| 摘要 |
Provided is a multilayer reflector about which a complicated step is not required when the molecular alignment of a retardation film is partially relaxed to form a latent image of authentication information, and about which the latent image is not made visible by the generation of unevenness in the surface. A multilayer reflector (1) has a retardation film (10) in which the phase difference ”nd 1 to an observation wavelength » is set to be m × »/4 - »/16 ‰ ”nd 1 ‰ m × »/4 + »/16 wherein m is a positive odd number, and a metallic reflector (11) laminated on the rear face side of this retardation film (10), wherein an authentication region (10a) where predetermined authentication information is beforehand formed in the retardation film (10) is formed to give a phase difference ”nd 2 set to be n × »/4 - »/8 ‰ ”nd 2 ‰ n × »/4 + »/8 wherein n is 0 or a positive even number provided that n < m, and further a light diffusing layer (12) is formed on the front face side of the retardation film (10). |
