Optical focusing apparatus for the reading of a data medium moving past it
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United States of America Patent
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Dec 30, 1986
Grant Date -
N/A
app pub date -
Jan 19, 1984
filing date -
Jan 25, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Optical apparatus (DISFOCI1 to DISFOCI4) for focusing a beam of light for reading of a data medium moving past it, comprising, a main body (CPLI1 to CPLI4) disposed to fly above the data medium and at least one optical device (OPFOCI1, OPFOCI2, OPFOCI3, OPFOCI4, OPFOCI5) for focusing of the beam, the optical device being located such that its distance in relation to said medium remains constant. The optical device is placed on the main body and is integral with the movement thereof. The apparatus is adpated for optical reading of magnetic optical data.
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