JPS5542368A - Pickup controller - Google Patents
Pickup controllerInfo
- Publication number
- JPS5542368A JPS5542368A JP11608778A JP11608778A JPS5542368A JP S5542368 A JPS5542368 A JP S5542368A JP 11608778 A JP11608778 A JP 11608778A JP 11608778 A JP11608778 A JP 11608778A JP S5542368 A JPS5542368 A JP S5542368A
- Authority
- JP
- Japan
- Prior art keywords
- unit
- track
- optical system
- arrow
- coil
- 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.)
- Pending
Links
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: To attain reduction of the number of components and miniaturization of a unit by controlling the whole optical system by providing mechanisms for focusing control and track control to one unit.
CONSTITUTION: Laser beam 14 emitted from semiconductor 12 is focused by condenser lens 13 to form a photo spot on disk 7 and photo detector 22 detect the quantity of reflected light of this. In body tube 23 where this optical system is contained, coils 17 and 18 are arranged in magnetic flux provided by magnets 15 and 16 and leaf springs 19, 20 and 21 with grooves are provided vertically and horizontally. A current varying with a relative position with disk 7 flows through coil 18 and body tube 23 moves as shown by arrow C. On the other hand, a current corresponding to a shift from a track flows through coil 17 and the whole optical system moves as shown by arrow d following the track. In this way, mechanisms for focusing control and track control are provided to one unit, so that the unit can be miniaturized.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11608778A JPS5542368A (en) | 1978-09-19 | 1978-09-19 | Pickup controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11608778A JPS5542368A (en) | 1978-09-19 | 1978-09-19 | Pickup controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5542368A true JPS5542368A (en) | 1980-03-25 |
Family
ID=14678380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11608778A Pending JPS5542368A (en) | 1978-09-19 | 1978-09-19 | Pickup controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5542368A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4342935A (en) * | 1980-04-10 | 1982-08-03 | Discovision Associates | Binary piezoelectric drive for lens focusing system |
US4386823A (en) * | 1980-06-16 | 1983-06-07 | Olympus Optical Co. Ltd. | Objective lens driving device |
US4394755A (en) * | 1980-07-31 | 1983-07-19 | U.S. Philips Corporation | Bearing arrangement for an objective of an optical apparatus for writing and/or reading recording tracks by means of a radiation beam |
EP0122816A2 (en) * | 1983-04-18 | 1984-10-24 | Sharp Kabushiki Kaisha | Optical focus position control in an optical memory system |
JPS6153549A (en) * | 1984-08-23 | 1986-03-17 | Chino Works Ltd | Optical measuring apparatus |
-
1978
- 1978-09-19 JP JP11608778A patent/JPS5542368A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4342935A (en) * | 1980-04-10 | 1982-08-03 | Discovision Associates | Binary piezoelectric drive for lens focusing system |
US4386823A (en) * | 1980-06-16 | 1983-06-07 | Olympus Optical Co. Ltd. | Objective lens driving device |
US4394755A (en) * | 1980-07-31 | 1983-07-19 | U.S. Philips Corporation | Bearing arrangement for an objective of an optical apparatus for writing and/or reading recording tracks by means of a radiation beam |
EP0122816A2 (en) * | 1983-04-18 | 1984-10-24 | Sharp Kabushiki Kaisha | Optical focus position control in an optical memory system |
JPS6153549A (en) * | 1984-08-23 | 1986-03-17 | Chino Works Ltd | Optical measuring apparatus |
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