Depth enhancing screen

Optical: systems and elements – Projection screen – Curved

Reexamination Certificate

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Details

C359S743000, C359S900000

Reexamination Certificate

active

07990613

ABSTRACT:
The present disclosure relates to a depth-enhancing screen for producing a simulated 3D image. The screen comprises a multi-curved Fresnel lens which when viewed in cross-section along the or each longest line linking two points on the edge of the lens, has a curved cross-section with an apex in the central region of the lens, and wherein each end of the curve flattens before it reaches the edge of the lens.

REFERENCES:
patent: 5583702 (1996-12-01), Cintra
patent: 5790322 (1998-08-01), Kameda et al.
patent: 6313946 (2001-11-01), Petitto et al.
patent: 6678098 (2004-01-01), Amery et al.
patent: 7633684 (2009-12-01), Lo
patent: 2010/0007846 (2010-01-01), Fermigier et al.
Building a Collimated Display for PC Games; http://www.rickleephoto.com/rlcoll.htm; first posted circa 1999.

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