| 摘要 |
Optical glasses are described, which are useful for imaging, sensors, microscopy, medical technology, digital protection, photolithography, laser technology, wafer/chip technology, as well as telecommunication, optical communications engineering and optics/lighting in the automotive sector, with a refractive index of 1.80<=nd<=1.95 and an Abbe value from 19<=nud<=28 with excellent chemical resistance and stability to crystallization. These optical glasses have a composition, in weight. % based on oxide content, of: P2O5, 14-35; Nb2O5, 45-50; Li2O, 0-4; Na2O, 0-4; K2O, 0.5-5; BaO, 17-23; ZnO, 0.1-5; TiO2, 1-<5; ZrO2, 0-6; and Sb2O3, 0.1-2. |
