JPS5774839A - Optical head - Google Patents
Optical headInfo
- Publication number
- JPS5774839A JPS5774839A JP14973380A JP14973380A JPS5774839A JP S5774839 A JPS5774839 A JP S5774839A JP 14973380 A JP14973380 A JP 14973380A JP 14973380 A JP14973380 A JP 14973380A JP S5774839 A JPS5774839 A JP S5774839A
- Authority
- JP
- Japan
- Prior art keywords
- optical head
- focus
- moved
- controlling
- track
- 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
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
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To access a track exactly, by holding a condenser lens so that it can be displaced only in the direction for controlling a focus. CONSTITUTION:An optical head body 10 is constituted so that it is moved only in the direction for accessing a track against a head external housing 20, and a moving body 13 is also constituted so as to be moved only in the direction for controlling a focus against the optical head body 10. Movement of the optical head body 10 and the moving body 13 is controlled by electromagnetic coil part 14, 19 and magnets 17, 21, respectively, therefore, no unnecessary vibration is generated, and its control is executed easily. Also, a light beam irradiated to the disk is moved in parallel with the direction for accessing a track, therefore, its position is detected easily. Furthermore, since the direction of the light beam is diverted by 90 deg. by a mirror 18, dimension of the direction for controlling a focus is made small.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14973380A JPS5774839A (en) | 1980-10-25 | 1980-10-25 | Optical head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14973380A JPS5774839A (en) | 1980-10-25 | 1980-10-25 | Optical head |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5774839A true JPS5774839A (en) | 1982-05-11 |
JPH026134B2 JPH026134B2 (en) | 1990-02-07 |
Family
ID=15481618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14973380A Granted JPS5774839A (en) | 1980-10-25 | 1980-10-25 | Optical head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5774839A (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5936033U (en) * | 1982-08-31 | 1984-03-06 | 日本電気ホームエレクトロニクス株式会社 | optical pick up |
JPS5965940A (en) * | 1982-10-06 | 1984-04-14 | Alps Electric Co Ltd | Objective lens driving device |
JPS5965943A (en) * | 1982-10-06 | 1984-04-14 | Alps Electric Co Ltd | Objective lens driving device |
JPS5965941A (en) * | 1982-10-06 | 1984-04-14 | Alps Electric Co Ltd | Objective lens driving device |
JPS5965942A (en) * | 1982-10-06 | 1984-04-14 | Alps Electric Co Ltd | Objective lens driving device |
JPS5987630A (en) * | 1982-11-10 | 1984-05-21 | Hitachi Ltd | Optical head driver |
JPS5999225U (en) * | 1982-12-23 | 1984-07-05 | 日本電気ホームエレクトロニクス株式会社 | Optical pick-up device |
JPS59193551A (en) * | 1983-04-18 | 1984-11-02 | Sharp Corp | Controller for light focusing position |
JPS59195336A (en) * | 1983-04-19 | 1984-11-06 | Sharp Corp | Controller for light condensing position |
JPS61118117U (en) * | 1984-12-28 | 1986-07-25 | ||
JPS61214230A (en) * | 1985-03-20 | 1986-09-24 | Hitachi Ltd | Optical disc device |
JPS62250525A (en) * | 1986-04-22 | 1987-10-31 | Kyocera Corp | High speed random access method |
JPS62175419U (en) * | 1986-04-22 | 1987-11-07 | ||
JPS62289934A (en) * | 1986-06-09 | 1987-12-16 | Fujitsu Ltd | Tracking system for optical disk device |
JPS63181124A (en) * | 1987-01-22 | 1988-07-26 | Matsushita Electric Ind Co Ltd | Optical disk device |
JPH03203033A (en) * | 1989-12-28 | 1991-09-04 | Marantz Japan Inc | Brake circuit for tracking of optical pickup |
JPH0628680A (en) * | 1993-04-02 | 1994-02-04 | Hitachi Ltd | Access method and device for storing information |
-
1980
- 1980-10-25 JP JP14973380A patent/JPS5774839A/en active Granted
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5936033U (en) * | 1982-08-31 | 1984-03-06 | 日本電気ホームエレクトロニクス株式会社 | optical pick up |
JPS5965940A (en) * | 1982-10-06 | 1984-04-14 | Alps Electric Co Ltd | Objective lens driving device |
JPS5965943A (en) * | 1982-10-06 | 1984-04-14 | Alps Electric Co Ltd | Objective lens driving device |
JPS5965941A (en) * | 1982-10-06 | 1984-04-14 | Alps Electric Co Ltd | Objective lens driving device |
JPS5965942A (en) * | 1982-10-06 | 1984-04-14 | Alps Electric Co Ltd | Objective lens driving device |
JPS5987630A (en) * | 1982-11-10 | 1984-05-21 | Hitachi Ltd | Optical head driver |
JPS5999225U (en) * | 1982-12-23 | 1984-07-05 | 日本電気ホームエレクトロニクス株式会社 | Optical pick-up device |
JPS59193551A (en) * | 1983-04-18 | 1984-11-02 | Sharp Corp | Controller for light focusing position |
JPS59195336A (en) * | 1983-04-19 | 1984-11-06 | Sharp Corp | Controller for light condensing position |
JPH045058Y2 (en) * | 1984-12-28 | 1992-02-13 | ||
JPS61118117U (en) * | 1984-12-28 | 1986-07-25 | ||
JPS61214230A (en) * | 1985-03-20 | 1986-09-24 | Hitachi Ltd | Optical disc device |
JPS62175419U (en) * | 1986-04-22 | 1987-11-07 | ||
JPS62250525A (en) * | 1986-04-22 | 1987-10-31 | Kyocera Corp | High speed random access method |
JPS62289934A (en) * | 1986-06-09 | 1987-12-16 | Fujitsu Ltd | Tracking system for optical disk device |
JPS63181124A (en) * | 1987-01-22 | 1988-07-26 | Matsushita Electric Ind Co Ltd | Optical disk device |
JPH03203033A (en) * | 1989-12-28 | 1991-09-04 | Marantz Japan Inc | Brake circuit for tracking of optical pickup |
JP2565408B2 (en) * | 1989-12-28 | 1996-12-18 | 日本マランツ株式会社 | Brake circuit for tracking optical pickups |
JPH0628680A (en) * | 1993-04-02 | 1994-02-04 | Hitachi Ltd | Access method and device for storing information |
JP2606545B2 (en) * | 1993-04-02 | 1997-05-07 | 株式会社日立製作所 | Information storage device |
Also Published As
Publication number | Publication date |
---|---|
JPH026134B2 (en) | 1990-02-07 |
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