MULTILAYERED OPTICAL FILM

摘要: PURPOSE:To relatively easily display pictures, characters, marks, etc., by providing parts formed to the film thickness deviating from an optical of 1/4 wavelength on thin films. CONSTITUTION:At least one layer films multilayered consisting >=2 layers alternately laminated with high-refractive index 11, 13 having lambda0/4 (lambda0) light desired be reflected and low-refractive 12, 14 in this order have for deviated lambda0/4. The rays a center at lambda0 are effectively visible almost transmitted through transparent substrate such if is irradiated light. However, provided or and, therefore, certain lambda1 among partly displayed.