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1. WO2003007295 - OPTICAL PICKUP DEVICE, AND RECORDING AND/OR REPRODUCING DEVICE

Publication Number WO/2003/007295
Publication Date 23.01.2003
International Application No. PCT/JP2002/007070
International Filing Date 11.07.2002
IPC
G11B 7/013 2006.1
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
007Arrangement of the information on the record carrier, e.g. form of tracks
013for discrete information, i.e. where each information unit is stored in a distinct location
G11B 7/085 2006.1
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
08Disposition or mounting of heads or light sources relatively to record carriers
085with provision for moving the light beam into, or out of, its operative position.
G11B 7/12 2006.1
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
G11B 7/135 2006.1
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
135Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
G11B 11/105 2006.1
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
11Recording on, or reproducing from, the same record carrier wherein for these two operations the methods or means are covered by different main groups of groups G11B3/-G11B7/212; Record carriers therefor
10using recording by magnetisation or demagnetisation
105using a beam of light or a magnetic field for recording and a beam of light for reproducing, e.g. light-induced thermo-magnetic recording, Kerr effect reproducing
CPC
G11B 11/10532
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
11Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
10using recording by magnetic means ; or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
105using a beam of light or a magnetic field for recording ; by change of magnetisation; and a beam of light for reproducing, ; i.e. magneto-optical,; e.g. light-induced thermo-magnetic recording, ; spin magnetisation recording,; Kerr ; or Faraday; effect reproducing
10532Heads
G11B 7/00
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
G11B 7/085
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
08Disposition or mounting of heads or light sources relatively to record carriers
085with 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
G11B 7/08582
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
08Disposition or mounting of heads or light sources relatively to record carriers
085with 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
0857Arrangements for mechanically moving the whole head
08582Sled-type positioners
G11B 7/121
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
121Protecting the head, e.g. against dust or impact with the record carrier
G11B 7/1374
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
135Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
1372Lenses
1374Objective lenses
Applicants
  • SONY CORPORATION [JP]/[JP] (AllExceptUS)
  • OSADA, Yasuo [JP]/[JP] (UsOnly)
  • SHIMADA, Yutaka [JP]/[JP] (UsOnly)
Inventors
  • OSADA, Yasuo
  • SHIMADA, Yutaka
Agents
  • KOIKE, Akira
Priority Data
2001-21128011.07.2001JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) OPTICAL PICKUP DEVICE, AND RECORDING AND/OR REPRODUCING DEVICE
(FR) DISPOSITIF DE CAPTURE OPTIQUE ET DISPOSITIF D'ENREGISTREMENT ET/OU DE REPRODUCTION
Abstract
(EN) An optical pickup device comprising a feed screw (22) for moving an optical pickup (11) having an objective lens (14) in the radial direction of an optical disk (D), a slide member (24) slidable to the optical pickup with a shutter (47) connected to the optical pickup by a coil spring (25) to urge the objective lens in an opening direction, and a transmission member (51) for connecting the feed screw to the slide member. The slide member moves the optical pickup in the radial direction of the optical disk (D) when the feed screw is turned, and further slides against the urging force of the coil spring when the optical pickup is moved to the lead−in position, and closes the objective lens by the shutter.
(FR) La présente invention concerne un dispositif de capture optique comprenant une vis d'avance (22), conçue pour déplacer un capteur optique (11) qui présente un objectif (14) dans la direction radiale d'un disque optique (D), un élément coulissant (24), qui peut coulisser par rapport au capteur optique et qui présente un volet (47) connecté au capteur optique par un ressort hélicoïdal (25) pour contraindre l'objectif dans une direction d'ouverture, ainsi qu'un élément de transmission (51), conçu pour relier la vis d'avance à l'élément coulissant. Ledit élément coulissant (24) déplace le disque optique dans la direction radiale du disque optique (D) lorsque la vis d'avance est soumise à une rotation, puis coulisse à l'encontre de la force de contrainte du ressort hélicoïdal lorsque le capteur optique est déplacé en position d'entrée et obture l'objectif au moyen du volet.
Latest bibliographic data on file with the International Bureau