Light control film
First Claim
1. A light control film, comprising:
- a first major surface and an opposing second major surface;
a light absorptive material extending between the first and second major surfaces; and
a plurality of optically-isolated light transmissive cavities at least partially extending between the first and second major surfaces,wherein each of the plurality of cavities comprise a first aperture coincident with the first major surface, a second aperture adjacent the second major surface, and at least one side wall extending between the first aperture and the second aperture, and furtherwherein the second aperture and the second major surface are separated by the light absorptive material having a land thickness greater than 0.1 microns.
1 Assignment
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Accused Products
Abstract
The present disclosure provides a light control film that is capable of transmitting light, or allowing a viewer to observe information, only within a viewing region centered around the normal (perpendicular line) to a surface. The light control film generally blocks information or light outside of this viewing region, and provides security in all directions including right-and-left and up-and-down of the film. The light control film includes a plurality of light-transmissive cavities that are surrounded by a light absorbing material, such that each of the plurality of cavities is optically isolated from adjacent cavities. Each of the light-transmissive cavities effectively block light which enters the cavity outside of a viewing (that is, cutoff) angle.
51 Citations
20 Claims
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1. A light control film, comprising:
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a first major surface and an opposing second major surface; a light absorptive material extending between the first and second major surfaces; and a plurality of optically-isolated light transmissive cavities at least partially extending between the first and second major surfaces, wherein each of the plurality of cavities comprise a first aperture coincident with the first major surface, a second aperture adjacent the second major surface, and at least one side wall extending between the first aperture and the second aperture, and further wherein the second aperture and the second major surface are separated by the light absorptive material having a land thickness greater than 0.1 microns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification