| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hologram recording medium of higher quality by optimizing the structure of a hologram recording medium in which a recording layer is formed by injecting a recording layer material through a center hole of one substrate of two substrates. <P>SOLUTION: The hologram recording medium comprises a disk type first substrate, a disk type second substrate having a center through hole, a recording layer disposed between the first and second substrates, and a projecting member disposed on the center axis of the first substrate, wherein the top end of the projecting member opposes to the second substrate and is at a position nearer to the second substrate side than the surface of the first substrate in the side opposing to the second substrate. <P>COPYRIGHT: (C)2007,JPO&INPIT |
