JPH0447899B2 - - Google Patents
Info
- Publication number
- JPH0447899B2 JPH0447899B2 JP59082395A JP8239584A JPH0447899B2 JP H0447899 B2 JPH0447899 B2 JP H0447899B2 JP 59082395 A JP59082395 A JP 59082395A JP 8239584 A JP8239584 A JP 8239584A JP H0447899 B2 JPH0447899 B2 JP H0447899B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- coil
- medium surface
- magnetic field
- coils
- 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.)
- Expired - Lifetime
Links
- 239000004020 conductor Substances 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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
- G11B7/09—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
- G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8239584A JPS6022744A (ja) | 1984-04-24 | 1984-04-24 | ピツクアツプ装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8239584A JPS6022744A (ja) | 1984-04-24 | 1984-04-24 | ピツクアツプ装置 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2678A Division JPS5494007A (en) | 1978-01-05 | 1978-01-05 | Pickup for disc recorder recorded optically with information |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6022744A JPS6022744A (ja) | 1985-02-05 |
JPH0447899B2 true JPH0447899B2 (US06858664-20050222-C00036.png) | 1992-08-05 |
Family
ID=13773395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8239584A Granted JPS6022744A (ja) | 1984-04-24 | 1984-04-24 | ピツクアツプ装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6022744A (US06858664-20050222-C00036.png) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2537397B2 (ja) * | 1989-03-30 | 1996-09-25 | 旭光学工業株式会社 | 光学式ピックアップ装置 |
Citations (1)
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 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5138326Y2 (US06858664-20050222-C00036.png) * | 1972-06-30 | 1976-09-20 |
-
1984
- 1984-04-24 JP JP8239584A patent/JPS6022744A/ja active Granted
Patent Citations (1)
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 |
Also Published As
Publication number | Publication date |
---|---|
JPS6022744A (ja) | 1985-02-05 |