Front projection type screen

Details Front projection type screen Front projection type screen

2005-01-18

2005-01-18

Mahoney, Christopher (Department: 2851)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural reflecting areas

Reexamination Certificate

active

06844969

ABSTRACT:
A front projection type screen includes a transparent base; a diffusion member formed on one surface of the transparent base; and a retroreflection prism array formed on another surface of the transparent base. Thus, a wide angle of visibility can be secured in a horizontal direction while an angle of visibility in a vertical direction is limited to a narrow scope. Also, a wide viewing angle can be achieved and high efficiency and brightness of light may be obtained.

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