PURPOSE: To freely combine a transparent-resin sheet and the components of a light diffusing agent and to reduce cost by embedding or sticking a cloth, wherein the polygonal columnar fibers consisting of a transparent org. or inorg. material are orderly arranged, in or on a transparent-resin sheet.
CONSTITUTION: A cloth, wherein polygonal columnar fibers consisting of at least one kind of transparent org. or inorg. material are arranged orderly, e.g. in the same direction, is embedded in or or stuck on a transparent-resin sheet. A light control sheet is obtained by sticking a cloth 4 formed by arranging 10 pts.wt. of polygonal columnar, e.g. triangular columnar, acrylic fibers 2 as a light diffusing agent in the same longitudinal direction, and the polycarbonate fibers 3 having the same composition as a polycarbonate-resin sheet 1 in the same lateral direction on a transparent-resin sheet, e.g. 100 pts.wt. of the polycarbonate-resin sheet 1. At this time, the length of one side a1 of the acrylic fiber 2 is controlled to 10μm. Further, the acrylic fibers 2 can be arranged either in the longitudinal direction or in the lateral direction.
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