JPS6130327B2 - - Google Patents
Info
- Publication number
- JPS6130327B2 JPS6130327B2 JP56031790A JP3179081A JPS6130327B2 JP S6130327 B2 JPS6130327 B2 JP S6130327B2 JP 56031790 A JP56031790 A JP 56031790A JP 3179081 A JP3179081 A JP 3179081A JP S6130327 B2 JPS6130327 B2 JP S6130327B2
- Authority
- JP
- Japan
- Prior art keywords
- voice coil
- actuator
- light irradiation
- irradiation system
- circuit
- 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
- 230000005291 magnetic effect Effects 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 15
- 230000033001 locomotion Effects 0.000 claims description 5
- 230000003321 amplification Effects 0.000 description 6
- 238000003199 nucleic acid amplification method Methods 0.000 description 6
- 238000013016 damping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000012780 transparent material Substances 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
-
- 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
-
- 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
- G11B7/0932—Details of sprung supports
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3179081A JPS57147142A (en) | 1981-03-04 | 1981-03-04 | Pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3179081A JPS57147142A (en) | 1981-03-04 | 1981-03-04 | Pickup device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57147142A JPS57147142A (en) | 1982-09-10 |
| JPS6130327B2 true JPS6130327B2 (da) | 1986-07-12 |
Family
ID=12340854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3179081A Granted JPS57147142A (en) | 1981-03-04 | 1981-03-04 | Pickup device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57147142A (da) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0833054B2 (ja) * | 1989-03-30 | 1996-03-29 | 株式会社平井技研 | 屋根装置 |
| JP2742715B2 (ja) * | 1989-10-17 | 1998-04-22 | 株式会社小野測器 | 機械特性評価用光ピックアップの校正方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5161724A (da) * | 1974-11-27 | 1976-05-28 | Nippon Musical Instruments Mfg |
-
1981
- 1981-03-04 JP JP3179081A patent/JPS57147142A/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5161724A (da) * | 1974-11-27 | 1976-05-28 | Nippon Musical Instruments Mfg |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57147142A (en) | 1982-09-10 |
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