Optical data storage disc

Details Optical data storage disc Optical data storage disc

G - Physics

11

B

G11B 7/24 (2006.01) G11B 7/26 (2006.01) G11B 23/40 (2006.01)

Patent

CA 2249255

An optical data storage disc comprising a first component disc (10) formed over one side with a pattern of indentations defining digital data, the indented side of the first component disc being provided with a reflective coating (11), and a second component disc (12) bonded to the indented side of the said component disc. The second component disc carries a surface relief pattern which defines a holographic or other optically variable image.

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