| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide, by targeting a low-radiation film possessing three metal layers, a low-radiation film having a favorable appearance in terms of a color tone, above all unaccompanied by a reddish tint when viewed obliquely.SOLUTION: The provided low-radiation film is a low-radiation film formed atop a transparent substrate wherein the low-radiation film possesses a laminate obtained by laminating, in proper order atop the transparent substrate as dielectric layers and metal layers including Ag as a main component, a first dielectric layer, a first metal layer, a second dielectric layer, a second metal layer, a third dielectric layer, a third metal layer, and a fourth dielectric layer, wherein physical film thickness of the respective layers of the laminate are as follows: first dielectric layer: 30-50 nm; first metal layer: 7-19 nm; second dielectric layer: 65-90 nm; second metal layer: 8-20 nm; third dielectric layer: 65-90 nm; third metal layer: 9-20 nm; and fourth dielectric layer: 25-45 nm, wherein the total thickness of the respective dielectric layers of the laminate is 210-240 nm, and wherein the film thickness ratio of the second dielectric layer with respect to the third dielectric layer is confined to a range of 0.95-1.20.</p> |
