Image display screen having wide vertical and horizontal...

Details Image display screen having wide vertical and horizontal... Image display screen having wide vertical and horizontal...

2007-06-19

2007-06-19

Perkey, W. B. (Department: 2851)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

C359S619000, C359S453000, C359S460000, C348S744000

Reexamination Certificate

active

10874700

ABSTRACT:
Provided is an image display screen having wide horizontal and vertical viewing angles and a projection television including the same. The image display screen includes a Fresnel screen, a first lenticular screen that widens a horizontal viewing angle and a second lenticular screen including a first portion that widens a vertical viewing angle and a second portion that prevents degradation of contrast due to external light, and a protective screen. The second lenticular screen and the protective screen can be replaced by an integrated screen or a composite screen having the characteristics of both. In addition, a pattern may be formed on the rear surface of the Fresnel screen to perform the same function as the first portion.

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