STRUCTURED COMPOSITE OPTICAL FILMS
First Claim
1. An optical film comprising a first layer comprising inorganic fibers embedded within a polymer matrix, the first layer having a first structured surface comprising a brightness enhancing layer surface, wherein the first layer provides a brightness gain of at least 10% to light that propagates through the first layer.
0 Assignments
0 Petitions
Accused Products
Abstract
Optical films having structured surfaces are used, inter alia, for managing the propagation of light within a display. As displays become larger, it becomes more important that the film be reinforced so as to maintain rigidity. An optical film of the invention has a first layer comprising inorganic fibers embedded within a polymer matrix. The first layer has a structured surface to provide an optical function to light passing therethrough. The film may have various beneficial optical properties, for example, light that propagates substantially perpendicularly through the first layer may be subject to no more than a certain level of haze or light incident on the film may be subject to a minimum value of brightness gain. Various methods of manufacturing the films are described.
107 Citations
14 Claims
- 1. An optical film comprising a first layer comprising inorganic fibers embedded within a polymer matrix, the first layer having a first structured surface comprising a brightness enhancing layer surface, wherein the first layer provides a brightness gain of at least 10% to light that propagates through the first layer.
-
13. An optical film comprising a first layer comprising inorganic fibers embedded within a polymer matrix, the first layer having a first structured surface comprising a plurality of retroreflecting elements, wherein the first layer provides a brightness gain of at least 10% to light that propagates through the first layer.
-
14. An optical film comprising a first layer comprising inorganic fibers embedded within a polymer matrix, the first layer having a first structured surface comprising one or more lenses, wherein the first layer provides a brightness gain of at least 10% to light that propagates through the first layer.
Specification