Near field optical disc and near field optical disc reading...

Details Near field optical disc and near field optical disc reading... Near field optical disc and near field optical disc reading...

2011-06-28

2011-06-28

Edun, Muhammad N (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044120, C369S112270, C369S112280, C369S118000

Reexamination Certificate

active

07969830

ABSTRACT:
A near field optical disc and a near field optical disc reading apparatus are provided. The near field optical disc has at least one light source and a near field optical pick-up head, and the near field optical disc includes a light guiding substance, a first reflection layer and a second reflection layer. The light guiding substance has a first surface, a second surface opposite thereto and at least one light entrance window. Light emitted from the light source enters the light guiding substance through the light entrance window. The second reflection layer is disposed on the second surface. The first reflection layer is disposed on the first surface and has a plurality of light pervious holes. A part of the light is transmitted through the light pervious holes and picked up by the near field optical pick-up head.

REFERENCES:
patent: 6687200 (2004-02-01), Kobayashi
patent: 7154820 (2006-12-01), Nakada et al.
patent: 2006/0127003 (2006-06-01), Park et al.

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