Hologram recording/reproducing apparatus

Details Hologram recording/reproducing apparatus Hologram recording/reproducing apparatus

2008-03-17

2011-11-22

Font, Frank G (Department: 2872)

Optical: systems and elements

Holographic system or element

Fourier transform holography

Reexamination Certificate

active

08064115

ABSTRACT:
A hologram recording/reproducing apparatus includes: a coherent light source; a spatial light modulator which spatially modulates light from the coherent light source; a Fourier transform lens which concentrates light modulated by the spatial light modulator upon a hologram medium; and a two-dimensional light-receiving element array which receives light from the hologram medium. The spatial light modulator is divided into a reference light area and a signal light area, and the divergence angle of reference light emitted from the reference light area is wider than the divergence angle of signal light emitted from the signal light area.

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