Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2006-05-30
2006-05-30
Letscher, George J. (Department: 2653)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C385S036000
Reexamination Certificate
active
07054255
ABSTRACT:
A near-field optical head has a minute structure formed in the support member for interacting with a recording medium via near-field light. An optical waveguide is provided on the support member for guiding light between a light source and the minute structure. The optical waveguide has a core, a clad and a reflective surface, the core having an end face facing the reflective surface and being spaced therefrom so that light traveling through the optical waveguide is projected from the end face of the core onto the reflective surface and is reflected by the reflective surface toward the minute structure. Information is recorded to and/or read from the recording medium based on the scattering of near-field light between the recording medium and the minute structure while the near-field optical head is positioned over the surface of the recording medium.
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Kasama Nobuyuki
Kato Kenji
Maeda Hidetaka
Mitsuoka Yasuyuki
Niwa Takashi
Adams & Wilks
Letscher George J.
Magee Christopher R
Seiko Instruments Inc.
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