GENERATION METHOD FOR COMPLEX AMPLITUDE IN-LINE HOLOGRAM AND IMAGE RECORDING DEVICE USING SAID METHOD

摘要

Disclosed are a generation method for generating a complex amplitude in-line hologram and an image recording device using said method, wherein it is possible to realize high-speed processing and high-speed recording from a single off-axis hologram without limiting the spatial frequency band and without creating errors from interpolation, and the like.;The complex amplitude in-line hologram (J) is generated by performing the following in order: the acquisition of data for one off-axis hologram (I) obtained by means of off-axis holography, and for an off-axis reference light (R) used for obtaining the hologram (I) (S1); the setting of a reconstruction in-line reference light (R') (S2); a modulation process for performing spatial heterodyne modulation on the hologram (I) on the basis of the phases of the reference lights (R, R') (S3); and a filtering process for performing spatial frequency filtering on the hologram modulated by the modulation process (S4).;Because spatial sampling is not performed, the limits on the viewing angle (Ψ) are relaxed.