Method of producing a big size holographic projection screen...

Details Method of producing a big size holographic projection screen... Method of producing a big size holographic projection screen...

2005-06-28

2005-06-28

Mahoney, Christopher (Department: 2851)

Optical: systems and elements

Holographic system or element

Having multiple object beam or diffuse object illumination

C359S443000

Reexamination Certificate

active

06912074

ABSTRACT:
A method of producing a big size holographic screen for projection of the stereoscopic or multiview 3-dimensional color images is proposed, where a narrow and elongate slit-shaped diffuser is recorded on the hologram as an object to ensure the well defined viewing zone forming in course of the image projection. As compared with the previous art the diffuser length is increased by the calculated value to provide undistorted color reproduction on whole screen surface. The parameters required for the recording of the holographic screen, including the position of a photoplate with respect to the diffuser, the position of a reference wave point source with respect to the diffuser, the distance from which an image is observed and so on are determined by consideration of the phase relationships between the reference, object, projector and reconstructed waves on the photoplate surface.

REFERENCES:
patent: 4799739 (1989-01-01), Newswanger
patent: 6211977 (2001-04-01), Son et al.
patent: 6735001 (2004-05-01), Nakashima
patent: 2001/0001579 (2001-05-01), Kanda et al.

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