JPS57158834A - Method for optical recording - Google Patents

Method for optical recording

Info

Publication number
JPS57158834A
JPS57158834A JP56045843A JP4584381A JPS57158834A JP S57158834 A JPS57158834 A JP S57158834A JP 56045843 A JP56045843 A JP 56045843A JP 4584381 A JP4584381 A JP 4584381A JP S57158834 A JPS57158834 A JP S57158834A
Authority
JP
Japan
Prior art keywords
plate
light source
laser light
lens
information
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
JP56045843A
Other languages
English (en)
Japanese (ja)
Other versions
JPS634166B2 (enrdf_load_stackoverflow
Inventor
Itsuo Nagata
Daiki Miyamoto
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.)
OOSAKAFU
Osaka Municipal Government
Original Assignee
OOSAKAFU
Osaka Municipal Government
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 OOSAKAFU, Osaka Municipal Government filed Critical OOSAKAFU
Priority to JP56045843A priority Critical patent/JPS57158834A/ja
Publication of JPS57158834A publication Critical patent/JPS57158834A/ja
Publication of JPS634166B2 publication Critical patent/JPS634166B2/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
    • G11B7/125—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
    • G11B7/1275—Two or more lasers having different wavelengths
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • G11B7/00455—Recording involving reflectivity, absorption or colour changes
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • G11B7/0052—Reproducing involving reflectivity, absorption or colour changes
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24314—Metals or metalloids group 15 elements (e.g. Sb, Bi)
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24318—Non-metallic elements
    • G11B2007/2432—Oxygen

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
JP56045843A 1981-03-27 1981-03-27 Method for optical recording Granted JPS57158834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56045843A JPS57158834A (en) 1981-03-27 1981-03-27 Method for optical recording

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56045843A JPS57158834A (en) 1981-03-27 1981-03-27 Method for optical recording

Publications (2)

Publication Number Publication Date
JPS57158834A true JPS57158834A (en) 1982-09-30
JPS634166B2 JPS634166B2 (enrdf_load_stackoverflow) 1988-01-27

Family

ID=12730494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56045843A Granted JPS57158834A (en) 1981-03-27 1981-03-27 Method for optical recording

Country Status (1)

Country Link
JP (1) JPS57158834A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4859492A (en) * 1986-02-24 1989-08-22 Hughes Aircraft Company Process for forming an environmentally stable optical coating thereby
US5130841A (en) * 1988-04-11 1992-07-14 Ford Motor Company Method of making an electrochromic material and new electrochromic material
US5253101A (en) * 1987-12-28 1993-10-12 Ford Motor Company Electrochromic material and method of making an electrochromic material
EP1405890A4 (en) * 2001-05-15 2007-04-04 Eurokera THERMOCHROMIC MATERIAL

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4859492A (en) * 1986-02-24 1989-08-22 Hughes Aircraft Company Process for forming an environmentally stable optical coating thereby
US5253101A (en) * 1987-12-28 1993-10-12 Ford Motor Company Electrochromic material and method of making an electrochromic material
US5130841A (en) * 1988-04-11 1992-07-14 Ford Motor Company Method of making an electrochromic material and new electrochromic material
EP1405890A4 (en) * 2001-05-15 2007-04-04 Eurokera THERMOCHROMIC MATERIAL

Also Published As

Publication number Publication date
JPS634166B2 (enrdf_load_stackoverflow) 1988-01-27

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