DE69318744D1 - Lichtquelleneinheit und damit ausgerüsteter optischer Kopf - Google Patents

Lichtquelleneinheit und damit ausgerüsteter optischer Kopf

Info

Publication number
DE69318744D1
DE69318744D1 DE69318744T DE69318744T DE69318744D1 DE 69318744 D1 DE69318744 D1 DE 69318744D1 DE 69318744 T DE69318744 T DE 69318744T DE 69318744 T DE69318744 T DE 69318744T DE 69318744 D1 DE69318744 D1 DE 69318744D1
Authority
DE
Germany
Prior art keywords
light source
source unit
optical head
equipped 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 - Lifetime
Application number
DE69318744T
Other languages
English (en)
Other versions
DE69318744T2 (de
Inventor
Nobuo Ogata
Hideaki Sato
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE69318744D1 publication Critical patent/DE69318744D1/de
Publication of DE69318744T2 publication Critical patent/DE69318744T2/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
    • G11B7/22—Apparatus or processes for the manufacture of optical heads, e.g. assembly
    • 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
    • G11B7/12—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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
DE69318744T 1992-02-13 1993-02-12 Lichtquelleneinheit und damit ausgerüsteter optischer Kopf Expired - Lifetime DE69318744T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4026589A JP2807589B2 (ja) 1992-02-13 1992-02-13 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

Publications (2)

Publication Number Publication Date
DE69318744D1 true DE69318744D1 (de) 1998-07-02
DE69318744T2 DE69318744T2 (de) 1998-12-17

Family

ID=12197732

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69318744T Expired - Lifetime DE69318744T2 (de) 1992-02-13 1993-02-12 Lichtquelleneinheit und damit ausgerüsteter optischer Kopf

Country Status (6)

Country Link
US (1) US5442616A (de)
EP (1) EP0556062B1 (de)
JP (1) JP2807589B2 (de)
KR (1) KR0148134B1 (de)
CA (1) CA2085661C (de)
DE (1) DE69318744T2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5615200A (en) * 1992-09-10 1997-03-25 Kabushiki Kaisha Toshiba Light beam shaping device to change an anisotropic beam to an isotropic beam for reducing the size of an optical head
US6141487A (en) * 1994-03-14 2000-10-31 Matsushita Electric Industrial Co., Ltd. Data recording/reproducing apparatus and method for high speed play
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)
JPH11213441A (ja) * 1998-01-23 1999-08-06 Rohm Co Ltd 光ピックアップおよびその調整方法
JP2001307376A (ja) 2000-02-17 2001-11-02 Sharp Corp 光記録媒体及びピックアップ装置
JP2002169921A (ja) * 2000-12-01 2002-06-14 Fuji Xerox Co Ltd 買い物支援システム及び施設巡回支援システム
JP3985562B2 (ja) * 2002-02-25 2007-10-03 株式会社日立製作所 光ヘッド及び光ディスク装置
JP4655452B2 (ja) * 2003-03-24 2011-03-23 富士ゼロックス株式会社 情報処理装置
JP4480495B2 (ja) 2004-07-07 2010-06-16 三洋電機株式会社 光ピックアップ装置
US7359577B2 (en) * 2004-07-13 2008-04-15 Yan Wang Differential method for layer-to-layer registration
US20060081761A1 (en) * 2004-10-15 2006-04-20 Matsushita Electric Industrial Co., Ltd. Optical pickup apparatus and optical disk apparatus
JP4722812B2 (ja) * 2006-10-24 2011-07-13 シャープ株式会社 光ピックアップ装置、及び当該光ピックアップ装置を備える光情報記録再生装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59162650A (ja) * 1983-03-07 1984-09-13 Asahi Optical Co Ltd 記録担体からの光学的情報読取装置
JPS63153730A (ja) * 1986-12-18 1988-06-27 Pioneer Electronic Corp 回折格子の調整方法
US5060212A (en) * 1987-08-17 1991-10-22 Ricoh Company, Ltd. Integrated optical pick-up device
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
US5070488A (en) * 1988-06-29 1991-12-03 Atsuko Fukushima Optical integrated circuit and optical apparatus
JP2584000B2 (ja) * 1988-09-17 1997-02-19 日本電気ホームエレクトロニクス株式会社 光ヘッドの組立調整方法及び装置
US5220543A (en) * 1989-02-14 1993-06-15 Victor Company Of Japan, Ltd. Compact optical disc recording/reproducing system
JP2655923B2 (ja) * 1990-01-22 1997-09-24 シャープ株式会社 光ヘッド装置
US5148421A (en) * 1990-04-20 1992-09-15 Matsushita Electric Industrial Co., Ltd. Optical head
JPH0460933A (ja) * 1990-06-26 1992-02-26 Matsushita Electric Ind Co Ltd 光ピックアップヘッド装置
US5285062A (en) * 1992-04-14 1994-02-08 Hoetron, Inc. Laser/detector hybrid with mirror source and diffracted return beam

Also Published As

Publication number Publication date
JP2807589B2 (ja) 1998-10-08
CA2085661A1 (en) 1993-08-14
JPH05225583A (ja) 1993-09-03
CA2085661C (en) 1996-03-19
DE69318744T2 (de) 1998-12-17
EP0556062A1 (de) 1993-08-18
US5442616A (en) 1995-08-15
EP0556062B1 (de) 1998-05-27
KR930018490A (ko) 1993-09-22
KR0148134B1 (ko) 1998-10-15

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