JPS58196633A - ダブル・ビ−ム・光学ヘツド - Google Patents

ダブル・ビ−ム・光学ヘツド

Info

Publication number
JPS58196633A
JPS58196633A JP57079377A JP7937782A JPS58196633A JP S58196633 A JPS58196633 A JP S58196633A JP 57079377 A JP57079377 A JP 57079377A JP 7937782 A JP7937782 A JP 7937782A JP S58196633 A JPS58196633 A JP S58196633A
Authority
JP
Japan
Prior art keywords
beams
recording
optical
reproducing
medium
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.)
Granted
Application number
JP57079377A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0512772B2 (es
Inventor
Masahiko Fujiwara
雅彦 藤原
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP57079377A priority Critical patent/JPS58196633A/ja
Publication of JPS58196633A publication Critical patent/JPS58196633A/ja
Publication of JPH0512772B2 publication Critical patent/JPH0512772B2/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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
JP57079377A 1982-05-12 1982-05-12 ダブル・ビ−ム・光学ヘツド Granted JPS58196633A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57079377A JPS58196633A (ja) 1982-05-12 1982-05-12 ダブル・ビ−ム・光学ヘツド

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57079377A JPS58196633A (ja) 1982-05-12 1982-05-12 ダブル・ビ−ム・光学ヘツド

Publications (2)

Publication Number Publication Date
JPS58196633A true JPS58196633A (ja) 1983-11-16
JPH0512772B2 JPH0512772B2 (es) 1993-02-18

Family

ID=13688175

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57079377A Granted JPS58196633A (ja) 1982-05-12 1982-05-12 ダブル・ビ−ム・光学ヘツド

Country Status (1)

Country Link
JP (1) JPS58196633A (es)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0159785A2 (en) * 1984-03-07 1985-10-30 Kabushiki Kaisha Toshiba Optical recording & reproducing apparatus
US4980061A (en) * 1985-10-16 1990-12-25 E. I. Du Pont De Nemours And Company Coating process for composite reverse osmosis membranes
JPH06111329A (ja) * 1992-08-24 1994-04-22 Internatl Business Mach Corp <Ibm> 光学装置のレーザー電力制御システム
US11684155B2 (en) 2017-01-27 2023-06-27 143046 Canada Inc. Pivotable overhead storage unit
US11723457B2 (en) 2017-01-27 2023-08-15 143046 Canada Inc. Overhead storage unit
US11864648B2 (en) 2019-10-04 2024-01-09 143046 Canada Inc. Overhead storage unit with pivoting storage containers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5580832A (en) * 1978-12-15 1980-06-18 Oki Electric Ind Co Ltd Wavelength multiple record/reproduction system
JPS56134774U (es) * 1980-03-11 1981-10-13
JPS56163531A (en) * 1980-05-16 1981-12-16 Nippon Telegr & Teleph Corp <Ntt> Optical information recorder and reproducer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5580832A (en) * 1978-12-15 1980-06-18 Oki Electric Ind Co Ltd Wavelength multiple record/reproduction system
JPS56134774U (es) * 1980-03-11 1981-10-13
JPS56163531A (en) * 1980-05-16 1981-12-16 Nippon Telegr & Teleph Corp <Ntt> Optical information recorder and reproducer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0159785A2 (en) * 1984-03-07 1985-10-30 Kabushiki Kaisha Toshiba Optical recording & reproducing apparatus
US4980061A (en) * 1985-10-16 1990-12-25 E. I. Du Pont De Nemours And Company Coating process for composite reverse osmosis membranes
JPH06111329A (ja) * 1992-08-24 1994-04-22 Internatl Business Mach Corp <Ibm> 光学装置のレーザー電力制御システム
US11684155B2 (en) 2017-01-27 2023-06-27 143046 Canada Inc. Pivotable overhead storage unit
US11723457B2 (en) 2017-01-27 2023-08-15 143046 Canada Inc. Overhead storage unit
US11864648B2 (en) 2019-10-04 2024-01-09 143046 Canada Inc. Overhead storage unit with pivoting storage containers

Also Published As

Publication number Publication date
JPH0512772B2 (es) 1993-02-18

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