JPH0352821U - - Google Patents
Info
- Publication number
- JPH0352821U JPH0352821U JP1989112922U JP11292289U JPH0352821U JP H0352821 U JPH0352821 U JP H0352821U JP 1989112922 U JP1989112922 U JP 1989112922U JP 11292289 U JP11292289 U JP 11292289U JP H0352821 U JPH0352821 U JP H0352821U
- Authority
- JP
- Japan
- Prior art keywords
- light
- bobbin
- head device
- optical head
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 44
- 238000010586 diagram Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 2
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
- G11B7/0929—Electromechanical actuators for lens positioning for tracking only
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989112922U JPH0636499Y2 (ja) | 1989-09-26 | 1989-09-26 | 光学式ヘッド装置 |
US07/588,012 US5078471A (en) | 1989-09-26 | 1990-09-25 | Optical head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989112922U JPH0636499Y2 (ja) | 1989-09-26 | 1989-09-26 | 光学式ヘッド装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0352821U true JPH0352821U (US08063081-20111122-C00044.png) | 1991-05-22 |
JPH0636499Y2 JPH0636499Y2 (ja) | 1994-09-21 |
Family
ID=14598847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1989112922U Expired - Fee Related JPH0636499Y2 (ja) | 1989-09-26 | 1989-09-26 | 光学式ヘッド装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US5078471A (US08063081-20111122-C00044.png) |
JP (1) | JPH0636499Y2 (US08063081-20111122-C00044.png) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5448540A (en) * | 1990-09-21 | 1995-09-05 | Victor Company Of Japan, Ltd. | Device for detecting the position of a recording/reproducing element |
JPH0512690A (ja) * | 1991-07-08 | 1993-01-22 | Toshiba Corp | 対物レンズの位置検知回路 |
US5321678A (en) * | 1991-08-13 | 1994-06-14 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical head carriage, tracking mechanism and displacement detecting mechanism |
US5278401A (en) * | 1991-08-13 | 1994-01-11 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical disc apparatus having five light receiving areas for detecting focus error and tracking error |
US5416756A (en) * | 1991-11-07 | 1995-05-16 | Mitsubishi Denki Kabushiki Kaisha | Lens actuating system with improved frequency response for optical disk drive |
US5408455A (en) * | 1992-04-08 | 1995-04-18 | Asahi Kogaku Kogyo Kabushiki Kaisha | Control device for head unit having optical head and multiple magnetic heads |
US5970037A (en) * | 1992-06-08 | 1999-10-19 | Asahi Kogaku Kogyo Kabushiki Kaisha | Magneto-optical disk apparatus |
US5414563A (en) * | 1992-07-28 | 1995-05-09 | Asahi Kogaku Kogyo Kabushiki Kaisha | Electromagnetic objective lens driving apparatus of optical data recording and reproducing apparatus |
JP3411603B2 (ja) * | 1992-07-28 | 2003-06-03 | ペンタックス株式会社 | 光学式情報記録再生装置の対物レンズ電磁駆動装置 |
US5416753A (en) * | 1992-11-16 | 1995-05-16 | Asahi Kogaku Kogyo Kabushiki Kaisha | Magneto-optical disk drive system with head position adjustability |
US5768241A (en) * | 1993-11-06 | 1998-06-16 | Asahi Kogaku Kogyo Kabushiki Kaisha | Shutter operating mechanism for magneto-optical disk drive |
US5663840A (en) * | 1994-06-14 | 1997-09-02 | Nec Corporation | Objective lens actuator for optical head and used for high speed access |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57152619U (US08063081-20111122-C00044.png) * | 1981-03-20 | 1982-09-25 | ||
JPS62128030A (ja) * | 1985-11-28 | 1987-06-10 | Matsushita Electric Ind Co Ltd | 位置検出装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62162241A (ja) * | 1986-01-09 | 1987-07-18 | Nec Corp | レンズアクチユエ−タ |
DE3723428A1 (de) * | 1986-07-15 | 1988-01-28 | Asahi Optical Co Ltd | Magnetkopfeinstellvorrichtung |
US4868377A (en) * | 1987-02-04 | 1989-09-19 | Asahi Optical Co., Ltd. | Optical pickup for reading optical disk information provided with error detecting means by knife edge test |
JPS63214925A (ja) * | 1987-03-03 | 1988-09-07 | Seiko Epson Corp | 光学ヘツド |
US4799766A (en) * | 1988-03-15 | 1989-01-24 | Eastman Kodak Company | Objective lens support and positioning system |
-
1989
- 1989-09-26 JP JP1989112922U patent/JPH0636499Y2/ja not_active Expired - Fee Related
-
1990
- 1990-09-25 US US07/588,012 patent/US5078471A/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57152619U (US08063081-20111122-C00044.png) * | 1981-03-20 | 1982-09-25 | ||
JPS62128030A (ja) * | 1985-11-28 | 1987-06-10 | Matsushita Electric Ind Co Ltd | 位置検出装置 |
Also Published As
Publication number | Publication date |
---|---|
JPH0636499Y2 (ja) | 1994-09-21 |
US5078471A (en) | 1992-01-07 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |