Optical sheet, optical sheet production method, surface-emitting apparatus, and liquid crystal display apparatus

摘要

An optical sheet includes a sheet body including a single translucent resin material layer having a first surface that light enters and a second surface that the light exits. The sheet body is orientationally crystallized in a first in-plane axis direction and a second in-plane axis direction orthogonal to each other and having a linear expansion coefficient of 1.0*10E−5/° C. or less in all in-plane directions. A structure surface portion that has a geometric configuration and is formed on at least one of the first surface and the second surface.

主权项

1. An optical light collecting sheet comprising:
a sheet body including a single translucent resin material layer having a first surface that light enters and a second surface that the light exits, the sheet body being orientationally crystallized in a first in-plane axis direction and a second in-plane axis direction orthogonal to each other and having a linear expansion coefficient of 1.0*10E−5/° C. or less in all in-plane directions; and a structure surface portion that has a geometric configuration and is formed on at least one of the first surface and the second surface, wherein the structure surface portion is formed on the second surface, and wherein the geometric configuration includes a prism configuration having a triangular cross section, the prism configuration having a ridge line in the first in-plane axis direction.