Hologram recording device and phase mask having a diffusing...

Details Hologram recording device and phase mask having a diffusing... Hologram recording device and phase mask having a diffusing...

2006-03-03

2009-08-18

Amari, Alessandro (Department: 2872)

Optical: systems and elements

Holographic system or element

Having defined page composer

C359S022000

Reexamination Certificate

active

07576899

ABSTRACT:
A hologram recording device for recording interference fringes between reference light and signal light modulated by data displayed in a spatial modulator in a hologram recording material, the hologram recording device including a phase mask for diffusing light, the phase mask being disposed in an optical system that the signal light passes, wherein a minimum unit of a light diffusing pattern formed in the phase mask is a natural number of times a minimum unit of display data of the spatial modulator.

REFERENCES:
patent: 4837843 (1989-06-01), Owechko
patent: 5914802 (1999-06-01), Stappaerts et al.
patent: 5995251 (1999-11-01), Hesselink et al.
patent: 2005/0207313 (2005-09-01), Handschy et al.
patent: 2008/0062490 (2008-03-01), Cheng et al.

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