JPS5494007A - Pickup for disc recorder recorded optically with information - Google Patents

Pickup for disc recorder recorded optically with information

Info

Publication number
JPS5494007A
JPS5494007A JP2678A JP2678A JPS5494007A JP S5494007 A JPS5494007 A JP S5494007A JP 2678 A JP2678 A JP 2678A JP 2678 A JP2678 A JP 2678A JP S5494007 A JPS5494007 A JP S5494007A
Authority
JP
Japan
Prior art keywords
fed
diffracted
tracking
light
polarized
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
JP2678A
Other languages
Japanese (ja)
Other versions
JPS6118261B2 (en
Inventor
Shunpei Tanaka
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.)
Olympus Corp
Original Assignee
Olympus Optical 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11462864&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS5494007(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP2678A priority Critical patent/JPS5494007A/en
Publication of JPS5494007A publication Critical patent/JPS5494007A/en
Publication of JPS6118261B2 publication Critical patent/JPS6118261B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)
  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To effect the focusing and tracking adjustment thereby to simplify the construction and reduce the size of a drive mechanism and to reduce the power consumption. CONSTITUTION:A laser beam from its light source 1 is divided by a diffraction grating 8 into diffracted lights of 0, 1 and -1 orders and then is polarized by a polarizing prism 2' and a lambda/4 plate 9. The lights thus polarized are condensed as reading and tracking spots upon a video disc 6' through a relay lens 3' and an objective lens 5'. The light reflected on the disc surface 6' is reflected by the prism 2' and fed to light receivers 7' and 7'' so that the diffracted components of 1 and -1 orders are fed to a differential amplifier 10 by the receiver 7' whereas the diffracted component of 0 order is fed to a differential amplifier 11 through four light receiving areas by the other receiver 7''. Thus, the lens 3' is moved up and forth and to the right and left in response to the focusing and tracking signals of the outputs of the respective amplifiers.
JP2678A 1978-01-05 1978-01-05 Pickup for disc recorder recorded optically with information Granted JPS5494007A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2678A JPS5494007A (en) 1978-01-05 1978-01-05 Pickup for disc recorder recorded optically with information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2678A JPS5494007A (en) 1978-01-05 1978-01-05 Pickup for disc recorder recorded optically with information

Related Child Applications (6)

Application Number Title Priority Date Filing Date
JP8239484A Division JPS6022743A (en) 1984-04-24 1984-04-24 Pickup for disk reproducer containing information recorded optically
JP8239584A Division JPS6022744A (en) 1984-04-24 1984-04-24 Pickup device
JP60185020A Division JPH0612576B2 (en) 1985-08-24 1985-08-24 Pickup device
JP18502185A Division JPS6182338A (en) 1985-08-24 1985-08-24 Pickup device
JP18502385A Division JPS6182340A (en) 1985-08-24 1985-08-24 Pickup device
JP18502285A Division JPS6182339A (en) 1985-08-24 1985-08-24 Pickup device

Publications (2)

Publication Number Publication Date
JPS5494007A true JPS5494007A (en) 1979-07-25
JPS6118261B2 JPS6118261B2 (en) 1986-05-12

Family

ID=11462864

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2678A Granted JPS5494007A (en) 1978-01-05 1978-01-05 Pickup for disc recorder recorded optically with information

Country Status (1)

Country Link
JP (1) JPS5494007A (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56119944A (en) * 1980-02-27 1981-09-19 Sony Corp Disc player
JPS56127939A (en) * 1980-02-11 1981-10-07 Yokogawa Hewlett Packard Ltd Focus controller
JPS5774836A (en) * 1980-10-24 1982-05-11 Sony Corp Pickup device
JPS57208641A (en) * 1981-06-19 1982-12-21 Hitachi Ltd Multishaft driving device
JPS583142A (en) * 1981-06-30 1983-01-08 Sharp Corp Optical information processor
JPS5819742A (en) * 1981-07-24 1983-02-04 Pioneer Video Corp Optical system driver for recorded information reader
JPS5820865U (en) * 1981-08-03 1983-02-08 ゼネラル・エアコン株式会社 air conditioner
JPS5898850A (en) * 1981-12-08 1983-06-11 Sanyo Electric Co Ltd Object lens driving device
JPS5894138U (en) * 1981-12-19 1983-06-25 パイオニア株式会社 Optical system drive device in optical information recording and reproducing device
JPS58133640A (en) * 1982-01-30 1983-08-09 Sony Corp Two-dimensional drive device
JPS58171731A (en) * 1983-02-21 1983-10-08 Mitsubishi Electric Corp Disc reproducing device
JPS5910129U (en) * 1982-07-08 1984-01-23 パイオニア株式会社 optical pick up
JPS60173727A (en) * 1985-01-25 1985-09-07 Hitachi Ltd Optical scanner
JPS6325835A (en) * 1986-07-17 1988-02-03 Sharp Corp Objective lens driving device
JPS641132A (en) * 1988-02-12 1989-01-05 Sony Corp Objective lens driver
EP0346479A1 (en) * 1987-10-28 1989-12-20 Oki Electric Industry Company, Limited Optical head
JPH03141042A (en) * 1990-09-18 1991-06-17 Sony Corp Optical disk player
JPH07201053A (en) * 1994-12-26 1995-08-04 Hitachi Ltd Optical scanner
US6430113B1 (en) 1999-06-21 2002-08-06 Ashai Kogaku Kogyo Kabushiki Kaisha Magnetic head up/down mechanism for magneto-optical disc drive

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51114102A (en) * 1975-04-01 1976-10-07 Victor Co Of Japan Ltd Signal reading and control device for disc player
JPS52138903A (en) * 1976-05-12 1977-11-19 Philips Nv Optical scanner
JPS5424002A (en) * 1977-07-25 1979-02-23 Victor Co Of Japan Ltd Reproducer of optical information recording medium discs
JPS57210456A (en) * 1981-06-22 1982-12-24 Sony Corp Objective lens device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51114102A (en) * 1975-04-01 1976-10-07 Victor Co Of Japan Ltd Signal reading and control device for disc player
JPS52138903A (en) * 1976-05-12 1977-11-19 Philips Nv Optical scanner
JPS5424002A (en) * 1977-07-25 1979-02-23 Victor Co Of Japan Ltd Reproducer of optical information recording medium discs
JPS57210456A (en) * 1981-06-22 1982-12-24 Sony Corp Objective lens device

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56127939A (en) * 1980-02-11 1981-10-07 Yokogawa Hewlett Packard Ltd Focus controller
JPS56119944A (en) * 1980-02-27 1981-09-19 Sony Corp Disc player
JPS5774836A (en) * 1980-10-24 1982-05-11 Sony Corp Pickup device
JPS57208641A (en) * 1981-06-19 1982-12-21 Hitachi Ltd Multishaft driving device
JPS583142A (en) * 1981-06-30 1983-01-08 Sharp Corp Optical information processor
JPS6223377B2 (en) * 1981-06-30 1987-05-22 Sharp Kk
JPS5819742A (en) * 1981-07-24 1983-02-04 Pioneer Video Corp Optical system driver for recorded information reader
JPH0416861B2 (en) * 1981-07-24 1992-03-25 Paionia Bideo Kk
JPS5820865U (en) * 1981-08-03 1983-02-08 ゼネラル・エアコン株式会社 air conditioner
JPS5898850A (en) * 1981-12-08 1983-06-11 Sanyo Electric Co Ltd Object lens driving device
JPS5894138U (en) * 1981-12-19 1983-06-25 パイオニア株式会社 Optical system drive device in optical information recording and reproducing device
JPS58133640A (en) * 1982-01-30 1983-08-09 Sony Corp Two-dimensional drive device
JPH0424769B2 (en) * 1982-01-30 1992-04-28 Sony Corp
JPS5910129U (en) * 1982-07-08 1984-01-23 パイオニア株式会社 optical pick up
JPS58171731A (en) * 1983-02-21 1983-10-08 Mitsubishi Electric Corp Disc reproducing device
JPS6256580B2 (en) * 1983-02-21 1987-11-26 Mitsubishi Electric Corp
JPS60173727A (en) * 1985-01-25 1985-09-07 Hitachi Ltd Optical scanner
JPS6325835A (en) * 1986-07-17 1988-02-03 Sharp Corp Objective lens driving device
EP0346479A1 (en) * 1987-10-28 1989-12-20 Oki Electric Industry Company, Limited Optical head
EP0346479B1 (en) * 1987-10-28 1994-01-05 Oki Electric Industry Company, Limited Optical head
JPS641132A (en) * 1988-02-12 1989-01-05 Sony Corp Objective lens driver
JPH03141042A (en) * 1990-09-18 1991-06-17 Sony Corp Optical disk player
JPH0524570B2 (en) * 1990-09-18 1993-04-08 Sony Corp
JPH07201053A (en) * 1994-12-26 1995-08-04 Hitachi Ltd Optical scanner
JP2546541B2 (en) * 1994-12-26 1996-10-23 株式会社日立製作所 Optical scanning device
US6430113B1 (en) 1999-06-21 2002-08-06 Ashai Kogaku Kogyo Kabushiki Kaisha Magnetic head up/down mechanism for magneto-optical disc drive

Also Published As

Publication number Publication date
JPS6118261B2 (en) 1986-05-12

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