Information recording medium, and readout method and readout app

Details Information recording medium, and readout method and readout app Information recording medium, and readout method and readout app

1999-04-28

2000-11-07

Dinh, Tan

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692754, G11B 724

Patent

active

061446319

ABSTRACT:
An information recording medium comprising a substrate provided with recessed pits or grooves, and at least a metal layer and a light transmitting layer formed on the substrate in this order, or a metal substrate provided with recessed pits or grooves, and a light transmitting layer formed on the metal substrate, so that a light is applied from the light transmitting layer side to readout information from the pits or grooves, wherein the minimum width W of the pits or grooves and the wavelength .lambda. in air of the readout light satisfy:

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