Copper content glass, being the near infrared absorption component and the copper content

摘要

PROBLEM TO BE SOLVED: To inexpensively provide near-infrared absorbing glass capable of performing good color sensitivity correction, a near-infrared absorbing element comprising the glass, and a near-infrared absorbing filter equipped with the element.;SOLUTION: The copper-containing glass comprises fluorophosphate glass or phosphate glass and contains at least 0.1 wt.% copper (in terms of CuO), 0.005-0.5 wt.% iron (in terms of Fe₂O₃), 0.01-1 wt.% antimony (in terms of Sb₂O₃), and no arsenic.;COPYRIGHT: (C)2004,JPO