| 摘要 |
An optical information recording medium provided with a hologram is disclosed. The optical medium comprises a recording layer formed on one surface of a first substrate, and a semipermeable reflective layer formed on the recording layer. The optical medium further comprises a second transmittance substrate bonded to the first transmittance substrate on the side where the recording layer and the semipermeable reflective layer are provided, a heat-generating layer formed on the second transmittance substrate, and a reflective layer formed on the heat-generating layer and formed with pixels of a first hologram by being transformed in association with transformation of the heat-generating layer. The reflective layer at least includes pixels of a second hologram formed of concavities and convexities in the direction of the thickness thereof. Accordingly, the hologram is utilized for preventing the falsification or the ill-usage even for a small-amount multi-product application.
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