| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to continuously execute the mold parting of a lens sheet having a reverse mold parting portion. SOLUTION: When the lens sheet 2 is a circular Fresnel lens sheet, the lens sheet 2 side is curved up to the center 1a of a forming mold 1 by a mold parting means 3, such as a mold parting roller, by which the lens sheet 2 is peeled from the forming mold 1. When the lens sheet 2 has the reverse mold parting portion 2a, the curving of the lens sheet 2 is made gentler by moving, etc., of the mold parting means 3 so that the lens sheet 2 is peeled by utilizing the curving on the forming mold 1 side. |
