WO2007071544A3 - Device for accessing optical recording carriers - Google Patents

Device for accessing optical recording carriers Download PDF

Info

Publication number
WO2007071544A3
WO2007071544A3 PCT/EP2006/069264 EP2006069264W WO2007071544A3 WO 2007071544 A3 WO2007071544 A3 WO 2007071544A3 EP 2006069264 W EP2006069264 W EP 2006069264W WO 2007071544 A3 WO2007071544 A3 WO 2007071544A3
Authority
WO
WIPO (PCT)
Prior art keywords
optical recording
recording carriers
magnet
accessing optical
main
Prior art date
Application number
PCT/EP2006/069264
Other languages
French (fr)
Other versions
WO2007071544A2 (en
Inventor
Michael Bammert
Tsuneo Suzuki
Friedhelm Zucker
Original Assignee
Thomson Licensing
Michael Bammert
Tsuneo Suzuki
Friedhelm Zucker
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson Licensing, Michael Bammert, Tsuneo Suzuki, Friedhelm Zucker filed Critical Thomson Licensing
Publication of WO2007071544A2 publication Critical patent/WO2007071544A2/en
Publication of WO2007071544A3 publication Critical patent/WO2007071544A3/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0933—Details of stationary parts
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0932—Details of sprung supports

Abstract

Disclosed is a device for accessing optical recording carriers using an optical scanner (1), with a lens holder (2) having actuator coils (16, 26, 36, 36') attached thereto, and with a magnet configuration (11) for generating a magnetic field that permeates the actuator coils (16, 26, 36, 36'). For improving such a device with respect to actuator sensitivity, the magnet configuration (11) consists of a main magnet (21) and one or more side magnets (22, 23) attached to sides of the main magnet (21), the side magnets (22, 23) having a side magnetisation direction (32) perpendicular to the main magnetisation direction (31).
PCT/EP2006/069264 2005-12-20 2006-12-04 Device for accessing optical recording carriers WO2007071544A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05112497A EP1801797A1 (en) 2005-12-20 2005-12-20 Apparatus for accessing optical recording media
EP05112497.2 2005-12-20

Publications (2)

Publication Number Publication Date
WO2007071544A2 WO2007071544A2 (en) 2007-06-28
WO2007071544A3 true WO2007071544A3 (en) 2007-08-09

Family

ID=36648668

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/069264 WO2007071544A2 (en) 2005-12-20 2006-12-04 Device for accessing optical recording carriers

Country Status (2)

Country Link
EP (1) EP1801797A1 (en)
WO (1) WO2007071544A2 (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6288853B1 (en) * 1999-08-27 2001-09-11 Kabushiki Kaisha Sankyo Seiki Seisakusho Optical pickup device
US20010030815A1 (en) * 2000-04-03 2001-10-18 Lg Electronics Inc. Optical pick-up actuator
US20020071189A1 (en) * 2000-12-13 2002-06-13 Takehide Ohno Objective lens actuating device
US20030128443A1 (en) * 2002-01-08 2003-07-10 Samsung Electronics Co., Ltd. Optical pickup actuator
US20030218962A1 (en) * 2002-05-24 2003-11-27 Samsung Electronics Co., Ltd. Actuator used with an optical pickup
US20040022168A1 (en) * 2002-05-31 2004-02-05 Tdk Corporation Optical head device and optical reproducing apparatus using the same
US20040190402A1 (en) * 2003-03-25 2004-09-30 Funai Electric Co., Ltd. Objective lens driving device for optical head
EP1544853A2 (en) * 2003-12-17 2005-06-22 Samsung Electronics Co., Ltd. Magnetic circuit and optical recording and/or reproducing apparatus employing the same
WO2005066945A1 (en) * 2004-01-12 2005-07-21 Mempile Inc. Lens actuator assembly for optical head
US20050166217A1 (en) * 2002-06-04 2005-07-28 Van Rooij Johannes A. 3D Actuator for optical disc system

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6288853B1 (en) * 1999-08-27 2001-09-11 Kabushiki Kaisha Sankyo Seiki Seisakusho Optical pickup device
US20010030815A1 (en) * 2000-04-03 2001-10-18 Lg Electronics Inc. Optical pick-up actuator
US20020071189A1 (en) * 2000-12-13 2002-06-13 Takehide Ohno Objective lens actuating device
US20030128443A1 (en) * 2002-01-08 2003-07-10 Samsung Electronics Co., Ltd. Optical pickup actuator
US20030218962A1 (en) * 2002-05-24 2003-11-27 Samsung Electronics Co., Ltd. Actuator used with an optical pickup
US20040022168A1 (en) * 2002-05-31 2004-02-05 Tdk Corporation Optical head device and optical reproducing apparatus using the same
US20050166217A1 (en) * 2002-06-04 2005-07-28 Van Rooij Johannes A. 3D Actuator for optical disc system
US20040190402A1 (en) * 2003-03-25 2004-09-30 Funai Electric Co., Ltd. Objective lens driving device for optical head
EP1544853A2 (en) * 2003-12-17 2005-06-22 Samsung Electronics Co., Ltd. Magnetic circuit and optical recording and/or reproducing apparatus employing the same
WO2005066945A1 (en) * 2004-01-12 2005-07-21 Mempile Inc. Lens actuator assembly for optical head

Also Published As

Publication number Publication date
WO2007071544A2 (en) 2007-06-28
EP1801797A1 (en) 2007-06-27

Similar Documents

Publication Publication Date Title
TW200719564A (en) Optical device
WO2005024857A3 (en) Permanent magnet assembly
NO20031073D0 (en) Permanent magnet, magnetic core using this as magnetic bias and inductance using the core
JP2007110822A (en) Periodic magnetic field generator, manufacturing method therefor, and linear motor using this periodic magnetic field generator
ATE496367T1 (en) DEMAGNETIZING DEVICE WITH PERMANENT MAGNETS
JP2008125263A5 (en)
EP1560207A3 (en) Magnetic circuit, and optical pickup actuator and optical recording and/or reproducing apparatus using the magnetic circuit
TW200609555A (en) Lens driving device, image taking device, and method for adjusting lens position in an image taking device
AU2003240218A8 (en) 3d actuator for optical disc system
WO2006138171A3 (en) Optical fiber lateral scanner for a miniature optical fiber probe
WO2007071544A3 (en) Device for accessing optical recording carriers
BRPI0417002A (en) device for detecting movements and / or positions of an object
SG130028A1 (en) Magnetic read head with hard bias magnet structure
EP0789250A3 (en) Thin film giant magnetoresistive cip transducer with flux guide yoke structure
EP1544853A3 (en) Magnetic circuit and optical recording and/or reproducing apparatus employing the same
DE60106344D1 (en) OPTICAL SCANNER WITH AN ACTUATOR FOR A SLIDING COLLIMATOR LENS
WO2009072330A1 (en) Objective lens drive device and optical pickup device
EP1729295A3 (en) Optical pickup actuator and optical recording and/or reproducing apparatus having the same
EP1394784A3 (en) Objective lens driving apparatus used with an optical pickup
ATE326776T1 (en) CIRCULATOR
EP1522997A3 (en) Actuator of optical pick-up device
ATE503067T1 (en) OPEN ACCESS MAGNETIC SEPARATOR
TW200709200A (en) Actuator of optical pickup head with horizontal-arranged magnetic field generator and coil apparatus
US20060277560A1 (en) Objective lens actuator
WO2007061628A3 (en) Linear stage including an integrated actuator and associated methods

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06830330

Country of ref document: EP

Kind code of ref document: A2