Projection screen assembly
First Claim
Patent Images
1. A screen assembly for projecting thereon light beam emitted from a source of light carrying an image, so as to form the image thereof, which comprises:
- a transparent plate having on one side thereof a lenticulated surface means comprising a plurality of elongated cylindrical lens elements extending in a parallel relation to each other and on the other side thereof a mat-finished surface means, wherein said lenticulated surface means diffuses the incoming light in a horizontal direction which is perpendicular to the elongated cylindrical lens elements, and said mat-finished surface means diffuses the incoming light in all directions, relative to the direction of travel of the incoming light, whereby the light projected on the screen assembly diffuses at a first predetermined angle of diffusion which is small relative to the direction of the longitudinal axis of any one of said elongated cylindrical lens elements and at a second predetermined angle of diffusion which is great relative to the direction perpendicular to the longitudinal axis of any one of said elongated cylindrical lens elements.
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Abstract
The screen assembly includes a transparent plate which has one surface formed with lenticuler lens and the other surface matted, so as to diffuse light beams projected thereon and scatter in directions toward the surroundings of the screen assemby where the observers are situated, and not in directions upwards and downwards nor sidewards of the screen assembly.
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Citations
8 Claims
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1. A screen assembly for projecting thereon light beam emitted from a source of light carrying an image, so as to form the image thereof, which comprises:
a transparent plate having on one side thereof a lenticulated surface means comprising a plurality of elongated cylindrical lens elements extending in a parallel relation to each other and on the other side thereof a mat-finished surface means, wherein said lenticulated surface means diffuses the incoming light in a horizontal direction which is perpendicular to the elongated cylindrical lens elements, and said mat-finished surface means diffuses the incoming light in all directions, relative to the direction of travel of the incoming light, whereby the light projected on the screen assembly diffuses at a first predetermined angle of diffusion which is small relative to the direction of the longitudinal axis of any one of said elongated cylindrical lens elements and at a second predetermined angle of diffusion which is great relative to the direction perpendicular to the longitudinal axis of any one of said elongated cylindrical lens elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
Specification