PIEZO ANGLE MULTIPLEXING TYPE HOLOGRAM DATA STORAGE SYSTEM AND METHOD FOR FABRICATING COMPLEX LAYER PIEZO-ELECTRIC PHOTO DISPLACEMENT DEVICE

摘要

PURPOSE: A piezo angle multiplexing type hologram data storage system is provided to improve a record density by finely performing an angle adjustment. CONSTITUTION: The piezo angle multiplexing type hologram data storage system comprises: a mirror(30) installed on a beam path of a reference beam from a beam splitter(20), wherein the beam splitter splits a laser beam into a reference beam(12) and an object beam(13); a plurality of piezo layers(110, 111, 112, 113, 114, 115) piled between hologram record medium(60) for recording hologram image and in a longitudinal direction where piezo coefficient is in a large order or in a small order; a complex layer piezo photo displacement device(100) having upper and lower electrodes(116, 117) which are formed in both sides, for changing a slope of a reflection plane by use of an applied voltage, wherein a base panel(118) is piled on a surface of the upper electrode.