JPS6343817B2 - - Google Patents
Info
- Publication number
- JPS6343817B2 JPS6343817B2 JP6662982A JP6662982A JPS6343817B2 JP S6343817 B2 JPS6343817 B2 JP S6343817B2 JP 6662982 A JP6662982 A JP 6662982A JP 6662982 A JP6662982 A JP 6662982A JP S6343817 B2 JPS6343817 B2 JP S6343817B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- holding cylinder
- optical pickup
- magnetic pole
- generation source
- 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
Links
- 230000003287 optical effect Effects 0.000 claims description 22
- 239000000696 magnetic material Substances 0.000 claims description 11
- 230000004907 flux Effects 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 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 |
|---|---|---|---|
| JP6662982A JPS58185035A (ja) | 1982-04-21 | 1982-04-21 | 光学式ピックアップ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6662982A JPS58185035A (ja) | 1982-04-21 | 1982-04-21 | 光学式ピックアップ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58185035A JPS58185035A (ja) | 1983-10-28 |
| JPS6343817B2 true JPS6343817B2 (US20080293856A1-20081127-C00127.png) | 1988-09-01 |
Family
ID=13321371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6662982A Granted JPS58185035A (ja) | 1982-04-21 | 1982-04-21 | 光学式ピックアップ |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58185035A (US20080293856A1-20081127-C00127.png) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6116041A (ja) * | 1984-07-03 | 1986-01-24 | Canon Inc | 可動支持機構 |
-
1982
- 1982-04-21 JP JP6662982A patent/JPS58185035A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58185035A (ja) | 1983-10-28 |
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