JPS6258050B2 - - Google Patents
Info
- Publication number
- JPS6258050B2 JPS6258050B2 JP10255682A JP10255682A JPS6258050B2 JP S6258050 B2 JPS6258050 B2 JP S6258050B2 JP 10255682 A JP10255682 A JP 10255682A JP 10255682 A JP10255682 A JP 10255682A JP S6258050 B2 JPS6258050 B2 JP S6258050B2
- Authority
- JP
- Japan
- Prior art keywords
- frame
- electromagnetic
- focusing lens
- electromagnetic yoke
- solenoid coil
- 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 18
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000004043 responsiveness Effects 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
Landscapes
- Optical Recording Or Reproduction (AREA)
- Automatic Focus Adjustment (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10255682A JPS58220253A (ja) | 1982-06-15 | 1982-06-15 | 光学ヘツド |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10255682A JPS58220253A (ja) | 1982-06-15 | 1982-06-15 | 光学ヘツド |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58220253A JPS58220253A (ja) | 1983-12-21 |
| JPS6258050B2 true JPS6258050B2 (US08197722-20120612-C00042.png) | 1987-12-03 |
Family
ID=14330506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10255682A Granted JPS58220253A (ja) | 1982-06-15 | 1982-06-15 | 光学ヘツド |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58220253A (US08197722-20120612-C00042.png) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100246212B1 (ko) * | 1991-05-31 | 2000-03-15 | 이데이 노부유끼 | 광 디스크장치 |
-
1982
- 1982-06-15 JP JP10255682A patent/JPS58220253A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58220253A (ja) | 1983-12-21 |
