| 摘要 |
PROBLEM TO BE SOLVED: To obtain an ultraviolet/infrared/X-ray screening glass having no restriction related to surface shape, high transparency and no discoloration, causing neither reduction in function by surface damage and change with time nor deterioration of transparency, having excellent durability. SOLUTION: A glass raw material powdery or granular material is mixed with 0.1-25 wt.% of powder of transparent electroconductive metal oxide, heated, melted and cooled to give glass having ultraviolet/infrared/X-ray screening function and electric conductivity.
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