Structure of light control membrane
AssigneeOptimax Technology Corporation
InventorsTung-Lung Li, Long-Hai Wu, Ta-Wang Lai
Life of this patent
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Abstract
A structure of light control membrane is mainly comprised of a single layer of light-conducting membrane as a substrate, wherein the surface of the light-conducting membrane particularly has an opaque zone in spiral shape or multi-layer circular rippling wave shape. When a user views an image through the light-conducting membrane, the opaque zone in spiral shape or multi-layer circular rippling wave shape will make the image visible only within a specific range of viewing angle while, out of the specific range of viewing angle, the image is invisible.
Claims6
1-8. (canceled)
A light control membrane structure, which comprises:
- a light-conducting membrane, which comprises transparent material, and which has a surface extending in horizontal direction and a thickness perpendicular to the surface;
- and
- at least one opaque zone formed on the light-conducting membrane, and which has an vertical portion extending along the thickness and a horizontal portion parallel to the surface;
- wherein the horizontal portion of the opaque zone extends along on the surface horizontally and expands at least 360 degrees, so that at least one opaque zone in circular shape is formed on the surface of the light-conducting membrane.
Dependencies are inferred from the claim text.