| 摘要 |
PROBLEM TO BE SOLVED: To provide a product having a birefringent pattern, observing information on the opposite side from the observation side, and developing a latent image into a visible image by one sheet polarizer.SOLUTION: This product 101 includes a patterned optical anisotropic layer having two or more areas different in birefringent like a pattern. The article further includes a semi-transparent and semi-reflecting layer 13 having 30-95% light transmittance and 30-95% reflectance. |
