DE69418528D1 - Optischer Kopf - Google Patents

Optischer Kopf

Info

Publication number
DE69418528D1
DE69418528D1 DE69418528T DE69418528T DE69418528D1 DE 69418528 D1 DE69418528 D1 DE 69418528D1 DE 69418528 T DE69418528 T DE 69418528T DE 69418528 T DE69418528 T DE 69418528T DE 69418528 D1 DE69418528 D1 DE 69418528D1
Authority
DE
Germany
Prior art keywords
optical head
optical
head
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.)
Expired - Fee Related
Application number
DE69418528T
Other languages
English (en)
Other versions
DE69418528T2 (de
Inventor
Won-Jae Hwang
Moon-Gyu Lee
Jong-Kuk Mun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Application granted granted Critical
Publication of DE69418528D1 publication Critical patent/DE69418528D1/de
Publication of DE69418528T2 publication Critical patent/DE69418528T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B7/08—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
    • G11B7/094—Methods and circuits for servo offset compensation
    • 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
    • G11B7/08—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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
DE69418528T 1993-06-11 1994-06-09 Optischer Kopf Expired - Fee Related DE69418528T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930010646A KR0139177B1 (ko) 1993-06-11 1993-06-11 초점에러 및 트랙킹에러를 검출하기 위하여 홀로그램을 사용하는 광헤드

Publications (2)

Publication Number Publication Date
DE69418528D1 true DE69418528D1 (de) 1999-06-24
DE69418528T2 DE69418528T2 (de) 1999-12-23

Family

ID=19357250

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69418528T Expired - Fee Related DE69418528T2 (de) 1993-06-11 1994-06-09 Optischer Kopf

Country Status (5)

Country Link
EP (1) EP0628955B1 (de)
JP (1) JPH0757295A (de)
KR (1) KR0139177B1 (de)
CN (1) CN1044418C (de)
DE (1) DE69418528T2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6292441B1 (en) 1997-04-16 2001-09-18 Matsushita Electric Industrial Co., Ltd. Optical head device, optical information apparatus, and method for detecting focus error signal
JP5187364B2 (ja) * 2010-08-24 2013-04-24 カシオ計算機株式会社 回折光学素子、並びに測距装置及び測距方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62103857A (ja) * 1985-10-31 1987-05-14 Mitsubishi Electric Corp 光ピツクアツプ装置
US4731772A (en) * 1986-05-06 1988-03-15 Lee Wai Hon Optical head using hologram lens for both beam splitting and focus error detection functions
DE3855936T2 (de) * 1987-08-24 1998-01-02 Sharp Kk Optische Abtastvorrichtung
JPH01151022A (ja) * 1987-12-09 1989-06-13 Sharp Corp 光ピックアップ装置
JP2692119B2 (ja) * 1988-03-31 1997-12-17 松下電器産業株式会社 光ピックアップヘッド装置
US5066138A (en) * 1988-06-16 1991-11-19 Mitsubishi Denki Kabushiki Kaisha Optical head apparatus
JPH0258739A (ja) * 1988-08-24 1990-02-27 Matsushita Electric Ind Co Ltd 光ヘッド装置
JPH0677335B2 (ja) * 1988-10-21 1994-09-28 シャープ株式会社 光ピックアップ装置
JPH02121131A (ja) * 1988-10-28 1990-05-09 Olympus Optical Co Ltd 光ピックアップ
JPH0626024B2 (ja) * 1988-12-20 1994-04-06 日本電気株式会社 光ヘッド装置
JP2766348B2 (ja) * 1989-11-02 1998-06-18 オリンパス光学工業株式会社 光学ヘッド
JP2656136B2 (ja) * 1990-05-29 1997-09-24 シャープ株式会社 光ピックアップ装置

Also Published As

Publication number Publication date
EP0628955A1 (de) 1994-12-14
CN1101157A (zh) 1995-04-05
KR950001640A (ko) 1995-01-03
EP0628955B1 (de) 1999-05-19
CN1044418C (zh) 1999-07-28
DE69418528T2 (de) 1999-12-23
KR0139177B1 (ko) 1998-06-01
JPH0757295A (ja) 1995-03-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee