OPTICAL SHEET AND METHOD FOR MANUFACTURING THE SAME

摘要

The optical sheet according to the present invention includes a first layer containing a polycarbonate resin and a second layer containing an amorphous polyamide resin, the first layer and the second layer being layered by coextrusion molding. The first layer and the second layer are peelable from each other; and a surface of at least one of the first layer and the second layer has a fine uneven shape formed thereat. Such an optical sheet including a plurality of layers can make the entirety sheet thick at the time of melt extrusion molding, and therefore the layered body during the molding can hold a sufficient amount of heat. This improves the transferability of the fine uneven structure. In addition, the layers may be peeled off so that one of the layers is used. In this case, the optical sheet can be made thinner.

主权项

1. An optical sheet including a first layer comprising a polycarbonate resin and a second layer comprising an amorphous polyamide resin, the first layer and the second layer being layered by coextrusion molding, wherein:
the first layer and the second layer are peelable from each other at an interface therebetween; and at least one of a surface of the first layer not a surface as the interface, and a surface of the second layer not a surface as the interface, has a fine uneven shape formed thereat.