Rear-projection screen
First Claim
1. A transparent rear-projection screen having a rear side comprising lenses for paralleling light coming from behind the screen, and having a front side comprising rectilinear, convex lenses wherein at essentially a mid-point of a plurality of adjacent convex lenses, projections are provided each of which projections has opposite side surfaces provided with light diffusing means for diffusing light incident thereto.
1 Assignment
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Accused Products
Abstract
A transparent, rear-light projection screen that has lenses on its back side facing the projectors for paralleling light from the projectors. The screen on its front side has upright, forerunning asymmetric cylinder lenses with partially reflecting projections having light-refractive surfaces, facing outwardly from the front side and opposite to the direction from which the paralleled light originates from behind. The projection screen improves the color contrast and increases the projected light when the screen is viewed from a side direction.
3 Citations
21 Claims
- 1. A transparent rear-projection screen having a rear side comprising lenses for paralleling light coming from behind the screen, and having a front side comprising rectilinear, convex lenses wherein at essentially a mid-point of a plurality of adjacent convex lenses, projections are provided each of which projections has opposite side surfaces provided with light diffusing means for diffusing light incident thereto.
- 7. A transparent rear-projection screen having a rear side and a front side, wherein said rear side comprises lenses for paralleling light received by the rear side of the screen, and the front side comprises rectilinear, convex lenses having projections at about a mid-point of adjacent convex lenses, each of the projections having opposite side surfaces provided with light diffusing means for diffusing light incident thereto.
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15. A transparent rear-projection screen having a rear side comprising lenses for paralleling light coming from behind the screen, and having a front side comprising a plurality of convex lenses positioned one next to the other in a rectilinear manner, each convex lens comprising:
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(a) a first convex lens surface having a low end attached to an adjacent convex lens, and a high end attached to a base of a mid-point lens projection, and (b) a second convex lens surface having a low end attached to an adjacent convex lens and a high end attached to a base of a mid projection lens, and (c) a mid-lens projection having a base attached to the high side of said first convex lens and the high side of said second convex lens, wherein said first convex lens and said second convex lens are symmetrical with respect to said mid-lens projection. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification