Optical system for recording and reading an information on a...

Details Optical system for recording and reading an information on a... Optical system for recording and reading an information on a...

G - Physics

03

G

352/32.5

G03G 5/00 (2006.01) G11B 7/003 (2006.01) G11B 7/125 (2006.01)

Patent

CA 1121511

AN OPTICAL SYSTEM FOR RECORDING AND READING AN INFORMATION ON A TAPE. Abstract of the Disclosure An optical system for recording n information signals on a photosensitive tape in the form of a discontinuous track made up of parallel track sections by means of n light beams having a two states modulated intensity, being simultaneously deflected by an acousto-optical deflector and focusing on the tape in the form of n equidistant spots aligned in a direction x. The combination of the deflection and a translation movement of the tape produces a scanning movement of said n spots in a direction perpendicular to x. The same system is made for the reading of the information transcribed on the tape, the beams being then not modulated, by means of photodetector means which receive the light emerging from the tape and provide information signals in relation with the physical modifications obtained on the tape during the recording.

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