JPH0253853B2 - - Google Patents

Info

Publication number
JPH0253853B2
JPH0253853B2 JP56090467A JP9046781A JPH0253853B2 JP H0253853 B2 JPH0253853 B2 JP H0253853B2 JP 56090467 A JP56090467 A JP 56090467A JP 9046781 A JP9046781 A JP 9046781A JP H0253853 B2 JPH0253853 B2 JP H0253853B2
Authority
JP
Japan
Prior art keywords
beams
light source
laser light
lens
diffraction grating
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
JP56090467A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57205833A (en
Inventor
Shigeo Kubota
Kenji Shintani
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP56090467A priority Critical patent/JPS57205833A/ja
Publication of JPS57205833A publication Critical patent/JPS57205833A/ja
Publication of JPH0253853B2 publication Critical patent/JPH0253853B2/ja
Granted 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP56090467A 1981-06-12 1981-06-12 Optical reproducing device Granted JPS57205833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56090467A JPS57205833A (en) 1981-06-12 1981-06-12 Optical reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56090467A JPS57205833A (en) 1981-06-12 1981-06-12 Optical reproducing device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP1633686A Division JPS61216132A (ja) 1986-01-28 1986-01-28 光学式再生装置

Publications (2)

Publication Number Publication Date
JPS57205833A JPS57205833A (en) 1982-12-17
JPH0253853B2 true JPH0253853B2 (enrdf_load_stackoverflow) 1990-11-20

Family

ID=13999399

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56090467A Granted JPS57205833A (en) 1981-06-12 1981-06-12 Optical reproducing device

Country Status (1)

Country Link
JP (1) JPS57205833A (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5958637A (ja) * 1982-09-28 1984-04-04 Sony Corp 光学式再生装置
JPS59142758A (ja) * 1983-02-01 1984-08-16 Seiko Epson Corp 光学的読み取り装置
JPS6092680A (ja) * 1983-10-26 1985-05-24 Seiko Epson Corp 半導体レ−ザ
JPS6161240A (ja) * 1984-09-03 1986-03-29 Hitachi Ltd 光学式信号再生装置
JP2966612B2 (ja) * 1991-12-26 1999-10-25 シャープ株式会社 情報再生装置
JPH0846294A (ja) * 1995-09-08 1996-02-16 Seiko Epson Corp 半導体レーザ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5371808A (en) * 1976-12-08 1978-06-26 Toshiba Corp Optical information reader

Also Published As

Publication number Publication date
JPS57205833A (en) 1982-12-17

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