JPH0452532B2 - - Google Patents
Info
- Publication number
- JPH0452532B2 JPH0452532B2 JP58009089A JP908983A JPH0452532B2 JP H0452532 B2 JPH0452532 B2 JP H0452532B2 JP 58009089 A JP58009089 A JP 58009089A JP 908983 A JP908983 A JP 908983A JP H0452532 B2 JPH0452532 B2 JP H0452532B2
- Authority
- JP
- Japan
- Prior art keywords
- fixed
- magnetic
- magnetic body
- radial direction
- lens barrel
- 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
- 230000003287 optical effect Effects 0.000 claims description 26
- 230000004907 flux Effects 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004065 semiconductor Substances 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
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP908983A JPS59135635A (ja) | 1983-01-21 | 1983-01-21 | 光ピックアップ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP908983A JPS59135635A (ja) | 1983-01-21 | 1983-01-21 | 光ピックアップ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59135635A JPS59135635A (ja) | 1984-08-03 |
| JPH0452532B2 true JPH0452532B2 (US20100056889A1-20100304-C00004.png) | 1992-08-24 |
Family
ID=11710886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP908983A Granted JPS59135635A (ja) | 1983-01-21 | 1983-01-21 | 光ピックアップ |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59135635A (US20100056889A1-20100304-C00004.png) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5727442A (en) * | 1980-07-23 | 1982-02-13 | Olympus Optical Co Ltd | Objective lens driving device |
-
1983
- 1983-01-21 JP JP908983A patent/JPS59135635A/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5727442A (en) * | 1980-07-23 | 1982-02-13 | Olympus Optical Co Ltd | Objective lens driving device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59135635A (ja) | 1984-08-03 |
