JPS5766536A - Reading lens device - Google Patents
Reading lens deviceInfo
- Publication number
- JPS5766536A JPS5766536A JP14327080A JP14327080A JPS5766536A JP S5766536 A JPS5766536 A JP S5766536A JP 14327080 A JP14327080 A JP 14327080A JP 14327080 A JP14327080 A JP 14327080A JP S5766536 A JPS5766536 A JP S5766536A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnets
- energizing
- flowed
- current
- adjustment
- 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.)
- Pending
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
- 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
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To achieve accurate irradiation with laser by fitting permanent magnets and a magnetic ring to a lens holder, by providing permanent magnets having energizing coils and magnetic bodies opposite to them, and by varying their energizing currents. CONSTITUTION:To the upper part and lower part of a reading lens holer 1, permanent magnets 3a-3d, and 7a-7d are fitted and to the intermediate part, a magnetic ring 11 is also fitted; and permanent magnets 4a-4d, and 7a-7d having prescribed energizing coils, and magnetic plates 12a-12c are arranged in opposition to them so that repulsion iss produced among them. For focus adjustment, a current is flowed through neither the upper nor lower energizing coil, and the current is flowed through the energizing coil 13a or 13b to move up and down to the holder 1, making the focus adjustment. For track correction time-axis adjustment, a current is flowed through the prescribed energizing coil to make the adjustment similarly. Consequently, irradiation with laser is performed accurately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14327080A JPS5766536A (en) | 1980-10-14 | 1980-10-14 | Reading lens device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14327080A JPS5766536A (en) | 1980-10-14 | 1980-10-14 | Reading lens device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5766536A true JPS5766536A (en) | 1982-04-22 |
Family
ID=15334839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14327080A Pending JPS5766536A (en) | 1980-10-14 | 1980-10-14 | Reading lens device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5766536A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5972658A (en) * | 1982-09-16 | 1984-04-24 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | Optical apparatus for deflection or positional adjustment ofradiation beam |
-
1980
- 1980-10-14 JP JP14327080A patent/JPS5766536A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5972658A (en) * | 1982-09-16 | 1984-04-24 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | Optical apparatus for deflection or positional adjustment ofradiation beam |
| US4602848A (en) * | 1982-09-16 | 1986-07-29 | U.S. Philips Corporation | Optical apparatus with 5-degree of-freedom positioning device |
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