Patent Number: 7,535,642

Title: Light control sheet and surface light source using the same

Abstract: A light control sheet comprises at least a light diffusing film and a prism sheet, wherein the light diffusing film has a light diffusing surface on one side and a rough surface on the other side, the prism sheet has a prism surface on one side and a smooth surface on the other side, the smooth surface has a smooth layer comprising at least a comb polymer, and the rough surface of the light diffusing film and the smooth surface of the prism sheet face each other. A light control sheet comprises at least a light diffusing film and a prism sheet, wherein the light diffusing film has a light diffusing surface on one side and a smooth surface on the other side, the smooth surface has a smooth layer comprising at least a comb polymer, the prism sheet has a prism surface on one side and a rough surface on the other side, and the smooth surface of the light diffusing film and the rough surface of the prism sheet face each other.

Inventors: Toshima; Yasumaro (Saitama, JP), Kurishima; Susumu (Saitama, JP)

Assignee: Kimoto Co., Ltd.

International Classification: G02B 13/20 (20060101)

Expiration Date: 2021-05-19 0:00:00