| 摘要 |
<p>An optical information recording medium (74) includes a recording layer (93) that records information, a reflective layer (95) that reflects a light beam transmitted through the recording layer (93), and a protective layer (94) that is provided between the recording layer (93) and the reflective layer (95) and has thickness set such that an interference pattern formed by interference between the light beam not yet reflected by the reflective layer (95) and the light beam reflected by the reflective layer (95) is formed in the protective layer itself. Thus, when a light beam that changes to recording signal light or reference light is irradiated, information recording noise caused by interference between the irradiated light beam and the light beam reflected by the reflective layer (95) is effectively controlled.</p> |
