会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明专利
    • Optical glass, preform for precision press forming, optical element, and production methods for them
    • 光学玻璃,精密压制成型,光学元件及其生产方法
    • JP2005255499A
    • 2005-09-22
    • JP2004072115
    • 2004-03-15
    • Hoya CorpHoya株式会社
    • FUJIWARA YASUHIROSUU GAKUROKU
    • G02B1/00C03B11/00C03B19/02C03B23/00C03C3/04C03C3/064C03C3/066C03C3/097
    • C03C3/064C03C3/066
    • PROBLEM TO BE SOLVED: To provide optical glass having high stability while maintaining precision press forming property, in a phosphate-based composition capable of realizing high optical characteristics high in utility value, such as high refractive index or high dispersibility.
      SOLUTION: The optical glass contains, as essential components, P
      2 O
      5 , SiO
      2 and Li
      2 O, and as arbitrary components, Na
      2 O and K
      2 O, wherein the molar ratio of Li
      2 O/(Li
      2 O+Na
      2 O+K
      2 O) is 1/3-1, Abbe number (νd) is ≤30. Alternatively, the optical glass contains, as essential components, P
      2 O
      5 , SiO
      2 and Li
      2 O, and has such a transmittance characteristic that when incident light is made incident perpendicular to one of flat optical polished faces of a glass sample having a thickness of 10.0±0.1 mm and subjected to optical polishing, which surfaces are mutually parallel, a wavelength at which the transmittance expressed by the ratio (transmitted light intensity/incident light intensity) of the intensity of transmitted light launched from the other optical polished face after transmitting the glass sample to incident light intensity becomes 70% is not higher than 510 nm, and has a refractive index (nd) of ≥1.8, an Abbe number (νd) of ≤30, and a liquidus temperature of
    • 要解决的问题:为了提供能够实现高折射率或高分散性等效用值高的光学特性的磷酸酯类组合物,提供具有高稳定性的光学玻璃,同时保持精密的冲压成形性。

      解决方案:光学玻璃含有作为必要组分的P 2 5 ,SiO 2 和Li SB> O,并且作为任意成分,Na 2 S 2 O和K SB 2,其中Li 2 O + Na O + K 2 O)为1 / 3-1,阿贝数(vd)≤30。 或者,光学玻璃含有作为必要成分的P O 5 ,SiO 2 和Li 2 并且具有这样的透射特性,即当入射光垂直于厚度为10.0±0.1mm并进行光学抛光的玻璃样品的平面光学抛光面之一入射时,这些表面相互平行,其中波长 在将玻璃样品透射到入射光强度之后从另一光学抛光面发射的透射光强度的比率(透射光强度/入射光强度)表示的透射率为70%以上,不大于510nm 折射率(nd)≥1.8,阿贝数(νd)≤30,液相线温度<1000℃。 版权所有(C)2005,JPO&NCIPI