Patent ID: 8649077

Claim:
A hologram replicating device, comprising: a hologram recording medium that includes a photosensitive material; a hologram master that is brought into close contact with a surface of the hologram recording medium directly or with a refractive index adjustor therebetween, an image of the hologram master to be replicated onto the hologram recording medium; a spatial light modulation element that modulates a laser beam in accordance with additional information to generate a modulated light, the additional information to be recorded on the hologram recording medium with the image of the hologram master, the additional information being separate from the image of the hologram master, and the additional information being information observable by a user once recorded on the hologram recording medium; and an image formation optical system that irradiates the hologram recording medium, via the hologram master, with the modulated light from the spatial light modulation element, wherein, the hologram replicating device is configured such that the hologram recording medium is simultaneously irradiated with reference light for replication of the image of the hologram master and the modulated light from the spatial light modulation element such that the image of the hologram master and the additional information are recorded on the hologram recording medium, the additional information being recorded on the hologram recording medium in a hologram area in which the image of the hologram master is recorded so that the hologram area includes both a replicated image of the hologram master and the additional information, and the additional information is observable by the user independently from the replicated image of the hologram master.