Screen, optical film, and method of manufacturing an optical...

Details Screen, optical film, and method of manufacturing an optical... Screen, optical film, and method of manufacturing an optical...

2007-03-13

2007-03-13

Perkey, W. B. (Department: 2851)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

C359S452000, C359S456000

Reexamination Certificate

active

11384614

ABSTRACT:
There is provided a screen, which, with a simple configuration, is capable of effectively utilizing light projected thereon and realizing an even luminance distribution on the screen. This screen has a diffusion layer whose diffusion characteristic expressed as a luminance distribution with respect to a scattering angle of incident light incident at an angle of 0° is varied such that the peak position of the luminance distribution is shifted towards a greater value of scattering angle in the direction of the central portion of the screen the greater the distance from the central portion of the screen is. The present invention also provides an optical film suitable for use in such a screen, and a manufacturing method therefor.

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