Near-field optical head having tapered hole for guiding...

Details Near-field optical head having tapered hole for guiding... Near-field optical head having tapered hole for guiding...

1999-11-04

2009-10-06

Dinh, Tan X (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112090

Reexamination Certificate

active

07599277

ABSTRACT:
A near-field optical head has a planar substrate having a first surface, a second surface disposed opposite to the first surface, and an inverted conical or pyramidal hole extending through the first and second surfaces. The conical or pyramidal hole has at least one fine aperture formed at an apex thereof and is disposed on the first surface of the planar substrate. An optical waveguide is disposed on the second surface of the planar substrate for propagating light. A light reflection film is disposed in the optical waveguide for reflecting in the direction of the fine aperture light propagated through the optical waveguide.

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