| 摘要 |
An optical information recording medium, on which information is recorded by interference of light beams, includes a recording layer in which the information is recorded; a reflective layer that reflects a light beam transmitted through the recording layer; and a protective layer that is provided between the recording layer and the reflective layer and has a thickness set such that an interference pattern formed by interference between the light beam not yet reflected by the reflective layer and the light beam reflected by the reflective layer is formed in the protective layer.
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