Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1998-09-08
2000-07-18
Dinh, Tan
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369 4414, 369 4423, 369 13, 359664, G11B 7125
Patent
active
06091694&
ABSTRACT:
An immersion system for a magneto-optical storage device has a spherical-segment-shaped lens. The lens is formed of material that is transparent to the electromagnetic radiation of the wavelength .lambda. at which the device is operated, and preferably of a semiconductor material. The lens has a first refractive index n.sub.1 which is greater than that of air. A layer with a higher refractive index than the lens is disposed in the propagation path of the electromagnetic radiation. The layer is composed of a material with a second refractive index n.sub.2 that is greater than the first refractive index n.sub.1 of the material of the lens.
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Chu Kim-Kwok
Dinh Tan
Greenberg Laurence A.
Lerner Herbert L.
Siemens Aktiengesellschaft
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