Optoelectronic device for reading data contained on a magnetic medium
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United States of America Patent
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-
Apr 9, 1985
Grant Date -
N/A
app pub date -
Sep 14, 1982
filing date -
Oct 16, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optoelectronic device for reading data contained on the magnetic surfacef a carrier comprises a source (SLP.sub.i) for emitting a beam of polarized light and means (MDK.sub.i) for detecting the angle of rotation of the polarization plane of the light. An optical focusing lens is provided for focusing onto a large observation field to enable simultaneous viewing of a plurality of tracks and a plurality of data on each track. Projection lenses (MPROJ.sub.i) enable projection of the image of the surface viewed by the optical means onto a plane P where optoelectronic transducers (TRPE.sub.ij) have been set up. The transducers may be arranged in a matrix or along a straight line.
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