| 摘要 |
A transparent substrate (especially glass) with a stack of thin layers (20) comprising 3 layers of silver (Ag1, Ag2, Ag3) each grouped with a layer of titanium dioxide (21), a layer of metal oxide (22) and a surface coating (23), in which (22) is zinc oxide, (23) is a sacrificial metal and there is a metal oxide-containing anti-reflective coating (24) on the outer layer of silver (Ag3). - Independent claims are also included for - (1) an electromagnetic screening filter as described above, with a light transmission of 45-55%, a transmission purity of less than 10%, a reflection of less than 5 (preferably less than 4) %, blue-violet as the principal reflection color with a purity of less than 20%, and blue as the principal transmission color - (2) a viewing screen of the plasma type with at least one substrate or filter as described above on the front |
