Dithering optical data logger
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United States of America Patent
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-
Nov 20, 1990
Grant Date -
N/A
app pub date -
Dec 2, 1988
filing date -
Dec 2, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A data logger which incorporates a laser diode and focusing optics for logging data pits in optical recording media. The focusing optics may be attached to a spring assembly and caused to oscillate by electromagnetic or mechanical means. As the optical elements oscillate, the focused beam dithers above and below the surface of the recording media. When the laser beam focal region is in the plane of the recording surface a pit or deformation is formed in the surface. Relative motion is provided between the recording surface and the laser beam spot for further writing on the recording surface.
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