TW376516B - Optical spot generation device for recording medium - Google Patents

Optical spot generation device for recording medium

Info

Publication number
TW376516B
TW376516B TW087111884A TW87111884A TW376516B TW 376516 B TW376516 B TW 376516B TW 087111884 A TW087111884 A TW 087111884A TW 87111884 A TW87111884 A TW 87111884A TW 376516 B TW376516 B TW 376516B
Authority
TW
Taiwan
Prior art keywords
recording medium
generation device
optical spot
track
spot generation
Prior art date
Application number
TW087111884A
Other languages
English (en)
Inventor
Hiroshi Miyazawa
Original Assignee
Kenwood Corp
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 Kenwood Corp filed Critical Kenwood Corp
Application granted granted Critical
Publication of TW376516B publication Critical patent/TW376516B/zh

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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses
    • G11B7/1376—Collimator lenses
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1362—Mirrors
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses
    • G11B7/1374—Objective lenses
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1395—Beam splitters or combiners
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/17—Card-like record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
TW087111884A 1997-08-19 1998-07-21 Optical spot generation device for recording medium TW376516B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9236476A JPH1166593A (ja) 1997-08-19 1997-08-19 記録媒体用光スポット生成装置

Publications (1)

Publication Number Publication Date
TW376516B true TW376516B (en) 1999-12-11

Family

ID=17001311

Family Applications (1)

Application Number Title Priority Date Filing Date
TW087111884A TW376516B (en) 1997-08-19 1998-07-21 Optical spot generation device for recording medium

Country Status (10)

Country Link
US (1) US6538976B1 (zh)
EP (1) EP1016080B1 (zh)
JP (1) JPH1166593A (zh)
KR (1) KR20010022794A (zh)
CN (1) CN1109337C (zh)
DE (1) DE69809273T2 (zh)
HK (1) HK1027893A1 (zh)
MY (1) MY132833A (zh)
TW (1) TW376516B (zh)
WO (1) WO1999009553A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007018627A (ja) * 2005-07-08 2007-01-25 Konica Minolta Opto Inc 光ピックアップ装置、レンズユニット、及び、レンズユニットの調整方法
CN104282319B (zh) * 2014-06-25 2018-02-02 东莞华强信息科技有限公司 对光学拾音头中的物镜进行位置调整的方法和装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4823334A (en) * 1985-11-27 1989-04-18 Matsushita Electric Industrial Co., Ltd. Optical head with easily adjustable collimator having two lens components
JPH0752522B2 (ja) * 1986-10-21 1995-06-05 三菱電機株式会社 光学ヘッド装置
DE68909663T2 (de) * 1988-04-26 1994-04-07 Philips Nv Anordnung zum optischen Abtasten eines magneto-optischen Aufzeichnungsträgers.

Also Published As

Publication number Publication date
KR20010022794A (ko) 2001-03-26
CN1267386A (zh) 2000-09-20
EP1016080B1 (en) 2002-11-06
DE69809273D1 (de) 2002-12-12
CN1109337C (zh) 2003-05-21
EP1016080A1 (en) 2000-07-05
DE69809273T2 (de) 2003-07-10
JPH1166593A (ja) 1999-03-09
WO1999009553A1 (en) 1999-02-25
MY132833A (en) 2007-10-31
HK1027893A1 (en) 2001-01-23
US6538976B1 (en) 2003-03-25

Similar Documents

Publication Publication Date Title
KR900002999B1 (en) Optical pickup
EP0346121A3 (en) Optical pickup head having a hologram-associated objective lens and optical information processing apparatus using the same
JPS57130240A (en) Optical information recording and reproducing device and information recording medium for it
EP1120779A3 (en) Optical storage apparatus
MY120954A (en) Hologram optical pick-up using two laser source
MY115096A (en) Optical pickup
EP0336328A3 (en) Apparatus for optically recording and reproducing information
MY131532A (en) Recording medium having track formed of land portion and groove portion, and reproducing apparatus therefor
EP0379363A3 (en) Optical head device for use in optical disk system
MY121078A (en) Biaxial actuator, optical part and optical disk device
EP0285661A4 (en) POSITION DETECTOR OF THE OPTICAL FOCUS OF AN OPTICAL DATA STORAGE / READING DEVICE.
MY125207A (en) Optical pickup device capable of detecting stable error signal
MY104267A (en) Optical pick-up devices
MY119511A (en) Optical pickup using an optical phase plate
KR960008786A (ko) 기록 매체의 광학 기록/판독 시스템
CA2013836A1 (en) Optical recording and reproducing apparatus
TW347476B (en) Light pickup
TW376516B (en) Optical spot generation device for recording medium
CA2041928A1 (en) Optical head
EP1091356A3 (en) Bias voltage controlling apparatus, information reproducing apparatus and information recording apparatus
TW200634788A (en) Optical pickup unit and information recording apparatus using the same
EP0886267A4 (en) FOCUSING DEVICE AND PROVIDED OPTICAL DEVICE
ES8206896A1 (es) Un aparato optico para inscribir y-o leer pistas de registroen una superficie de registro de un portador de registro
EP0786766A3 (en) Optical pickup device and reproducing apparatus for optical recording medium
EP0367465A3 (en) Optical pickup devices