| 摘要 |
PROBLEM TO BE SOLVED: To provide imprint molded products of an optical film attaining high-brightness property by eliminating brightness unevenness using a mold. SOLUTION: In the mold in which a plurality of linear grooves lines parallel adjacent to each other on the surface thereof, crosssectional recess shapes in an optional crosssection perpendicular to the longitudinal direction of the respective grooves form parts of linear symmetrical curved lines in which the angle of the acute angle made between the tangent line at the point on the curved line and the line parallel to the linear symmetrical axis as departing from the linear symmetric line gradually decreases, the linear symmetrical axes of the respective crosssectional recess shapes are parallel, at least one angle in all of the cross point sections is at most 25°, each of the same is different, and the angle of the cross point section changes as the crosssection moves along the longitudinal direction of the grooves in the optional adjacent grooves, provided that the angle of the acute angle made between the tangent line in the cross point section of one crosssectional recess shape and the straight line parallel to the linear symmetrical axis isθ<SB>1</SB>and the angle of the acute angle made between the tangent line in the cross point section of the other crosssectional recess shape and the straight line parallel to the linear symmetrical axis isθ<SB>2</SB>in the cross point section of the crosssectional recess shapes of the adjacent grooves. COPYRIGHT: (C)2010,JPO&INPIT |
