| 摘要 |
PROBLEM TO BE SOLVED: To provide aluminophosphate glass for filter glass having a low transmission in the near infrared range with a steep absorption edge, as well as a very uniform high transparency in the visible range and excellent chemical durability under conditions of exposure to elevated temperature and high relative humidity. SOLUTION: The glass comprises, in percent by weight on an oxide basis: P<SB>2</SB>O<SB>5</SB>of 65-80, Al<SB>2</SB>O<SB>3</SB>of 4-20, B<SB>2</SB>O<SB>3</SB>of 0-<5.5, La<SB>2</SB>O<SB>3</SB>of 0-2.1, Y<SB>2</SB>O<SB>3</SB>of 0-2.1, SiO<SB>2</SB>of 0-3, Li<SB>2</SB>O of >2-12.5, Na<SB>2</SB>O of 0-6, K<SB>2</SB>O of 0-4, Rb<SB>2</SB>O of 0-2.5, Cs<SB>2</SB>O of 0-2.5, MgO of 0-7.9, CaO of 0-5, SrO of 0-5, BaO of 0-10, ZnO of 0-8, ZrO<SB>2</SB>of 0-5, CuO of 5-15 and V<SB>2</SB>O<SB>5</SB>of 0-0.5, wherein the sum of alkaline-earth metal oxides + ZnO (ΣR'O) is <18 and the sum of CuO+V<SB>2</SB>O<SB>5</SB>is 5-15. COPYRIGHT: (C)2007,JPO&INPIT
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