| 摘要 |
<p>A polarizing glass wherein the extinction ratio measured at a short distance is improved. Specifically disclosed is a polarizing glass containing shape-anisotropic metal particles oriented and dispersed in a glass base. In percentage by weight relative to the entire glass base, 0.40-0.85 wt% of Cl is contained in the glass base. The polarizing glass has a Vickers hardness of not less than 360 but not more than 420 or a Knoop hardness of not less than 400 but not more than 495, or at least one additional component selected from the group consisting of Y2O3, La2O3, V2O3, Ta2O3, WO3 and Nb2O5 is contained in the glass base. The amount of each additional component contained therein is within the range of 0.05-4% by mole, and if two or more additional components are selected, the total amount of the additional components is not more than 6% by mole.</p> |
