Thin-plate storage container
First Claim
1. A light control film having a rough surface pattern defining, for each cross-section perpendicular to a base plane of the film, a profile curve along an edge contoured by the rough surface pattern, wherein for substantially all cross-sections perpendicular to a base plane of the film, the profile curve has an average of absolute values of slope to said base plane θ
-
ave which is at least 20° and
no greater than 75°
.
0 Assignments
0 Petitions
Accused Products
Abstract
A light control film having a refractive index n and an uneven, irregular surface pattern provides a reasonable level of light diffusion without a glare problem provided, for any cross-section perpendicular to the base plane of the film, the average of absolute values of slope θave of a curve along the edge of the cross-section contoured by the rough surface pattern (profile curve) is at least 78-34 n degrees and no higher than 118-34 n degrees, or the average of absolute values of slope θave of a profile curve to the length L1 of a straight line defined by the intersection of the base plane and the cross-section satisfies the following formula (3) or (4) for substantially all cross-sections.
θave÷Lr×n2≧40 (3)
50≦θave×Lr×n2≦135 (4)
-
Citations
20 Claims
-
1. A light control film having a rough surface pattern defining, for each cross-section perpendicular to a base plane of the film, a profile curve along an edge contoured by the rough surface pattern, wherein for substantially all cross-sections perpendicular to a base plane of the film, the profile curve has an average of absolute values of slope to said base plane θ
-
ave which is at least 20° and
no greater than 75°
. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16, 17)
-
ave which is at least 20° and
-
2. A light control film including a surface layer, said surface layer having a rough surface pattern defining, for each cross-section perpendicular to a base plane of the film, a profile curve along an edge contoured by the rough surface pattern, said surface layer formed of a material having a refractive index n, wherein for substantially all cross sections perpendicular to a base plane of the film the profile curve has an average of absolute values of slope to said base plane θ
- ave which is at least 78-34 n degrees and no greater than 118-34 n degrees.
- View Dependent Claims (13, 15, 18, 19, 20)
Specification