TW311221B - - Google Patents

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Publication number
TW311221B
TW311221B TW085104220A TW85104220A TW311221B TW 311221 B TW311221 B TW 311221B TW 085104220 A TW085104220 A TW 085104220A TW 85104220 A TW85104220 A TW 85104220A TW 311221 B TW311221 B TW 311221B
Authority
TW
Taiwan
Prior art keywords
laser device
optical
holographic laser
disk
mirror
Prior art date
Application number
TW085104220A
Other languages
English (en)
Chinese (zh)
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
Application granted granted Critical
Publication of TW311221B publication Critical patent/TW311221B/zh

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)
TW085104220A 1995-04-17 1996-04-10 TW311221B (en:Method)

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 (1)

Publication Number Publication Date
TW311221B true TW311221B (en:Method) 1997-07-21

Family

ID=14005782

Family Applications (1)

Application Number Title Priority Date Filing Date
TW085104220A TW311221B (en:Method) 1995-04-17 1996-04-10

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
JP3163939B2 (ja) 2001-05-08
CN1087859C (zh) 2002-07-17
JPH08287509A (ja) 1996-11-01

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