JPS5494007A - Pickup for disc recorder recorded optically with information - Google Patents
Pickup for disc recorder recorded optically with informationInfo
- 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
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.
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)
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)
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 |
-
1978
- 1978-01-05 JP JP2678A patent/JPS5494007A/en active Granted
Patent Citations (4)
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)
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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