Screens to be used with a system for the magnification and...

Details Screens to be used with a system for the magnification and... Screens to be used with a system for the magnification and...

2002-05-10

2008-11-25

Amari, Alessandro (Department: 2872)

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

C359S023000, C359S458000

Reexamination Certificate

active

07457017

ABSTRACT:
The three-dimensional system discloses screens (12, 16) that produce magnified three-dimensional images (6) that can be projected before large audiences who can view said images without special glasses or viewing aids. The screens disclosed therein are active optical systems which, together with the projection optics, serve to reconstruct and present to the audience the same light waves as though the three-dimensional scene actually exists. The present invention discloses improved screens for this system as well as methods of manufacturing said improved screens.

REFERENCES:
patent: 3715154 (1973-02-01), Bestenreiner
patent: 4130337 (1978-12-01), Okoshi
patent: 4421380 (1983-12-01), McGrew
patent: 4878735 (1989-11-01), Vilums
patent: 5973807 (1999-10-01), Buchkremer et al.

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