Liquid immersion lens for optical data storage
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United States of America Patent
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Jul 4, 2000
Grant Date -
N/A
app pub date -
Jun 3, 1998
filing date -
Jun 3, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
A slider for an optical read head includes a liquid-immersion-lens between an objective lens and an optically transparent base of the slider. The liquid-immersion-lens includes a high index of refraction liquid, thereby eliminating a lens-air interface at the lower surface of the objective lens. The liquid-immersion-lens provides for the production of a small light spot at the surface of the optical disc.
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