JP3163939B2 - 光ピックアップ - Google Patents

光ピックアップ

Info

Publication number
JP3163939B2
JP3163939B2 JP09069995A JP9069995A JP3163939B2 JP 3163939 B2 JP3163939 B2 JP 3163939B2 JP 09069995 A JP09069995 A JP 09069995A JP 9069995 A JP9069995 A JP 9069995A JP 3163939 B2 JP3163939 B2 JP 3163939B2
Authority
JP
Japan
Prior art keywords
laser unit
optical axis
hologram laser
sub
disk
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
JP09069995A
Other languages
English (en)
Japanese (ja)
Other versions
JPH08287509A (ja
Inventor
道子 村田
裕行 中村
由起 長岡
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
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
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 Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP09069995A priority Critical patent/JP3163939B2/ja
Priority to TW085104220A priority patent/TW311221B/zh
Priority to SG1996009140A priority patent/SG71677A1/en
Priority to KR1019960011377A priority patent/KR100297527B1/ko
Priority to CN96106129A priority patent/CN1087859C/zh
Publication of JPH08287509A publication Critical patent/JPH08287509A/ja
Application granted granted Critical
Publication of JP3163939B2 publication Critical patent/JP3163939B2/ja
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
    • G11B7/12—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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/127—Lasers; Multiple laser arrays
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
JP09069995A 1995-04-17 1995-04-17 光ピックアップ Expired - Fee Related JP3163939B2 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP09069995A JP3163939B2 (ja) 1995-04-17 1995-04-17 光ピックアップ
TW085104220A TW311221B (en:Method) 1995-04-17 1996-04-10
SG1996009140A SG71677A1 (en) 1995-04-17 1996-04-15 Optical pickup
KR1019960011377A KR100297527B1 (ko) 1995-04-17 1996-04-16 광픽업
CN96106129A CN1087859C (zh) 1995-04-17 1996-04-17 光拾取装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP09069995A JP3163939B2 (ja) 1995-04-17 1995-04-17 光ピックアップ

Publications (2)

Publication Number Publication Date
JPH08287509A JPH08287509A (ja) 1996-11-01
JP3163939B2 true JP3163939B2 (ja) 2001-05-08

Family

ID=14005782

Family Applications (1)

Application Number Title Priority Date Filing Date
JP09069995A Expired - Fee Related JP3163939B2 (ja) 1995-04-17 1995-04-17 光ピックアップ

Country Status (5)

Country Link
JP (1) JP3163939B2 (en:Method)
KR (1) KR100297527B1 (en:Method)
CN (1) CN1087859C (en:Method)
SG (1) SG71677A1 (en:Method)
TW (1) TW311221B (en:Method)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0421930A (ja) * 1990-05-16 1992-01-24 Ricoh Co Ltd 光ピックアップ装置
JPH076442A (ja) * 1993-04-23 1995-01-10 Sony Corp 光磁気検出用光学ヘッド

Also Published As

Publication number Publication date
CN1140300A (zh) 1997-01-15
KR100297527B1 (ko) 2001-10-24
SG71677A1 (en) 2000-04-18
KR960038783A (ko) 1996-11-21
TW311221B (en:Method) 1997-07-21
CN1087859C (zh) 2002-07-17
JPH08287509A (ja) 1996-11-01

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