Optical flying head with solid immersion lens having raised central surface facing medium
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United States of America Patent
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-
Mar 17, 1998
Grant Date -
N/A
app pub date -
Apr 26, 1996
filing date -
Apr 3, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An air bearing assembly for an optical drive carries a solid immersion lens (SIL) having a bottom surface facing the disk contoured such that a central region where the optical path exits the bottom surface is closest to the recording medium regardless of perturbations in the attitude of the air bearing and neighboring points on the surface surrounding the central region recede for clearance but function at least partly as an air bearing. In one embodiment the bottom surface of the SIL has a radius of about 10 meters.
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