| 摘要 |
A hologram recording device illuminates with a recording beam (S) a hologram recording medium (B), and illuminates with a reference beam (R) a region illuminated with the recording beam (p) while variably controlling the incident angle regarding the hologram recording medium (B) whereby holograms are recorded on the illuminated region (p) in multiple by interference of the recording beam (S) and the reference beam (R). The device includes an incident angle variable controller for variably controlling the incident angle of the reference beam (R) in a predetermined range. The hologram recording medium (B) has such characteristics that its recording sensitivity degrades as the incoming light amount increases. The incident angle variable controller changes the incident angle of the reference beam (R) from a larger angle to a smaller angle.
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