Both-side image film screen

Details Both-side image film screen Both-side image film screen

2008-01-29

2008-01-29

Lee, Diane I. (Department: 2851)

Optical: systems and elements

Projection screen

Embedded particles

C359S453000, C359S454000, C359S459000, C359S460000, C359S461000

Reexamination Certificate

active

07324277

ABSTRACT:
Disclosed is a double-sided image film screen including a plastic material having a high optical transmission property and a light-refracting material, made of silica, having an optical transmission property and a refractivity of 1.4˜2.5, wherein a content and a particle size of the light-refracting material and a thickness of the film screen are designated such that an image incident on the film screen by means of light projected from a projector is dividedly displayed on front and rear surfaces of the film screen, thereby displaying the image formed thereon though the front and rear surfaces thereof, increasing the visibility of the image and eliminating a hot spot generated by a projection light source of the projector. Compared to conventional screens, the double-sided image film screen is advantageous in that it displays the image through the front and rear surfaces thereof.

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