Fresnel lens having reduced distortions

Details Fresnel lens having reduced distortions Fresnel lens having reduced distortions

2007-08-21

2007-08-21

Perkey, W. B. (Department: 2851)

Optical: systems and elements

Projection screen

Rear projection screen

C359S449000, C359S450000, C359S456000, C359S457000, C353S077000

Reexamination Certificate

active

10754092

ABSTRACT:
A display device for displaying images in a rear projection display device is provided. The display device may include, amongst other structure, a screen including a lens portion and a frame portion. A tensioner may be operatively associated with the screen and may be adapted to adjust the frame portion to maintain a predetermined tautness in the lens portion.

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