JPH0435815B2 - - Google Patents
Info
- Publication number
- JPH0435815B2 JPH0435815B2 JP58198764A JP19876483A JPH0435815B2 JP H0435815 B2 JPH0435815 B2 JP H0435815B2 JP 58198764 A JP58198764 A JP 58198764A JP 19876483 A JP19876483 A JP 19876483A JP H0435815 B2 JPH0435815 B2 JP H0435815B2
- Authority
- JP
- Japan
- Prior art keywords
- neutral position
- objective lens
- rotating body
- magnetic material
- position setting
- 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
- 230000007935 neutral effect Effects 0.000 claims description 64
- 239000000696 magnetic material Substances 0.000 claims description 28
- 230000003287 optical effect Effects 0.000 claims description 21
- 230000004907 flux Effects 0.000 claims description 20
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000003190 viscoelastic substance Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000004804 winding Methods 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
- G11B7/0925—Electromechanical actuators for lens positioning
- G11B7/0933—Details of stationary parts
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19876483A JPS6089839A (ja) | 1983-10-24 | 1983-10-24 | 光学的情報記録再生装置における対物レンズ駆動装置のフオ−カス方向中立位置設定装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19876483A JPS6089839A (ja) | 1983-10-24 | 1983-10-24 | 光学的情報記録再生装置における対物レンズ駆動装置のフオ−カス方向中立位置設定装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6089839A JPS6089839A (ja) | 1985-05-20 |
| JPH0435815B2 true JPH0435815B2 (fr) | 1992-06-12 |
Family
ID=16396551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19876483A Granted JPS6089839A (ja) | 1983-10-24 | 1983-10-24 | 光学的情報記録再生装置における対物レンズ駆動装置のフオ−カス方向中立位置設定装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6089839A (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62141646A (ja) * | 1985-12-17 | 1987-06-25 | Seiko Instr & Electronics Ltd | 対物レンズ駆動装置 |
| JPH0752516B2 (ja) * | 1987-02-24 | 1995-06-05 | 三菱電機株式会社 | 対物レンズ駆動装置 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6131385Y2 (fr) * | 1980-12-22 | 1986-09-12 |
-
1983
- 1983-10-24 JP JP19876483A patent/JPS6089839A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6089839A (ja) | 1985-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5293363A (en) | Optical head apparatus with light weight movable lens holder | |
| JPH0750528B2 (ja) | 対物レンズ駆動装置 | |
| JPH0435815B2 (fr) | ||
| JPS6089838A (ja) | 光学的情報記録再生装置における対物レンズ駆動装置のトラツク方向中立位置設定装置 | |
| US4747668A (en) | Optical scanning unit | |
| JPS58175143A (ja) | 光学ピツクアツプ | |
| JPH0424769B2 (fr) | ||
| US4783775A (en) | Driver for an objective of an optical scanning unit | |
| JPS62219338A (ja) | 対物レンズ駆動装置 | |
| JPH09237428A (ja) | 二軸アクチュエータ及び光ディスク装置 | |
| JPH0445891B2 (fr) | ||
| JPS61104340A (ja) | 光スポツト制御装置 | |
| JPS62173638A (ja) | 光ピツクアツプ装置 | |
| JPH0229937A (ja) | 光ピックアップ装置 | |
| JPH01192025A (ja) | 対物レンズ駆動装置 | |
| JPS6332735A (ja) | ディスク再生装置 | |
| JPH0752516B2 (ja) | 対物レンズ駆動装置 | |
| JPH01192024A (ja) | 対物レンズ駆動装置 | |
| JPS63317934A (ja) | 対物レンズ駆動装置 | |
| JPH0752515B2 (ja) | 対物レンズ駆動装置 | |
| JPH03113729A (ja) | 対物レンズ駆動装置 | |
| JPH10302280A (ja) | 光ヘッド用アクチュエータ | |
| JPH02301025A (ja) | 光学式ピックアップ装置 | |
| JPS61202341A (ja) | 対物レンズ駆動装置 | |
| JPH0472296B2 (fr) |