of the elastic member.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: July 16, 2013
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Chikashi Yoshinaga, Nobuyuki Nakasawa
  • Publication number: 20130107683
    Abstract: Provided are an objective lens holder and the like which prevent a wire formed into tracking coils from being loosened. Tracking coils are respectively attached to bobbins provided to sidewalls of an OBL lens holder. In addition, a conducting wire hook portion is formed by projecting a part of a sidewall portion near one of the bobbins, and a conducting wire is hooked round this conducting wire hook portion. Similarly, another conducting wire hook portion is provided to a sidewall portion near another one of the bobbins, and the conducting wire formed into the corresponding tracking coil is hooked round this conducting wire hook portion. This prevents the conducting wire from being loosened.
    Type: Application
    Filed: October 24, 2012
    Publication date: May 2, 2013
    Inventors: Noboru TAJIRI, Mitsuhiko UCHIDA, Shingo MATSUZAKI
  • Patent number: 8422343
    Abstract: 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.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: April 16, 2013
    Assignee: Hitachi Media Electronics Co., Ltd.
    Inventors: Souichirou Yamada, Jun Hato, Katsuhiko Kimura, Yoshitaka Kusano
  • Patent number: 8411431
    Abstract: An exemplary electronic device includes a cover, a motherboard and a driving module both disposed at an inner side of the cover, an electronic component fixed on the motherboard, and a fan duct mounted on the motherboard and covering the electronic component. The driving module has a rotating shaft for supportively driving an optical disk rotating. The fan duct guides hot air therein toward the driving module.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: April 2, 2013
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Ji-Feng Qiu, Hong Li, Xiao-Hui Zhou, Hai-Tao Wang
  • Patent number: 8314520
    Abstract: Provided are a lens driving motor and an elastic member of the lens driving motor. The elastic member of a lens driving motor, the elastic member includes a first spring and a second spring. The second spring is different from the first spring and disposed together with the first spring on one side of a carrier to support the carrier. A first lead line of a coil and a first external power source are connected to the first spring, and a second lead line of the coil and a second external power source are connected to the second spring to supply power to the coil. Since the carrier can be assembled to other part after a (+) lead line and a (?) lead line of the coil are connected to the first and second springs, respectively, using solder, a process is simple and convenient.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: November 20, 2012
    Assignee: LG Innotek Co., Ltd.
    Inventor: Soo Jin Jung
  • Patent number: 8299744
    Abstract: Embodiments of the present invention provide a drive signal for a motor-driven mechanical system whose frequency distribution has zero (or near zero) energy at the expected resonant frequency of the mechanical system. The drive signal may be provided as a pair of steps sufficient to activate movement of the mechanical system and then park the mechanical system at a destination position. The steps are spaced in time so as to have substantially zero energy at an expected resonant frequency fR of the mechanical system. The drive signal may be filtered to broaden a zero-energy notch at the expected resonant frequency fR.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: October 30, 2012
    Assignee: Analog Devices, Inc.
    Inventors: Colin Lyden, Javier Calpe-Maravilla, Mark Murphy, Eoin English
  • Patent number: 8289825
    Abstract: The invention provides an optical disk drive. The optical disk drive comprises a pickup head, a seek control device, a lens vision characteristic decoder, and an anti lens shift device. The pickup head comprises a sled and a lens for projecting a beam on a disk. The seek control device moves the sled, and shifts the lens with a shift distance relative to an origin at a center of the sled. The equalizer derives a servo signal from a reflection of the beam. The lens vision characteristic decoder obtains a vision characteristic of the lens according to the servo signal and determines a track-on direction according to the vision characteristic. The anti lens shift device triggers the seek control device to perform a track-on process according to the track-on direction.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: October 16, 2012
    Assignee: Mediatek Inc.
    Inventors: Ming-Tsang Wu, Yu-Chun Lin, Ying-Feng Huang, Hua-Ting Chi
  • Patent number: 8284640
    Abstract: An optical pickup, having an optical pickup housing made of resin, for maintaining the heat radiation performance or capacity of a semiconductor laser, also an objective lens driving mechanism, and further a driver IC for the semiconductor laser, while keeping small-size and light-weight thereof, comprises a pickup housing, in which an optical part and a semiconductor laser are fixed; an objective lens, which is attached within the pickup housing; and an objective lens driving mechanism, which is configured to drive the objective lens, further comprising: a metal-made bottom cover, which is configured to cover a lower surface of the pickup housing and a side surface of an inner periphery of an optical disc, wherein the metal-made bottom cover and the semiconductor laser are thermally connected with each other.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: October 9, 2012
    Assignee: Hitachi Media Electronics Co., Ltd.
    Inventors: Hiroyuki Toyoda, Takehiro Hayama, Junichi Senga, Hitoshi Matsushima, Takayuki Fujimoto
  • Patent number: 8254220
    Abstract: In an objective lens actuator of an optical disk drive and the like, variations in the fixed end positions of wires serving as suspensions are reduced and tilt characteristics are improved. Terminal plates 20 fixed to a lens holder are tilted relative to wires 13 for supporting the lens holder with elasticity, and are soldered at the edges of the terminal plates 20, so that variations in the fixed end positions of the wires 13 are reduced.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: August 28, 2012
    Assignee: Panasonic Corporation
    Inventors: Yoshihiro Ikawa, Mamoru Morita
  • Patent number: 8255936
    Abstract: An objective lens drive apparatus configured to drive an objective lens that focuses a laser beam on an optical disk is disclosed, the apparatus including a holding member that holds the objective lens; at least one pair of drive magnets arranged to face each other at opposite sides of the holding member with respect a tangential direction that is parallel to a tangential line of the optical disk, the drive magnets having protruding end portions that protrude from each side of the holding member with respect to a tracking direction that is parallel to a radial direction of the optical disk; and plural drive coils configured to drive the holding member through interaction with the drive magnets, at least one of the drive coils being arranged on each side of the drive magnets with respect to the tangential direction.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: August 28, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Goichi Akanuma, No-Cheol Park, Dong-Ju Lee, Myeong-Gyu Song, Yang-Hyun Seok
  • Patent number: 8228017
    Abstract: A drive signal for a motor-driven mechanical system has zero (or near zero) energy at an expected resonant frequency of the mechanical system. The drive signal may be provided in a series of steps according to a selected row of Pascal's triangle, wherein the number of steps equals the number of entries from the selected row of Pascal's triangle, each step has a step size corresponding to a respective entry of the selected row of Pascal's triangle, and the steps are spaced from each other according to a time constant determined by an expected resonant frequency of the mechanical system.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: July 24, 2012
    Assignee: Analog Devices, Inc.
    Inventors: Colin Lyden, Javier Calpe-Maravilla, Mark Murphy, Eoin English, Denis O'Connor
  • Patent number: 8218406
    Abstract: A lens driving apparatus that can be installed in an optical unit. The lens driving apparatus includes a lead screw rotated by rotation of a motor, a lens holder movable reciprocally along a rotation axis line of the lead screw by rotation of the lead screw, a guide shaft extending in parallel with the rotation axis line. The guide shaft passes through the lens holder to guide movement of a lens held at a free end of the lens holder in a cantilevered state.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: July 10, 2012
    Assignee: Nidec Copal Corporation
    Inventors: Haruki Oe, Toru Ishimasa, Yoji Fujimura, Kenichi Watabe
  • Patent number: 8213275
    Abstract: The present invention provides an object lens actuator in which a tilt of an object lens due to a change of an ambient temperature is inhibited even when a metal member is attached to a resin based securing part. It is desirable to improve quality of writing and playing in a disc drive using the object lens actuator. This is achieved by coupling a metal member having a flat portion and bent portions to a securing part near top ends of the bent portions. The flat portion has a normal in the focusing direction. The bent portions extend in the focusing direction from the respective ends of the flat portion in the tracking direction. The securing part has an opening therethrough in the focusing direction, and in the opening, the metal member and the securing part may be coupled between each outermost two support members in the focusing direction.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: July 3, 2012
    Assignee: Hitachi Media Electronics Co., Ltd.
    Inventors: Manabu Ochi, Katsuhiko Kimura, Takahiro Yamaguchi, Souichirou Yamada
  • Patent number: 8193554
    Abstract: There is provided an optical member 1 in which a fixation member 3 supporting the light emitting member 2 is fixed to a housing 5 supporting a light receiving member 4, so as to have clearances between the fixation member 3 and the housing 5, by photocurable resin 6 bridging the clearances, recesses 7 that adjoin positions where the photocurable resin 6 is deposited, that are opened so as to allow casting of light into the recesses 7, and that are to receive portions of the photocurable resin 6 are formed on the housing 5.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: June 5, 2012
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Daisuke Fujita, Yasushi Ishihara
  • Patent number: 8169864
    Abstract: 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 tracking direction. A rolling center (O) defined as a center of the virtual circle (X) is made to coincide with all three, two, or one of a center (Os) of the gravity of a lens holder (600), a center (Os) of the drive force of the lens holder (600), and a center (Os) of the translational force of the suspensions (550A to 550F). Since the rolling center (O) coincides with all three, two, or one of those centers (Os), a rotational moment is not generated on the lens holder (600) and, therefore, generation of unnecessary resonance can be prevented.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: May 1, 2012
    Assignee: Pioneer Corporation
    Inventor: Jun Suzuki
  • Patent number: 8166495
    Abstract: An optical pickup in which the position of a magnet can be adjusted with respect to a yoke is provided. The optical pickup has an objective lens, a lens holder that holds the objective lens, a magnet disposed opposite to a side surface of the lens holder, and a yoke to the inside of which the magnet is attached. The yoke has an opening at least near the bottom of the magnet, through which the magnet can be visually observed from the outside of the yoke, the bottom being on the side of the yoke that is farther from an optical disc and the top being on the side of the yoke that is closer to the optical disc along the optical axis of the objective lens.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: April 24, 2012
    Assignee: Hitachi Media Electronics Co., Ltd.
    Inventors: Katsuhiko Kimura, Hidenao Saito, Jun Hato, Takahiro Yamaguchi
  • Patent number: 8117631
    Abstract: 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 focus direction and in a tracking direction and has a substantially rectangular flat board carrying the lens and a counter weight. The flat board is arranged orthogonal to a focus direction and carries tracking and focus coils. The pickup has a magnet configuration connected to the carrier with at least two tracking magnets, which are arranged in the tracking direction at opposite sides of the flat board and extend orthogonal to the focus direction above and/or under the flat board, and with at least two focus magnets, which are arranged in front of and behind the flat board and extend orthogonal to the direction of the tracks.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: February 14, 2012
    Assignee: Thomson Licensing
    Inventors: Michael Bammert, Tsuneo Suzuki, Rolf Dupper
  • Patent number: 8111593
    Abstract: 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 parallel to a reference plane defined on a lens holder at a predetermined reference distance or less, and are disposed at such positions as to be symmetrical to each other about a center of gravity of the lens holder. A focus coil is disposed so that among planes defined by the focus coil, a plane perpendicular to a recording surface of an optical disk is parallel to the reference plane at a predetermined reference distance or less relative to the two tilt coils and the two tracking coils.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: February 7, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Shinichi Sako
  • Patent number: 8064299
    Abstract: In an optical pick-up used in common with DVD/CD and BD, when the thickness is intended to be reduced by mounting a total reflection mirror, a cavity for passing through a laser light is necessary and, since this decreases the degree of freedom for arranging tracking coils and magnets and secondary resonance caused by a magnetic thrust in the tracking direction tends to be generated, an improvement therefor is necessary. In a lens coil holder of the optical pick-up having an objective lens and tracking coil mounted thereon each of the coils is arranged such that the thrust relative to the vertical center of the suspension wires that support the lens coil holder is well balanced. For example, most of the portion of the tracking coils is situated at one height relative to the suspension wire and the tilt coil is situated at the other remaining height.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: November 22, 2011
    Assignee: Hitachi Media Electronics Co., Ltd.
    Inventors: Jun Hato, Akio Yabe, Kazuhiro Todori, Daisuke Tomita
  • Patent number: 8040621
    Abstract: A miniature magnetic-levitated lens driving device includes a lid, a casing, a lens module, a plate spring, and a magnetic-levitated module. The lid has a hollow structure and is coupled to the casing. The casing is formed therein with a receiving space. The lens module is provided in the receiving space. The plate spring is fixed between the lid and the casing and configured to resiliently confine the lens module to the receiving space. The magnetic-levitated module is provided in the receiving space and corresponds in position to the lens module. A magnetic repulsive force is produced by and between the magnetic-levitated module and the lens module, and in consequence the lens module is magnetically suspended in the receiving space formed by the lid and the casing, so as to save power, and minimize friction and microparticles.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: October 18, 2011
    Assignee: PowerGate Optical Inc.
    Inventors: Chi Lone Chang, Chuan Yu Hsu, Wen Tsai Hsu, Chi Tai Meng
  • Patent number: 8030806
    Abstract: Provided are a lens driving motor and an elastic member of the lens driving motor. The elastic member of a lens driving motor, the elastic member includes a first spring and a second spring. The second spring is different from the first spring and disposed together with the first spring on one side of a carrier to support the carrier. A first lead line of a coil and a first external power source are connected to the first spring, and a second lead line of the coil and a second external power source are connected to the second spring to supply power to the coil. Since the carrier can be assembled to other part after a (+) lead line and a (?) lead line of the coil are connected to the first and second springs, respectively, using solder, a process is simple and convenient.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: October 4, 2011
    Assignee: LG Innotek Co., Ltd.
    Inventor: Soo Jin Jung
  • Patent number: 8023367
    Abstract: 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 lens actuation, stable writing/reading operation is implemented by always keeping a focal point of an object lens at a predetermined track of a recording surface of the disc even when being under the action of external perturbations such as a vertical deviation or a radial deviation of the disc, resulting in improved reliability. A solder-flux adhesion prevention gadget is provided between a substrate and a stopper receiving face, which may include a stepped stage, a partition protruding from the surface of the lens holder, or alternatively a combination of them arranged in order in the range.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: September 20, 2011
    Assignee: Hitachi Media Electronics Co., Ltd.
    Inventors: Manabu Ochi, Katsuhiko Kimura, Takahiro Yamaguchi
  • Patent number: 8018799
    Abstract: 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 optical axis of the return light beam reflected by the optical recording media after output from the light emitting portion, and a single photo detector receiving the return light beams passing through the adjusting element for optical axes. The first light emitting portion and the second light emitting portion are arranged in such a way that the optical axis of the first light beam and the optical axis of the third light beam approximately coincide with each other. The adjusting element for optical axes controls the axis of the return light beam of said second light beam and the single photo detector receives the return light beams of the first light beam, the second light beam and the third light beam.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: September 13, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Daisuke Matsubara, Masahisa Shinoda
  • Patent number: 8014238
    Abstract: 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 holder; and a plurality of suspension members each having one end fixed to the lens holder and another end supported by the supporting unit to enable a movement of the lens holder, wherein the supporting unit includes a fixing member, a coupling portion provided in the fixing member to couple each suspension member, magnetic fluid received in the coupling portion, and an excite device to apply a magnetic field to the magnetic fluid.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: September 6, 2011
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventors: Se June Park, Seok Jung Kim
  • Patent number: 8009523
    Abstract: To increase the speed of operations and improve vibration properties by rotating holders to wind coils in objective lens driving means of an optical pickup. In an optical pickup wherein a tracking coil and two focusing coils are wound on the same surface of a coil holder, the coil holder includes a tracking coil holder and two focusing coil holders, and each of the tracking coil holder and two focusing coil holders has a hole passing through the center of each coil.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: August 30, 2011
    Assignee: Hitachi Media Electronics Co., Ltd.
    Inventors: Katsuhiko Kimura, Yoshihiro Satou, Junichi Senga
  • Patent number: 8004937
    Abstract: 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 terminal protrusion of a lens supporting member, and moreover, the winding wire of a driving coil entwined with the terminal protrusion is electrically connected to the elastic supporting member. At this time, the terminal protrusions adjacent in the height direction of the lens supporting member are formed so as to protrude in different directions from the surface of the lens supporting member.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: August 23, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshikazu Asai
  • Patent number: 8000183
    Abstract: 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 amount of drive current. An object lens actuator comprising a lens holder having an object lens and a first coil; a first magnet fixed to a yoke; plural elastic support parts for supporting said lens holder with a first fulcrum; a moving part for supporting said elastic support parts with a second fulcrum different from said first fulcrum, and a fixed part having a moving mechanism for moving said moving part, wherein said first coil and said first magnet constitute a first magnetic circuit, said first magnetic circuit makes said lens holder movable in a focusing direction, a tracking direction and a radial tilt direction of an optical disk for read/write, and said moving mechanism makes said moving part movable.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: August 16, 2011
    Assignee: Hitachi Media Electronics Co., Ltd.
    Inventors: Yoshihiro Satou, Hidenao Saito, Jun Hato, Ryuichiro Mizuno, Katsuhiko Kimura
  • Patent number: 7995450
    Abstract: In an optical element feeding device and an optical pickup unit using the same, in order to make the device compact and light and achieve a stable operation, the device has a main shaft and a sub shaft supporting a movable frame in which an optical element is arranged in such a manner as to be movable in a direction of an optical axis, a stepping motor, a lead screw rotating on the basis of a rotation of the stepping motor, a resin nut engaging with the lead screw and being movable in the direction of the optical axis on the basis of the rotation of the lead screw, and a spring pressing the movable frame in the direction of the optical axis so as to bring the movable frame into contact with the nut, and a cushioning material is provided between the nut and the movable frame so as to connect the nut and the movable frame.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: August 9, 2011
    Assignee: Hitachi Media Electronics Co., Ltd.
    Inventors: Seiji Ono, Naomitsu Kuroda, Eiji Okubo, Yasushi Kinoshita
  • Patent number: 7990813
    Abstract: 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 wall connects the first and second walls. A lubricant tray is surrounded by the three walls and the shaft. By the shaft being attached to an end side surface of the lubricant tray, the shaft can be integrally formed with the housing. A radius of curvature or an angle formed on a horizontal cross-section of the three walls is larger than a radius of curvature or an angle formed between one of the three walls and the lubricant tray.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: August 2, 2011
    Assignee: Hitachi Media Electronics Co., Ltd.
    Inventors: Rika Nomura, Kazumi Takahashi, Seiichi Kato, Yasushi Kinoshita, Kazuhiro Todori
  • Patent number: 7986594
    Abstract: 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 least one cutaway section provided as corresponding to the wire, having a concavity to receive at least partially the wire in cross section orthogonal to a longitudinal direction of the wire, the concavity curving in a direction parallel to the cross section of the wire, and a land formed around the cutaway section, the wire being soldered to the land at the second end while the wire is being received at least partially by the concavity.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: July 26, 2011
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Takao Aoki, Masaki Murayama
  • Patent number: 7969829
    Abstract: 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 a driving means for at least driving the objective lens in a tracking direction together with the lens holder. The linear suspension springs have narrowed or widened end compared with the other end in plan view from an optical axis direction. The lens holder is supported to be driven in the tracking direction, by having the cross point of the two lines, which pass the suspension spring ends on one side and are vertical to the extending directions of the linear suspension springs, respectively, at the driving center.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: June 28, 2011
    Assignee: Pioneer Corporation
    Inventor: Kazutaka Goami
  • Patent number: 7948696
    Abstract: In an objective lens actuator of an optical disk drive and the like, variations in the fixed end positions of wires serving as suspensions are reduced and tilt characteristics are improved. When wires 13 are fixed by soldering, a deformation caused by soldering on the wires 13 is minimized by providing heat absorbing members 25 and 26 which hold the wires 13 near soldering positions to absorb soldering heat.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: May 24, 2011
    Assignee: Panasonic Corporation
    Inventors: Yoshihiro Ikawa, Mamoru Morita