DE69215951D1 - Optischer Wiedergabekopf - Google Patents

Optischer Wiedergabekopf

Info

Publication number
DE69215951D1
DE69215951D1 DE69215951T DE69215951T DE69215951D1 DE 69215951 D1 DE69215951 D1 DE 69215951D1 DE 69215951 T DE69215951 T DE 69215951T DE 69215951 T DE69215951 T DE 69215951T DE 69215951 D1 DE69215951 D1 DE 69215951D1
Authority
DE
Germany
Prior art keywords
playback head
optical playback
optical
head
playback
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
DE69215951T
Other languages
English (en)
Other versions
DE69215951T2 (de
Inventor
Yoshiaki Komma
Seiji Nishino
Yoshikazu Hori
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 Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of DE69215951D1 publication Critical patent/DE69215951D1/de
Application granted granted Critical
Publication of DE69215951T2 publication Critical patent/DE69215951T2/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
    • G11B7/1362—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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
DE69215951T 1991-04-17 1992-04-16 Optischer Wiedergabekopf Expired - Lifetime DE69215951T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3085089A JPH04318333A (ja) 1991-04-17 1991-04-17 光ヘッド装置

Publications (2)

Publication Number Publication Date
DE69215951D1 true DE69215951D1 (de) 1997-01-30
DE69215951T2 DE69215951T2 (de) 1997-06-26

Family

ID=13848878

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69215951T Expired - Lifetime DE69215951T2 (de) 1991-04-17 1992-04-16 Optischer Wiedergabekopf

Country Status (5)

Country Link
US (1) US5301182A (de)
EP (1) EP0509526B1 (de)
JP (1) JPH04318333A (de)
KR (2) KR920020427A (de)
DE (1) DE69215951T2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410468A (en) * 1992-06-26 1995-04-25 Matsushita Electric Industrial Co., Ltd. Optical pick-up apparatus
EP0790606B1 (de) * 1992-08-07 2001-10-24 Matsushita Electric Industrial Co., Ltd. Optische Speichervorrichtung
JP2532818B2 (ja) * 1993-02-01 1996-09-11 松下電器産業株式会社 対物レンズおよび光ヘッド装置
EP0612068B1 (de) * 1993-02-16 2000-05-03 Nec Corporation Optischer Abtasthopf und doppelbrechender Beugungsgitterpolarisator sowie Hologrammpolarisator dafür.
EP0627733B1 (de) * 1993-06-02 2001-02-21 Matsushita Electric Industrial Co., Ltd. Optische Kopfvorrichtung und optisches Informationsgerät
JPH07182687A (ja) * 1993-12-24 1995-07-21 Sharp Corp 光ピックアップ
KR980004433A (ko) * 1996-06-12 1998-03-30 구자홍 박형 광픽업 장치
CN1181537A (zh) * 1996-09-30 1998-05-13 大宇电子株式会社 袖珍光学拾取***
US5939710A (en) * 1996-09-30 1999-08-17 Daewoo Electronics Co., Ltd. Optical pickup system incorporating therein a beam splitter having a phase layer
KR19980029872A (ko) * 1996-10-28 1998-07-25 배순훈 광 픽-업장치
KR100403597B1 (ko) * 2001-08-30 2003-10-30 삼성전자주식회사 홀로그램이 형성된 빔스프리터를 구비하는 광픽업장치 및이를 이용한 광축보정방법
JP3980602B2 (ja) * 2005-03-02 2007-09-26 シャープ株式会社 収差検出装置およびそれを備えた光ピックアップ装置
JP2008130128A (ja) * 2006-11-17 2008-06-05 Funai Electric Co Ltd 光ピックアップ装置
JP2008140484A (ja) * 2006-12-04 2008-06-19 Funai Electric Co Ltd 光ピックアップ装置
JP4353273B2 (ja) * 2007-05-15 2009-10-28 ソニー株式会社 光照射方法、光記録媒体

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911230A (en) * 1970-05-23 1975-10-07 Seiscom Delta Inc Holographic reproduction of sound
NL7907216A (nl) * 1979-09-28 1981-03-31 Philips Nv Optisch fokusfout-detektiestelsel.
KR900008380B1 (ko) * 1986-07-01 1990-11-17 미쓰비시덴기 가부시기 가이샤 광학식 헤드장치
JPH0752522B2 (ja) * 1986-10-21 1995-06-05 三菱電機株式会社 光学ヘッド装置
JPS63191328A (ja) * 1987-02-04 1988-08-08 Canon Inc 光ヘツド装置
EP0311340B1 (de) * 1987-10-05 1993-08-04 Matsushita Electric Industrial Co., Ltd. Optische Lesekopf
DE68909663T2 (de) * 1988-04-26 1994-04-07 Philips Nv Anordnung zum optischen Abtasten eines magneto-optischen Aufzeichnungsträgers.
JPH02162541A (ja) * 1988-12-16 1990-06-22 Hitachi Ltd 光学式信号再生装置及びそれに用いる光学部品
JPH03130939A (ja) * 1989-07-25 1991-06-04 Olympus Optical Co Ltd 焦点検出装置
US5101389A (en) * 1989-08-04 1992-03-31 Ricoh Company, Ltd. Optical information recording/reproducing apparatus
JPH03125340A (ja) * 1989-10-09 1991-05-28 Olympus Optical Co Ltd 光学ヘッド
JP3109877B2 (ja) * 1991-11-18 2000-11-20 パイオニア株式会社 光学式情報再生装置

Also Published As

Publication number Publication date
JPH04318333A (ja) 1992-11-09
KR950014835B1 (ko) 1995-12-15
KR920020427A (ko) 1992-11-21
DE69215951T2 (de) 1997-06-26
EP0509526A1 (de) 1992-10-21
EP0509526B1 (de) 1996-12-18
US5301182A (en) 1994-04-05

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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: PANASONIC CORP., KADOMA, OSAKA, JP

R071 Expiry of right

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