JPS5486302A - Optical recorder-reproducer - Google Patents
Optical recorder-reproducerInfo
- Publication number
- JPS5486302A JPS5486302A JP15356477A JP15356477A JPS5486302A JP S5486302 A JPS5486302 A JP S5486302A JP 15356477 A JP15356477 A JP 15356477A JP 15356477 A JP15356477 A JP 15356477A JP S5486302 A JPS5486302 A JP S5486302A
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- stored
- light deflector
- memory
- deviation
- 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
- 230000003287 optical effect Effects 0.000 title abstract 3
- 230000010287 polarization Effects 0.000 abstract 2
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: To correct deviations of beam spot from the reference optical axis on the scanning face of each objective lens by controlling a light deflector according to the quantity of polarization corresponding to the specified objective lens having been stored in a memory device.
CONSTITUTION: At the time of performing recording and reproducing by fixing a recording medium 1 and linearly moving a rotary scanner 2 provided with objective lenses 3 while letting the same rotate, the quantity of deviation of a light deflector 8 is beforehand measured with respect to each objective lens 3 and is stored in a memory 13. The scanning start time is detected with the detector 14 and this is supplied to a control circuit 16 via assignment circuit 15 and the quantity of polarization having been stored in the memory 13 is applied to the light deflector 9 via control circuit 12 and the apparatus is so constituted that the beam from a laser 6 is polarized for a specified quantity in this way. As a result, the deviation of the beam spot from the reference optical axis on the scanning face of each objective lens 3 may be corrected and therefore information may be accurately recorded and reproduced.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15356477A JPS5486302A (en) | 1977-12-22 | 1977-12-22 | Optical recorder-reproducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15356477A JPS5486302A (en) | 1977-12-22 | 1977-12-22 | Optical recorder-reproducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5486302A true JPS5486302A (en) | 1979-07-09 |
Family
ID=15565245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15356477A Pending JPS5486302A (en) | 1977-12-22 | 1977-12-22 | Optical recorder-reproducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5486302A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS589226A (en) * | 1981-07-07 | 1983-01-19 | Toshiba Corp | optical disc device |
| JPS5864640A (en) * | 1981-10-02 | 1983-04-18 | オプティカル・レコーディング・コーポレイション | Optical reproducer |
| JPS62103856A (en) * | 1985-10-31 | 1987-05-14 | Fujitsu Ltd | Optical information recording device |
-
1977
- 1977-12-22 JP JP15356477A patent/JPS5486302A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS589226A (en) * | 1981-07-07 | 1983-01-19 | Toshiba Corp | optical disc device |
| JPS5864640A (en) * | 1981-10-02 | 1983-04-18 | オプティカル・レコーディング・コーポレイション | Optical reproducer |
| JPS62103856A (en) * | 1985-10-31 | 1987-05-14 | Fujitsu Ltd | Optical information recording device |
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