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1. (WO1998053449) AN OPTICAL PICKUP ACTUATOR AND ITS DAMPING DEVICE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/053449 International Application No.: PCT/KR1998/000108
Publication Date: 26.11.1998 International Filing Date: 29.04.1998
Chapter 2 Demand Filed: 07.09.1998
IPC:
F16F 6/00 (2006.01) ,F16F 15/023 (2006.01) ,G11B 7/09 (2006.01) ,G11B 33/08 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F
SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
6
Magnetic springs; Fluid magnetic springs
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F
SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
15
Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
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 system
023
using fluid means
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
08
Disposition or mounting of heads or light sources relatively to record carriers
09
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
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
33
Constructional parts, details or accessories not provided for in the other groups of this subclass
02
Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
08
Insulation or absorption of undesired vibrations or sounds
Applicants:
SAMSUNG ELECTRONICS CO., LTD. [KR/KR]; 416, Maetan-dong Paldal-gu Suwon Kyonggi-do 442-370, KR (AT, AU, BE, BR, CA, CH, CN, CY, DE, DK, ES, FI, FR, GB, GR, ID, IE, IT, JP, LU, MC, NL, PT, RU, SE, SG)
SHIN, Kyung-sik [KR/KR]; KR (UsOnly)
KIM, Jeen-gie [KR/KR]; KR (UsOnly)
Inventors:
SHIN, Kyung-sik; KR
KIM, Jeen-gie; KR
Agent:
JUNG, Hyun-young; 3rd floor, Namsung Building 1474-12, Silim 11-dong Gwanak-gu Seoul 151-021, KR
Priority Data:
1997/1923119.05.1997KR
Title (EN) AN OPTICAL PICKUP ACTUATOR AND ITS DAMPING DEVICE
(FR) ACTIONNEUR DE TETE DE LECTURE OPTIQUE ET DISPOSITIF AMORTISSEUR
Abstract:
(EN) Disclosed is a damping device of an optical pickup actuator in which a damping fluid for removing a resonance of the actuator is put into a magnetic air gap formed between a magnet of a magnetic circuit unit of the optical pickup actuator and a lens holder facing the magnet to attach each other. The damping fluid includes ferrofluids having sub-micron sized particles in a carrier liquid.
(FR) Dispositif amortisseur d'un actionneur de tête de lecture optique dans lequel un fluide d'amortissement destiné à supprimer une résonance de l'actionneur est introduit dans un entrefer magnétique formé entre un aimant et un circuit magnétique de l'actionneur optique et un porte-objectif faisant face à l'aimant pour attacher lesdits éléments l'un à l'autre. Le fluide d'amortissement comporte des ferrofluides constitués de particules de taille inférieure au micron dans un liquide porteur.
front page image
Designated States: AU, BR, CA, CN, ID, JP, RU, SG, US
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
AU1998070841