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    • 14. 发明申请
    • Optical glass and process for making precise-pressed optical elements therefrom as well as said optical elements
    • 光学玻璃及其制造精密压制光学元件的工艺以及所述光学元件
    • US20050159291A1
    • 2005-07-21
    • US11035177
    • 2005-01-13
    • Simone RitterUte WoelfelSilke Wolff
    • Simone RitterUte WoelfelSilke Wolff
    • G02B1/00C03C3/17C03C3/19
    • C03C3/17
    • The lead-free, preferably lithium-free, optical glass is useful in imaging, projection, telecommunications, optical communication and/or laser technology, particularly for making precise-pressed optical elements. It has a refractive index nd of 1.50 to 1.57, an Abbé number νd of 61 to 70. It also has a low transformation temperature of about or below 400° C., good production and processing properties and crystallization resistance. It has a composition, in percent by weight, based on oxide content of P2O5, 40 to 60; Al2O3, 1 to 20; B2O3, 0 to 15 to 40; BaO, 1 to 20; ZnO, 1 to 20; SrO, 0 to 5; CaO, 0 to 5; MgO, 0 to 5; and ΣMO, 5 to 25. In addition, it may contain standard refining agents, although it is preferably free of arsenic and fluorine.
    • 无铅,优选无锂的光学玻璃可用于成像,投影,电信,光通信和/或激光技术,特别是用于制造精密压制的光学元件。 它具有1.50至1.57的折射率n D d,61至70的Abbé数nud。它还具有约或低于400℃的低转变温度,良好的生产和加工性能以及 耐结晶性。 它的组成按重量百分数计,基于P O 5→40→60的氧化物含量; Al 2 O 3,1〜20; B 2 O 3,0至5; NA 2 O,0〜30; K 2 O,0〜30; Li 2 O,0〜1; SigmaM< 2> 0> 15〜40; BaO,1〜20; ZnO,1〜20; SrO,0〜5; CaO,0〜5; MgO,0〜5; 和SigmaMO,5至25.此外,它可能含有标准的澄清剂,尽管它最好不含砷和氟。