Tilt control method of near-field optical system

Details Tilt control method of near-field optical system Tilt control method of near-field optical system

2010-05-21

2011-11-01

Tran, Thang (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S013330

Reexamination Certificate

active

08050162

ABSTRACT:
A tilt control method for a near-field optical disc drive is provided. A gap between a lens and a disc is estimated. A tilt compensation for the lens is estimated according to a tilt signal when the lens is within a far-field region. A coarse tilt control is performed on the lens according to the tilt compensation when the lens is within the far-field region.

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