JPS639308B2 - - Google Patents
Info
- Publication number
- JPS639308B2 JPS639308B2 JP1720980A JP1720980A JPS639308B2 JP S639308 B2 JPS639308 B2 JP S639308B2 JP 1720980 A JP1720980 A JP 1720980A JP 1720980 A JP1720980 A JP 1720980A JP S639308 B2 JPS639308 B2 JP S639308B2
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- movable member
- fixed
- optical axis
- permanent magnet
- 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
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
- G11B7/0929—Electromechanical actuators for lens positioning for tracking only
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1720980A JPS56117338A (en) | 1980-02-16 | 1980-02-16 | Driving device for objective lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1720980A JPS56117338A (en) | 1980-02-16 | 1980-02-16 | Driving device for objective lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56117338A JPS56117338A (en) | 1981-09-14 |
| JPS639308B2 true JPS639308B2 (en]) | 1988-02-26 |
Family
ID=11937541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1720980A Granted JPS56117338A (en) | 1980-02-16 | 1980-02-16 | Driving device for objective lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56117338A (en]) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59193552A (ja) * | 1983-04-18 | 1984-11-02 | Sharp Corp | 光集束位置制御装置 |
-
1980
- 1980-02-16 JP JP1720980A patent/JPS56117338A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56117338A (en) | 1981-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4386823A (en) | Objective lens driving device | |
| US4472024A (en) | Apparatus for driving objective lens | |
| JPH064415Y2 (ja) | レンズ駆動装置 | |
| US4479051A (en) | Apparatus for driving objective lens in tracking direction | |
| US4408313A (en) | Objective lens driving device for tracking and focus corrections | |
| JPS6245613B2 (en]) | ||
| JPS5864649A (ja) | 対物レンズ駆動装置 | |
| US4507764A (en) | Objective lens drive device with tracking error correction with flux of opposite direction | |
| JPS5864648A (ja) | 対物レンズ駆動装置 | |
| JPH0132579B2 (en]) | ||
| JPS6349294B2 (en]) | ||
| JPS639308B2 (en]) | ||
| JPS639307B2 (en]) | ||
| JPS639309B2 (en]) | ||
| JPH0313650B2 (en]) | ||
| JPH0237129Y2 (en]) | ||
| JPH0440784B2 (en]) | ||
| KR830002569B1 (ko) | 대물렌즈 구동장치 | |
| JPS624909Y2 (en]) | ||
| KR830002570B1 (ko) | 대물렌즈 구동장치 | |
| JPS621134A (ja) | 対物レンズ駆動装置 | |
| KR830002571B1 (ko) | 대물렌즈 구동장치 | |
| JPH054732B2 (en]) | ||
| JPS58169345A (ja) | 対物レンズ駆動装置 | |
| JP2503403Y2 (ja) | 光学式情報記録再生装置におけるピツクアツプ装置 |