JPS59142758A - 光学的読み取り装置 - Google Patents

光学的読み取り装置

Info

Publication number
JPS59142758A
JPS59142758A JP58014864A JP1486483A JPS59142758A JP S59142758 A JPS59142758 A JP S59142758A JP 58014864 A JP58014864 A JP 58014864A JP 1486483 A JP1486483 A JP 1486483A JP S59142758 A JPS59142758 A JP S59142758A
Authority
JP
Japan
Prior art keywords
optical
signal
optical head
beams
light
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
JP58014864A
Other languages
English (en)
Japanese (ja)
Other versions
JPH056741B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
Hiroo Nomura
野村　浩朗
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP58014864A priority Critical patent/JPS59142758A/ja
Publication of JPS59142758A publication Critical patent/JPS59142758A/ja
Publication of JPH056741B2 publication Critical patent/JPH056741B2/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
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
JP58014864A 1983-02-01 1983-02-01 光学的読み取り装置 Granted JPS59142758A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58014864A JPS59142758A (ja) 1983-02-01 1983-02-01 光学的読み取り装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58014864A JPS59142758A (ja) 1983-02-01 1983-02-01 光学的読み取り装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP5315046A Division JP2580987B2 (ja) 1993-12-15 1993-12-15 光学的書き込み読み取り装置

Publications (2)

Publication Number Publication Date
JPS59142758A true JPS59142758A (ja) 1984-08-16
JPH056741B2 JPH056741B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-01-27

Family

ID=11872884

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58014864A Granted JPS59142758A (ja) 1983-02-01 1983-02-01 光学的読み取り装置

Country Status (1)

Country Link
JP (1) JPS59142758A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62106322U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1985-12-19 1987-07-07
JPH076401A (ja) * 1993-12-15 1995-01-10 Seiko Epson Corp 光学的書き込み読み取り装置
EP0789356A1 (en) * 1996-02-06 1997-08-13 Nec Corporation Optical head device responsive to various optical disks
WO2005020221A3 (en) * 2003-08-20 2005-05-26 Koninkl Philips Electronics Nv Optical record carrier

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53112039A (en) * 1977-03-09 1978-09-30 Philips Nv Optical memory for mechanically addressing
JPS5753702A (en) * 1980-09-16 1982-03-30 Nippon Sheet Glass Co Ltd Lens body
JPS57205833A (en) * 1981-06-12 1982-12-17 Sony Corp Optical reproducing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53112039A (en) * 1977-03-09 1978-09-30 Philips Nv Optical memory for mechanically addressing
JPS5753702A (en) * 1980-09-16 1982-03-30 Nippon Sheet Glass Co Ltd Lens body
JPS57205833A (en) * 1981-06-12 1982-12-17 Sony Corp Optical reproducing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62106322U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1985-12-19 1987-07-07
JPH076401A (ja) * 1993-12-15 1995-01-10 Seiko Epson Corp 光学的書き込み読み取り装置
EP0789356A1 (en) * 1996-02-06 1997-08-13 Nec Corporation Optical head device responsive to various optical disks
US5892749A (en) * 1996-02-06 1999-04-06 Nec Corporation Optical head device for reading two optical disks
WO2005020221A3 (en) * 2003-08-20 2005-05-26 Koninkl Philips Electronics Nv Optical record carrier

Also Published As

Publication number Publication date
JPH056741B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-01-27

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