KR20010022794A - 기록 매체용 광 스폿 형성 장치 - Google Patents

기록 매체용 광 스폿 형성 장치 Download PDF

Info

Publication number
KR20010022794A
KR20010022794A KR1020007001394A KR20007001394A KR20010022794A KR 20010022794 A KR20010022794 A KR 20010022794A KR 1020007001394 A KR1020007001394 A KR 1020007001394A KR 20007001394 A KR20007001394 A KR 20007001394A KR 20010022794 A KR20010022794 A KR 20010022794A
Authority
KR
South Korea
Prior art keywords
collimator
light
optical element
track
forming apparatus
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
KR1020007001394A
Other languages
English (en)
Korean (ko)
Inventor
미야자와히로시
Original Assignee
오카 마코토
가부시키가이샤 캔우드
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 오카 마코토, 가부시키가이샤 캔우드 filed Critical 오카 마코토
Publication of KR20010022794A publication Critical patent/KR20010022794A/ko
Ceased legal-status Critical Current

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
    • G11B7/1362—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
    • G11B7/1372—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
    • G11B7/1395—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)
KR1020007001394A 1997-08-19 1998-08-05 기록 매체용 광 스폿 형성 장치 Ceased KR20010022794A (ko)

Applications Claiming Priority (3)

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
JP97-236476 1997-08-19
PCT/JP1998/003486 WO1999009553A1 (en) 1997-08-19 1998-08-05 Optical spot generation device for recording medium

Publications (1)

Publication Number Publication Date
KR20010022794A true KR20010022794A (ko) 2001-03-26

Family

ID=17001311

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020007001394A Ceased KR20010022794A (ko) 1997-08-19 1998-08-05 기록 매체용 광 스폿 형성 장치

Country Status (9)

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

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
DE69809273T2 (de) 2003-07-10
EP1016080B1 (en) 2002-11-06
DE69809273D1 (de) 2002-12-12
TW376516B (en) 1999-12-11
JPH1166593A (ja) 1999-03-09
MY132833A (en) 2007-10-31
EP1016080A1 (en) 2000-07-05
CN1109337C (zh) 2003-05-21
WO1999009553A1 (en) 1999-02-25
US6538976B1 (en) 2003-03-25
CN1267386A (zh) 2000-09-20
HK1027893A1 (en) 2001-01-23

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Date Code Title Description
PA0105 International application

Patent event date: 20000211

Patent event code: PA01051R01D

Comment text: International Patent Application

PG1501 Laying open of application
A201 Request for examination
PA0201 Request for examination

Patent event code: PA02012R01D

Patent event date: 20030317

Comment text: Request for Examination of Application

E902 Notification of reason for refusal
PE0902 Notice of grounds for rejection

Comment text: Notification of reason for refusal

Patent event date: 20041216

Patent event code: PE09021S01D

E601 Decision to refuse application
PE0601 Decision on rejection of patent

Patent event date: 20050628

Comment text: Decision to Refuse Application

Patent event code: PE06012S01D

Patent event date: 20041216

Comment text: Notification of reason for refusal

Patent event code: PE06011S01I