FIELD: instrument engineering. SUBSTANCE: unit has two modulated flat-polarized electromagnet radiation sources. In order to converge beams of the sources automatic converging system is used. Movable information carrier is used for the purpose. EFFECT: improved reliability of recording and restoration. 5 cl, 9 dwg
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---|---|---|---|
OPTIC STORAGE | 1989 |
|
SU1835958A1 |
OPTOMECHANICAL MEMORY UNIT | 0 |
|
SU1753489A1 |
DEVICE FOR RECORDING AND/OR PLAYING BACK FROM INFORMATION TRACKS OF MOVING MEDIUM | 0 |
|
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METHOD AND DEVICE FOR AUTOMATIC FOCUSING ON OPTICAL BEAM ONTO DATA MEDIUM EFFECTIVE LAYER | 2000 |
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DEVICE FOR MONITORING DATA TRACK OF OPTICAL RECORDING MEDIUM | 0 |
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DEVICE FOR CONTROL OVER INFORMATION TRACK OF OPTIC INFORMATION CARRIER | 0 |
|
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APPARATUS FOR MEASURING REFRACTIVE INDEX OF LIGHT-DIFFUSING MEDIUM | 0 |
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DATA READ-WRITE DEVICE | 0 |
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DEVICE FOR FOCUSING LASER RADIATION ON AN OBJECT | 2005 |
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RU2301496C1 |
METHOD OF RECORDING INFORMATION ONTO OPTICAL CARRIER | 1989 |
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SU1831167A1 |
Authors
Dates
1995-06-19—Published
1989-11-09—Filed