JPH0474782B2 - - Google Patents
Info
- Publication number
- JPH0474782B2 JPH0474782B2 JP57083529A JP8352982A JPH0474782B2 JP H0474782 B2 JPH0474782 B2 JP H0474782B2 JP 57083529 A JP57083529 A JP 57083529A JP 8352982 A JP8352982 A JP 8352982A JP H0474782 B2 JPH0474782 B2 JP H0474782B2
- Authority
- JP
- Japan
- Prior art keywords
- lens barrel
- central axis
- optical system
- tracking
- optical
- 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
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 |
|---|---|---|---|
| JP8352982A JPS58200438A (ja) | 1982-05-18 | 1982-05-18 | 光ピツクアツプ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8352982A JPS58200438A (ja) | 1982-05-18 | 1982-05-18 | 光ピツクアツプ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58200438A JPS58200438A (ja) | 1983-11-22 |
| JPH0474782B2 true JPH0474782B2 (enrdf_load_stackoverflow) | 1992-11-27 |
Family
ID=13805012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8352982A Granted JPS58200438A (ja) | 1982-05-18 | 1982-05-18 | 光ピツクアツプ |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58200438A (enrdf_load_stackoverflow) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55153138A (en) * | 1979-05-14 | 1980-11-28 | Mitsubishi Electric Corp | Optical pickup unit |
-
1982
- 1982-05-18 JP JP8352982A patent/JPS58200438A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58200438A (ja) | 1983-11-22 |
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