JPS5727442A - Objective lens driving device - Google Patents
Objective lens driving deviceInfo
- Publication number
- JPS5727442A JPS5727442A JP10175680A JP10175680A JPS5727442A JP S5727442 A JPS5727442 A JP S5727442A JP 10175680 A JP10175680 A JP 10175680A JP 10175680 A JP10175680 A JP 10175680A JP S5727442 A JPS5727442 A JP S5727442A
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- time base
- driving device
- lens driving
- 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
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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/081—Disposition or mounting of heads or light sources relatively to record carriers for time base error correction by moving the light beam
-
- 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
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0925—Electromechanical actuators for lens positioning
- G11B7/0929—Electromechanical actuators for lens positioning for tracking only
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To miniaturize an objective lens driving device, by applying the magnetic field to a magnetic material unified with an objective lens from two directions orthogonal to each other and thus correcting both a tracking error and a time base error. CONSTITUTION:An objective lens 11 is held by a holding frame 12 of a nonmagnetic material, and a magnetic member 13 is fixed to the frame 12. The both ends of the member 13 are set opposedly to the N and S poles of an L-shaped permanent magnet 14 respectively. Coils 15 and 16 are wound round both ends 14a and 14b of the magnet 14. When the current is flowed as shown in the diagram, the member 13 receives the force shown by arrows (y) and (x). For instance, a tracking error signal is supplied to the coil 15, and a time base error signal is supplied to the coil 16 to correct the tracking and time base errors respectively.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10175680A JPS5727442A (en) | 1980-07-23 | 1980-07-23 | Objective lens driving device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10175680A JPS5727442A (en) | 1980-07-23 | 1980-07-23 | Objective lens driving device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5727442A true JPS5727442A (en) | 1982-02-13 |
Family
ID=14309069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10175680A Pending JPS5727442A (en) | 1980-07-23 | 1980-07-23 | Objective lens driving device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5727442A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59135635A (en) * | 1983-01-21 | 1984-08-03 | Matsushita Electric Ind Co Ltd | Optical pickup |
JPS59135636A (en) * | 1983-01-21 | 1984-08-03 | Matsushita Electric Ind Co Ltd | Optical pickup |
JPS59180836A (en) * | 1983-03-30 | 1984-10-15 | Mitsubishi Electric Corp | 3-dimensional control driver |
JPS59227041A (en) * | 1983-06-06 | 1984-12-20 | Mitsubishi Electric Corp | Three-dimensional control driving device of optical disk reproduing device |
JPS6145724U (en) * | 1985-07-09 | 1986-03-26 | パイオニア株式会社 | Pickup device for optical information reading device |
-
1980
- 1980-07-23 JP JP10175680A patent/JPS5727442A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59135635A (en) * | 1983-01-21 | 1984-08-03 | Matsushita Electric Ind Co Ltd | Optical pickup |
JPS59135636A (en) * | 1983-01-21 | 1984-08-03 | Matsushita Electric Ind Co Ltd | Optical pickup |
JPH0452532B2 (en) * | 1983-01-21 | 1992-08-24 | Matsushita Electric Ind Co Ltd | |
JPS59180836A (en) * | 1983-03-30 | 1984-10-15 | Mitsubishi Electric Corp | 3-dimensional control driver |
JPH0519208B2 (en) * | 1983-03-30 | 1993-03-16 | Mitsubishi Electric Corp | |
JPS59227041A (en) * | 1983-06-06 | 1984-12-20 | Mitsubishi Electric Corp | Three-dimensional control driving device of optical disk reproduing device |
JPH0462136B2 (en) * | 1983-06-06 | 1992-10-05 | Mitsubishi Electric Corp | |
JPS6145724U (en) * | 1985-07-09 | 1986-03-26 | パイオニア株式会社 | Pickup device for optical information reading device |
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