Patent ID: 8804222

Claim:
A method of replicating a hologram, comprising: bringing a hologram master adjacent a surface of a hologram recording medium directly or with a refractive index adjustor therebetween, the hologram recording medium including a photosensitive material; modulating a laser beam in accordance with additional information by using a spatial light modulation element and directing the modulated laser beam light onto a side of the hologram master facing away from the hologram recording medium; and recording an image of the hologram master and the additional information on the hologram recording medium by irradiating the hologram recording medium with the modulated laser beam light directed onto the side of the hologram master facing away from the hologram recording medium while simultaneously irradiating the hologram recording medium with reference light for replication of the image of the hologram master, the reference light being incident on a side of the hologram recording medium facing away from the hologram master.