摘要:
A process for preparing blazed hologram suitable for mass-production which comprises fabricating a glass or metal plate (5) having a surface of serrated cross section, disposing the glass or metal plate in an injection mold (6) to allow the surface of serrated cross section to constitute an inner surface of the mold, injecting an acrylic resin in molten form into the mold under a specific molding pressure, and removing a molded acrylic resin (10) from the glass plate or metal plate to obtain an acrylic blazed hologram.
摘要:
A magneto-optic memory device comprises a substrate (11), a dielectric layer (12) and a layer of an optical memory recording medium (13) the dielectric layer is sandwiched between the substrate and the recording medium layer, the recording medium layer (15) is formed of a nitride material, and a reflection layer is provided to the side of the recording medium layer remote from the dielectric layer. This arrangement prevents the recording medium from being oxidized, and stabilizes coercive force characteristics and information recording characteristics of the recording medium.