Optical flying head with solid immersion lens having raised central surface facing medium
Patent 5729393 Issued on March 17, 1998. Estimated Expiration Date: 
April 26, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 26, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesPlastic lens cell Lens alignment apparatus for use in a projection television Optical recording system employing a solid immersion lens Optical disk data storage system with radiation-transparent air-bearing slider Patent #: 5497359 InventorsAssigneeApplicationNo. 638349 filed on 04/26/1996US Classes:359/819, Lens mounts359/808, With lens casing359/811, With support369/44.15Elastic, flexible, pliant or spring support of lens or mirrorExaminersPrimary: Ben, LohaAttorney, Agent or FirmForeign Patent References
International ClassG02B 007/02AbstractAn 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.Other References
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