Optical write/read device and an information recording media

Details Optical write/read device and an information recording media Optical write/read device and an information recording media

1996-08-30

1997-11-18

Ben, Loha

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369103, 369 59, 369112, 359566, G11B 700

Patent

active

056894910

ABSTRACT:
A method for optically writing/reading information is disclosed, where information is written onto and read from an information recording medium. Light is emitted from a light emitting element and is split into a zero-order diffracted light and a first-order diffracted light by way of a diffraction grating. The zero-order diffracted light and the first-order diffracted light are focused from the diffraction grating onto the information recording medium such that at least a portion of at least the first-order diffracted light is reflected from the information recording medium. The reflected first-order diffracted light is focused from the information recording medium onto a light receiving element paired with and positioned adjacent the light emitting element.

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