| 摘要 |
<p>An optical anti-reflective film includes five layers are laminated on the surface of a substrate, wherein the first, third and fifth layers as counted from the substrate side consist of a low-refractive-index material, the second and fourth layers consist of a high-refractive-index material, and the sum of the optical film-thicknesses of the first, second and third layers is in the range of 0.8 lambda 0 to 1.2 lambda 0 inclusive, and the optical film-thicknesses of the fourth and fifth layers are respectively in the range of 0.2 lambda 0 to 0.3 lambda 0 inclusive, where lambda 0 is a selected wavelength of light with which the film may be used, desirable in the range of 150 to 300 nm. <IMAGE></p> |
