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Filing date
Publication date
Application filed by Bell & Howell CofiledCriticalBell & Howell Co
Application grantedgrantedCritical
Publication of AT274582BpublicationCriticalpatent/AT274582B/de
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
G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
Landscapes
Physics & Mathematics
(AREA)
Optics & Photonics
(AREA)
Optical Recording Or Reproduction
(AREA)
Optical Head
(AREA)
AT728366A1965-09-031966-07-29Einrichtung zur photo-optischen Intensitätsaufzeichnung und Wiedergabe
AT274582B
(de)