| 摘要 |
<p>PURPOSE:To prevent the state to make observation hard by coloring in violet and green to the indicator and thus to improve the industrial usefulness by specifying the surface roughness in the free surface of an activation energy ray curing type resin-cured layer, the retardation value in the whole of a laminated sheet and the transmittance of visible rays. CONSTITUTION:Into the interstice between a base material sheet 1 having an optical isotropy provided or not provided with an anchor coating layer and a smoothed mold material 3, resin liquid 2a is supplied, and the resin liquid 2a is permitted to be held between them in layer-shaped relation. In the next place, by emitting activation energy rays, the held layer 2b is hardened so as to form an activation energy ray curing type resin cured layer 2. Herein, it is preferred that the surface roughness in the free surface of the curing type resin cured layer 2 is allowed to be 0.5mum or lower, the retardation value in the whole of a laminated sheet is 60nm or lower, and the transmittance of visible rays is 60% or more.</p> |
