| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laminated multilayer film having a reflective polarization function in which the hue dislocation of transmitted polarized light by an incident angle in the oblique direction to light incident in the oblique direction simultaneously while polarization performance is raised further is not seen. <P>SOLUTION: In a uniaxially oriented laminated multilayer film of at least 251 layers, first layers and second layers are laminated alternately. The first layer (i) contains (i) 5-50 mole% of a predetermined dicarboxylic acid component containing a naphthoic acid component as a dicarboxylic acid component and a dicarboxylic acid component having a phenylene group or a naphthalenediyl group and (ii) is made of a polyester containing a diol component having a 2-10C alkylene group as a diol component. The second layer is a layer made of a thermoplastic resin having an average refractive index of 1.50-1.60 and refractive index differences in the uniaxial orientation direction, its orthogonal direction, and the film thickness direction before and after the orientation of 0.05 or below. In the uniaxially oriented laminated multilayer film, as regards a P polarization component, average reflectances to the incident polarized light at incident angles 0° and 50° are at least 90%, respectively, and as regards an S polarization component, average reflectances to the incident polarized light at incident angles 0°and 50° are 15% or below, respectively. <P>COPYRIGHT: (C)2011,JPO&INPIT |
