Abstract: In a method for manufacturing a light control panel, a large number of strip-shaped reflective surfaces are formed with a constant pitch in a direction that is perpendicular to a thickness direction of the light control panel. The method includes a stacking step of directly stacking a large number of elongated flat plate-shaped glass pieces one on top of another without interposing an adhesive between the glass pieces, thereby producing a glass stack, which has a flat plate-like shape and in which the large number of glass pieces are lined up in a direction that is perpendicular to a thickness direction of the glass stack; and an integrating step of integrating the large number of Mass pieces of the glass stack. Pieces of transparent glass with no reflective films for forming the strip-shaped reflective surfaces being stacked thereon are used as the glass pieces.