| 摘要 |
Copper, cadmium, silver and halogen-containing glass compositions suitable for the production of photochromic glass articles comprising these constituents in a separated, particulate photochromic phase are described. The glasses exhibit a characteristic copper-cadmium halide absorption inflection in the near ultraviolet, and are surface-darkenable on exposure to ultraviolet and short-wavelength visible light. However, they also exhibit optical bleaching characteristics and a variety of dark-state colors not previously obtained in surface darkening glasses. |
