RED GLASS LENS FOR SPECTACLES, SPECTACLES, FILTER GLASS LENS FOR PHOTOGRAPHING CAMERA, AND METHOD FOR MANUFACTURING GLASS LENS

摘要

PROBLEM TO BE SOLVED: To provide glass lenses for spectacles and spectacles which develop red without containing lead and reduce UV transmittance while ensuring visibility, or to provide a filter glass lens for a photographing camera which reduces UV transmittance.;SOLUTION: Red glass lenses are provided which contain 40-80 wt.% SiO₂, 0.001-0.1 wt.% Au, 0.001-0.05 wt.% SnO or SnO₂, 0.1-1 wt.% CeO₂ and 0.0001-0.001 wt.% CoO. When the red glass lenses are used as glass lenses for spectacles, it is preferable that one or more layers selected from a color coat layer, an antireflection film layer, an antifogging film layer and a metal vapor-deposited film layer are laminated on each lens.;COPYRIGHT: (C)2005,JPO&NCIPI