Patent ID: 7554706

Claim:
A holographic recording apparatus, comprising: a laser beam source; a reference optical system which guides one of branched laser beams resulting from branching a laser beam from this laser beam source to a holographic recording medium as a reference beam; an object optical system which guides the other of the branched laser beams to the holographic recording medium as an object beam; a phase code mask which is arranged in the reference optical system, has a required phase code pattern recorded as a hologram in advance, and phase-spatial-modulates the reference beam; and an amplitude spatial light modulator which is arranged in the object optical system and amplitude-spatial-modulates the object beam according to information to be recorded, wherein the phase-spatial-modulated reference beam and the amplitude-spatial-modulated object beam are projected onto the holographic recording medium to thereby perform holographic recording of the information, and the phase code pattern is angle-multiplex-recorded in the phase code mask.