HK181495A - Optical pickup device - Google Patents

Optical pickup device

Info

Publication number
HK181495A
HK181495A HK181495A HK181495A HK181495A HK 181495 A HK181495 A HK 181495A HK 181495 A HK181495 A HK 181495A HK 181495 A HK181495 A HK 181495A HK 181495 A HK181495 A HK 181495A
Authority
HK
Hong Kong
Prior art keywords
pickup device
optical pickup
optical
pickup
Prior art date
Application number
HK181495A
Other languages
English (en)
Inventor
Shigeki Tsuji
Hiroshi Ogata
Original Assignee
Sharp Kk
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 Sharp Kk filed Critical Sharp Kk
Publication of HK181495A publication Critical patent/HK181495A/xx

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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • 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
    • 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
    • G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)
HK181495A 1988-03-17 1995-11-30 Optical pickup device HK181495A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63065512A JPH0642288B2 (ja) 1988-03-17 1988-03-17 光学式ピックアップ装置

Publications (1)

Publication Number Publication Date
HK181495A true HK181495A (en) 1995-12-08

Family

ID=13289175

Family Applications (1)

Application Number Title Priority Date Filing Date
HK181495A HK181495A (en) 1988-03-17 1995-11-30 Optical pickup device

Country Status (6)

Country Link
US (1) US4918300A (ko)
EP (1) EP0333511B1 (ko)
JP (1) JPH0642288B2 (ko)
KR (1) KR910009104B1 (ko)
DE (1) DE68912369T2 (ko)
HK (1) HK181495A (ko)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539354B1 (en) * 1987-08-24 1997-06-04 Sharp Kabushiki Kaisha Optical pickup apparatus
US5146242A (en) * 1991-03-15 1992-09-08 Eastman Kodak Company Writing beam angular alignment device
KR950004797B1 (ko) * 1991-12-31 1995-05-10 삼성전자주식회사 레이져 디스크 플레이어의 광픽업 장치
JP2807589B2 (ja) * 1992-02-13 1998-10-08 シャープ株式会社 光源ユニット及び該光源ユニットを使用した光学ヘッド
US5412631A (en) * 1992-07-10 1995-05-02 Matsushita Electric Industrial Co., Ltd. Optical head apparatus for storing, reading or erasing information, and optical information reproducing method and optical information apparatus for optically reading information stored in an optical memory
JP3260426B2 (ja) * 1992-07-27 2002-02-25 松下電器産業株式会社 光学式ピックアップ装置
KR0171076B1 (ko) * 1994-05-13 1999-04-15 배순훈 서로 다른 파장의 레이저 비임을 동시에 각각 발생하여 한쪽면에 복수개의 기록층을 가지는 광디스크를 기록/재생하는 광 픽업 시스템
JP7398878B2 (ja) * 2019-04-23 2023-12-15 株式会社小糸製作所 光学素子および光源装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7703123A (nl) * 1977-03-23 1978-09-26 Philips Nv Inrichting voor het uitlezen van een optische stralingsreflekterende registratiedrager.
US4473746A (en) * 1981-07-30 1984-09-25 Bell & Howell Company Multiple head optical scanner
JPH0675297B2 (ja) * 1981-08-28 1994-09-21 株式会社日立製作所 光学的情報記録再生装置
NL8104589A (nl) * 1981-10-08 1983-05-02 Philips Nv Optische aftasteenheid.
JPS60131648A (ja) * 1983-12-19 1985-07-13 Toshiba Corp 光学ヘツド

Also Published As

Publication number Publication date
JPH01237935A (ja) 1989-09-22
EP0333511A2 (en) 1989-09-20
EP0333511B1 (en) 1994-01-19
JPH0642288B2 (ja) 1994-06-01
KR910009104B1 (ko) 1991-10-28
DE68912369D1 (de) 1994-03-03
KR890015215A (ko) 1989-10-28
DE68912369T2 (de) 1994-08-04
EP0333511A3 (en) 1990-07-11
US4918300A (en) 1990-04-17

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Legal Events

Date Code Title Description
PF Patent in force
PE Patent expired

Effective date: 20090316