Patent ID: 6366368
Filing Date: 2002-04-02
Classification: G03H

Abstract:
A hologram forming apparatus for forming a hologram for reproducing a three-dimensional image by recording an interference pattern for generating reproduction light associated with a desired three-dimensional image when illuminated with reference light for reproduction in a recording medium in which information is recorded utilizing holography, comprising:a head for illuminating a part of the recording medium with a plurality of beams of recording light for forming a part of the interference pattern to record the part of the interference pattern; position change means for changing the relative positional relationship between the head and the recording medium; position control means for controlling the positions of the plurality of beams of recording light relative to the recording medium based on return light from the recording medium generated when the recording medium is illuminated with the beams of recording light; and a controller for controlling the head and the position control means so that an operation of recording the part of the interference pattern on the part of the recording medium is performed a plurality of times while changing the relative positional relationship between the head and the recording medium, thereby forming a hologram.