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US07091145B2 Lead-free and preferably arsenic-free lanthanum heavy flint glass 有权
无铅，优选无砷镧重的火石玻璃

  • Patent Title: Lead-free and preferably arsenic-free lanthanum heavy flint glass
  • Patent Title (中): 无铅，优选无砷镧重的火石玻璃
  • Application No.: US10462451
    Application Date: 2003-06-16
  • Publication No.: US07091145B2
    Publication Date: 2006-08-15
  • Inventor: Silke Wolff , Ute Woelfel
  • Applicant: Silke Wolff , Ute Woelfel
  • Applicant Address: DE Mainz
  • Assignee: Schott AG
  • Current Assignee: Schott AG
  • Current Assignee Address: DE Mainz
  • Agent Michael J. Striker
  • Priority: DE10227494 20020619
  • Main IPC: C03C3/068
  • IPC: C03C3/068 ;  C03C3/066
Lead-free and preferably arsenic-free lanthanum heavy flint glass
Abstract:
The lead-free and arsenic-free optical glass has a refractive index nd of 1.84≦nd≦1.96 and an Abbé number νd of 27≦νd≦36, with good chemical resistance, excellent crystallization resistance and the following composition (in % by weight based on oxide): SiO2, 1 to 8, B2O3, 13 to 19.5, La2O3, 34 to 50; MgO, 0 to 6, CaO, 0 to 6, BaO, 0 to 6, ZnO, 0 to 9 with ΣMO, 1 to 10; and TiO2, 4 to 15, ZrO2, 0 to 11, Nb2O5, 6 to 14.5. In addition, the glass according to the invention, as well as having a maximum alkali metal oxide content of 10% by weight, may also contain standard refining agents other than arsenic. The glass according to the invention is used in imaging, projection, telecommunications, optical communication and/or laser technology.
Abstract(Chinese):

无铅和无砷的光学玻璃具有1.84的折射率n = 1.96，并且Abbé数nu < 具有良好的耐化学性，优异的耐结晶性和以下组成（以氧化物为基准的重量％）：SiO 2 ，1至8，B 2 O 3，13至19.5，La 2 O 3 3，34至50 ; MgO，0〜6，CaO，0〜6，BaO，0〜6，ZnO，0〜9，SigmaMO，1〜10; 和TiO 2，4〜15，ZrO 2，0〜11，Nb 2 O 5，6〜 14.5。 此外，根据本发明的玻璃以及具有10重量％的最大碱金属氧化物含量也可以含有除砷以外的标准澄清剂。 根据本发明的玻璃用于成像，投影，电信，光通信和/或激光技术。

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