JPH058498B2 - - Google Patents
Info
- Publication number
- JPH058498B2 JPH058498B2 JP59120220A JP12022084A JPH058498B2 JP H058498 B2 JPH058498 B2 JP H058498B2 JP 59120220 A JP59120220 A JP 59120220A JP 12022084 A JP12022084 A JP 12022084A JP H058498 B2 JPH058498 B2 JP H058498B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- recording medium
- lens
- output signal
- superimposing
- 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
- G11B7/0908—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 for focusing only
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Automatic Focus Adjustment (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12022084A JPS60263335A (ja) | 1984-06-12 | 1984-06-12 | 焦点合せ装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12022084A JPS60263335A (ja) | 1984-06-12 | 1984-06-12 | 焦点合せ装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60263335A JPS60263335A (ja) | 1985-12-26 |
| JPH058498B2 true JPH058498B2 (enrdf_load_stackoverflow) | 1993-02-02 |
Family
ID=14780852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12022084A Granted JPS60263335A (ja) | 1984-06-12 | 1984-06-12 | 焦点合せ装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60263335A (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61195517U (enrdf_load_stackoverflow) * | 1985-05-16 | 1986-12-05 | ||
| JP6124628B2 (ja) * | 2013-03-14 | 2017-05-10 | オリンパス株式会社 | 焦点調節装置及び焦点調節方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59149229U (ja) * | 1983-03-22 | 1984-10-05 | フオスタ−電機株式会社 | フオ−カスサ−ボ回路 |
-
1984
- 1984-06-12 JP JP12022084A patent/JPS60263335A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60263335A (ja) | 1985-12-26 |