Polarization of a reflected light beam is changed according to t

Details Polarization of a reflected light beam is changed according to t Polarization of a reflected light beam is changed according to t

1994-06-27

1996-09-24

Epps, Georgia Y.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692751, 369110, G11G 700

Patent

active

055597874

ABSTRACT:
An optical disk includes: information recording surface on which information is recorded by irradiating laser light, the information being readable based on the laser light reflected by the information recording surface; and surface transformed portion, arranged on the information recording surface, on which a plurality of transformed shapes each corresponding to the information are formed so that polarization conditions of the laser light reflected by the transformed shapes differ according to the information.

REFERENCES:
patent: 5255263 (1993-10-01), Van Uijen et al.
patent: 5331623 (1994-07-01), Matoba et al.
patent: 5331626 (1994-07-01), Sugiura
patent: 5357499 (1994-10-01), Nomoto
patent: 5359591 (1994-10-01), Nomoto

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