Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Reexamination Certificate
2008-07-29
2008-07-29
Huber, Paul (Department: 2627)
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
C369S044350
Reexamination Certificate
active
11030972
ABSTRACT:
An optical apparatus includes: a light source outputting light; a head disposed so as to face a disk on which a signal is recordable, the head being capable of condensing a light from the light source onto the disk as near-field light; an distance adjusting mechanism adjusting a distance between the head and the disk; first control means for causing the head to approach the disk and controlling the head to nearly stop at a position where a distance from the disk is a first distance at which the light is condensed on the disk by the head as the near-field light; detection means for detecting if the distance is the first distance; and second control means for controlling the distance adjusting mechanism based on the detected signal so as that the distance is a second distance under near-field light condition.
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Huber Paul
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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