MY128951A - An optical pickup actuator and its damping device - Google Patents

An optical pickup actuator and its damping device

Info

Publication number
MY128951A
MY128951A MYPI98002151A MYPI9802151A MY128951A MY 128951 A MY128951 A MY 128951A MY PI98002151 A MYPI98002151 A MY PI98002151A MY PI9802151 A MYPI9802151 A MY PI9802151A MY 128951 A MY128951 A MY 128951A
Authority
MY
Malaysia
Prior art keywords
optical pickup
pickup actuator
damping device
resonance
actuator
Prior art date
Application number
MYPI98002151A
Inventor
Kyung-Sik Shin
Jeen-Gie Kim
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of MY128951A publication Critical patent/MY128951A/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/535—Magnetorheological [MR] fluid dampers
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
    • G11B33/08—Insulation or absorption of undesired vibrations or sounds
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

DISCLOSED IS DAMPING DEVICE OF AN OPTICAL PICKUP ACTUATOR IN WHICH A DAMPING FLUID FOR MINIMIZING A RESONANCE OF THE ACTUATOR IS PUT INTO A GAP BETWEEN A MAGNETIC (5,5'') OF A MAGNETIC CIRCUIT UNIT OF THE OPTICAL PICKUP ACTUATOR AND A LENS HOLDER (20) OPPOSITE TO THE MAGNET. THE DAMPING MATERIAL INCLUDES FERROFLUID (20) . ACCORDING TO THE PRESENT INVENTION, THE RESONANCE MAGNITUDE Q IS REDUCED AT THE RESONANCE FREQUENCY F SO THAT THE GREATLY IMPROVED EFFECT CAN BE OBTAINED.(FIG. 3)
MYPI98002151A 1997-05-19 1998-05-14 An optical pickup actuator and its damping device MY128951A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019970019231A KR100238033B1 (en) 1997-05-19 1997-05-19 Damper of optical pickup actuator

Publications (1)

Publication Number Publication Date
MY128951A true MY128951A (en) 2007-03-30

Family

ID=19506216

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI98002151A MY128951A (en) 1997-05-19 1998-05-14 An optical pickup actuator and its damping device

Country Status (5)

Country Link
KR (1) KR100238033B1 (en)
AU (1) AU7084198A (en)
MY (1) MY128951A (en)
TW (1) TW421787B (en)
WO (1) WO1998053449A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020087185A (en) * 2001-05-14 2002-11-22 엘지전자 주식회사 Extruded lens type optical pickup actuator
KR100486280B1 (en) * 2002-11-15 2005-04-29 삼성전자주식회사 Optical pickup actuator for reducing vibration, optical pickup apparauts and optical recording/reproducing apparatus adopting the same
KR100616662B1 (en) 2005-01-13 2006-08-28 삼성전기주식회사 Focus control device with improved vibration and impact resistance

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01116916A (en) * 1987-10-29 1989-05-09 Nec Corp Head cleaning system for cartridge magnetic tape device
JPH08147734A (en) * 1994-11-18 1996-06-07 Sony Corp Biaxial actuator
DE69600298D1 (en) * 1995-03-31 1998-06-25 Daewoo Electronics Co Ltd Optical scanner
JPH08306058A (en) * 1995-04-28 1996-11-22 Mitsumi Electric Co Ltd Optical head actuator and optical pickup device including the same

Also Published As

Publication number Publication date
KR100238033B1 (en) 2000-02-01
KR19980083785A (en) 1998-12-05
WO1998053449A1 (en) 1998-11-26
AU7084198A (en) 1998-12-11
TW421787B (en) 2001-02-11

Similar Documents

Publication Publication Date Title
CA2391863A1 (en) Eyeglass accessory frame, eyeglass device, and method of forming a magnetic eyeglass appliance
AU3825689A (en) Shielded magnetic assembly for use with a hearing aid
ATE416590T1 (en) IMPROVED TRANSDUCER WITH VIBRATION MASS COIL PAIR
ATE177583T1 (en) VIBRATION TRANSDUCER
CA2083988A1 (en) Balanced armature transducers with transverse gap
EP0467202A3 (en) Arrangement for testing of objects with magnetic properties
KR900003907B1 (en) Magnetic objective lens for use in a scaning electron microscope
WO2000070905A3 (en) Electromagnetic transducer and portable communication device
KR870009352A (en) Electromechanical transducers
MY123668A (en) Objective lens driving device
WO2003010998A1 (en) Magnetic shielding of loud speaker sensing coil
PT840649E (en) MAGNETIC FILTER DEVICE
DK164621C (en) ELECTRODYNAMIC TRANSDUCER
ES2155056T3 (en) PERMANENT CYLINDRICAL MAGNET TERMINALS.
IT1255186B (en) ELECTRICAL APPARATUS WITH A SEALED CASE, AS WELL AS A PROCEDURE FOR ITS MANUFACTURE
SU1489964A1 (en) Magnetic holder
EP1185140A3 (en) Electroacustic transducer
JPS5723396A (en) Field system device
SE8900524D0 (en) MAGNETIC FLOWER WHEEL DEVICE
IL136980A (en) Method for optimizing the magnetic field of a periodic permanent magnet focusing device
SE8105168L (en) MAGNETIC FLOWER WHEELS AND SETS FOR MANUFACTURING THIS
EP0187304A3 (en) Spectacles frame
KR970059793U (en) Magnet mounting device for coil separator of deflection yoke
KR970011817B1 (en) Optical pick-up actuator
NZ505445A (en) a circulator and components thereof