DE69319973D1 - Diffraktionselement und optische Abtastkopfanordnung - Google Patents

Diffraktionselement und optische Abtastkopfanordnung

Info

Publication number
DE69319973D1
DE69319973D1 DE69319973T DE69319973T DE69319973D1 DE 69319973 D1 DE69319973 D1 DE 69319973D1 DE 69319973 T DE69319973 T DE 69319973T DE 69319973 T DE69319973 T DE 69319973T DE 69319973 D1 DE69319973 D1 DE 69319973D1
Authority
DE
Germany
Prior art keywords
diffraction element
readhead arrangement
optical readhead
optical
arrangement
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 - Lifetime
Application number
DE69319973T
Other languages
English (en)
Other versions
DE69319973T2 (de
Inventor
Akira Ueno
Hideyuki Nakanishi
Hideo Nagai
Akio Yoshikawa
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.)
Panasonic Corp
Original Assignee
Matsushita Electronics 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 Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
Application granted granted Critical
Publication of DE69319973D1 publication Critical patent/DE69319973D1/de
Publication of DE69319973T2 publication Critical patent/DE69319973T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B7/08—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
    • G11B7/0901—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 for track following only
    • G11B7/0903—Multi-beam tracking systems

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Optical Recording Or Reproduction (AREA)
DE69319973T 1992-07-27 1993-01-29 Diffraktionselement und optische Abtastkopfanordnung Expired - Lifetime DE69319973T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19941892A JP3260426B2 (ja) 1992-07-27 1992-07-27 光学式ピックアップ装置

Publications (2)

Publication Number Publication Date
DE69319973D1 true DE69319973D1 (de) 1998-09-03
DE69319973T2 DE69319973T2 (de) 1998-12-10

Family

ID=16407478

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69319973T Expired - Lifetime DE69319973T2 (de) 1992-07-27 1993-01-29 Diffraktionselement und optische Abtastkopfanordnung

Country Status (4)

Country Link
US (1) US5481524A (de)
EP (1) EP0580936B1 (de)
JP (1) JP3260426B2 (de)
DE (1) DE69319973T2 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5517479A (en) * 1993-03-26 1996-05-14 Matsushita Electronics Corporation Optical head including a semiconductor laser having a non-scatter incident area
US6072607A (en) * 1993-10-15 2000-06-06 Sanyo Electric Co., Ltd. Optical pickup device
JP3541416B2 (ja) * 1994-03-08 2004-07-14 ソニー株式会社 光学装置
KR100373801B1 (ko) * 1994-07-29 2003-05-09 산요 덴키 가부시키가이샤 반도체레이저장치및이를이용한광픽업장치
KR970703580A (ko) * 1995-03-29 1997-07-03 제이.지.에이. 롤페스 방사원, 검출기 및 그레이팅을 포함하는 광학유닛과, 광학유닛을 포함하는 스캐닝 장치(Optical unit comprising a radiation source, a detector and a grating, and scanning device including the optical unit)
JPH10172170A (ja) * 1996-10-09 1998-06-26 Sanyo Electric Co Ltd 光ピックアップ装置およびその製造方法
KR19980030363A (ko) * 1996-10-29 1998-07-25 김광호 광 픽업장치
KR100230264B1 (ko) * 1996-12-06 1999-11-15 윤종용 광픽업장치
KR100375514B1 (ko) * 1997-10-20 2003-11-28 삼성전기주식회사 광픽업장치
JP4071141B2 (ja) * 2003-03-31 2008-04-02 シャープ株式会社 半導体レーザ装置および光ピックアップ装置
JP2008140507A (ja) * 2006-12-04 2008-06-19 Sharp Corp ホログラム素子、その製造方法、ならびにそれを用いたホログラムレーザおよび光ピックアップ

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4907847A (en) * 1987-09-28 1990-03-13 Nec Home Electronics Ltd. Optical pickup and hologram therefor
JPH0642288B2 (ja) * 1988-03-17 1994-06-01 シャープ株式会社 光学式ピックアップ装置
JP3155287B2 (ja) * 1990-05-30 2001-04-09 株式会社リコー 光情報記録再生装置
US5136152A (en) * 1990-12-19 1992-08-04 Hoetron, Inc. Hybrid optical pickup with integrated power emission and reading photodetectors

Also Published As

Publication number Publication date
EP0580936B1 (de) 1998-07-29
JP3260426B2 (ja) 2002-02-25
DE69319973T2 (de) 1998-12-10
JPH0644602A (ja) 1994-02-18
EP0580936A1 (de) 1994-02-02
US5481524A (en) 1996-01-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., KADOMA,

8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP