METHOD FOR COPYING AND FABRICATING DOUBLE SIDE DVD-COMPATIBLE HOLOGRAPHIC ROM DISK AND DISK STRUCTURE

摘要

The present invention relates to a double-sided DVD -compatible clone of holographic ROM disk / preparation and holographic disk structure will . That is , the present invention proposes a DVD compatible holographic romyong sided disk structure to extend the conventional holographic disk recording capacity compared to single-sided to double and increasing the utilization of the disc , also depending on the laser wavelength in the structure of a DVD -compatible holographic disk selectively transmitting or by reducing the installation dichroic reflecting layer to replicate the sex data of the holographic disk , and a manufacturing process having a reflection function as a first step in a two-phase , alone increase the replication and the production yield of the graphic ROM disk , the disk manufacturing cost can reduce .