Hologram recording device

Abstract

A hologram recording device includes a light outputting unit that sequentially outputs multiple laser beams such that the laser beams are coaxially aligned, the laser beams having different wavelengths and being emitted from multiple laser beam sources, an optical system that generates a reference beam and an object beam, with which a hologram is recorded, from each of the laser beams output from the light outputting unit, and an adjusting unit that adjusts a relative position of a recording medium and a focus position of the object beam generated from each of the laser beams having different wavelengths so that the object beam is focused on a surface of the recording medium when the hologram recording device records multiple holograms in a wavelength multiplex recording by sequentially applying the object beams and the reference beams to the recording medium.

Dependencies are inferred from the claim text.