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    • 7. 发明专利
    • Optical glass for precision press forming
    • 用于精密压制成型的光学玻璃
    • JP2005200261A
    • 2005-07-28
    • JP2004007621
    • 2004-01-15
    • Sumita Optical Glass Inc株式会社住田光学ガラス
    • YAMAMOTO YOSHINORISAWANOBORI SHIGETONAGAHAMA SHINOBU
    • C03C3/16C03C3/19C03C3/21C03C3/253
    • C03C3/16Y10S501/901
    • PROBLEM TO BE SOLVED: To provide high refractive index, high dispersion optical glass for precision press forming which has refractive index (nd) of ≥1.83 and Abbe's number (νd) of ≤26.0, does not contain components harmful to human body at all though having effects of easily decreasing the melting point same as lead oxide or tellurium oxide, has a low temperature softening characteristic that the deformation temperature (At) is ≤550°C, is small in the coloring of glass and excellent in mass-productivity and is hardly colored by the irradiation with ultraviolet ray.
      SOLUTION: The optical glass for precision press forming comprises a composition of 15-29 wt.% P
      2 O
      5 , 0-2 wt.% B
      2 O
      3 , 0-14 wt.% GeO
      2 , 20-35 wt.% in total of P
      2 O
      5 , B
      2 O
      3 and GeO
      2 , 0-5 wt.% Li
      2 O, 3-14 wt.% Na
      2 O, 0-9 wt.% K
      2 O, 5-15 wt.% in total of Li
      2 O, Na
      2 O and K
      2 O, 2-22 wt.% Nb
      2 O
      3 , 34-60 wt.% Bi
      2 O
      3 , 0-5 wt.% WO
      3 , 0-5 wt.% BaO and 0-7 wt.% In
      2 O
      3 and has ≤550°C deformation temperature (At), refractive index (nd) of ≥1.83 and Abbe number (νd) of ≤26.0.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供高折射率,折射率(nd)≥1.83和阿贝数(νd)≤26.0的精密冲压成形用高分散型光学玻璃,不含有对人体有害的成分 尽管具有容易降低与氧化铅或氧化碲相同的熔点的效果,但是具有变形温度(At)≤550℃的低温软化特性,玻璃的着色小, 通过紫外线照射几乎不着色。 解决方案:用于精密压制成型的光学玻璃包含15-29重量%的P 2 5 ,0-2重量%的B SB > 0 3 ,0-14重量%的GeO 2 SBB,20-35重量%的P 2 O 5 ,B 2 3 和GeO 2 ,0-5重量%Li O,3-14重量%Na 2 SBO,0-9重量%K 2 SBO,总共5-15重量%的Li O 2,SB 2,K 2 O 2,K 2 O 2,SB 2 O 2,Sb 2 O 2, 34-60重量%的Bi 3 SB 3,0-5重量%的WO 3 SB,3-O- 5重量%BaO和0-7重量%In 2 3 ,具有≤550℃变形温度(At),折射率(nd)≥1.83 阿贝数(νd)≤26.0。 版权所有(C)2005,JPO&NCIPI
    • 9. 发明专利
    • Optical glass for precision press forming, which has high refractive index
    • 光学玻璃用于精密成型,具有高折射率
    • JP2008105864A
    • 2008-05-08
    • JP2006287874
    • 2006-10-23
    • Sumita Optical Glass Inc株式会社住田光学ガラス
    • YAMAMOTO YOSHINORI
    • C03C3/253C03C3/14C03C3/15C03C3/155G02B1/00
    • C03C3/253C03C3/155
    • PROBLEM TO BE SOLVED: To provide optical glass for precision press forming, which has a high refractive index (nd) and a low deformation temperature (At).
      SOLUTION: The optical glass for precision press forming comprises, as constitutive components by weight, 64-83% Bi
      2 O
      3 , 4-17% B
      2 O
      3 , 0-12% GeO
      2 (provided that the total content of B
      2 O
      3 and GeO
      2 is 10-20%), 0-7% La
      2 O
      3 , 0-7% Gd
      2 O
      3 (provided that the total content of La
      2 O
      3 and Gd
      2 O
      3 is 1-13%), 0-4% ZrO
      2 , 0-5% Ta
      2 O
      5 , 0-15% ZnO, 0-2% Sb
      2 O
      3 , and 0-1% In
      2 O
      3 , and has a refractive index (nd) of 2.05-2.25, an Abbe's number (νd) of 15-22, and a deformation temperature (At) of ≤510°C.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供具有高折射率(nd)和低变形温度(At)的精密冲压成形用光学玻璃。 < P>解决方案:用于精密冲压成形的光学玻璃包含以重量计的组成成分为64-83%的Bi 2 SB 3 O 3,SB 4〜17% > 0 3 ,0-12%GeO 2 (条件是B 2 O 3 和GeO 2 为10-20%),0-7%La 2 3 ,0-7% SB> 2 3 (条件是La 2 3 和Gd 2 为1-13%),0-4%ZrO 2 SBB,0-5%Ta 2 / SB>,0-15%ZnO,0-2%Sb O 3 和0-1%In 2 > 3 ,折射率(nd)为2.05-2.25,阿贝数(νd)为15-22,变形温度(At)为≤510℃。 版权所有(C)2008,JPO&INPIT
    • 10. 发明专利
    • Optical glass suitable for being molded
    • 适用于模塑的光学玻璃
    • JP2004123448A
    • 2004-04-22
    • JP2002289892
    • 2002-10-02
    • Sumita Optical Glass Inc株式会社住田光学ガラス
    • YAMAMOTO YOSHINORISAWANOBORI SHIGETONAGAHAMA SHINOBU
    • G02B1/00C03C3/17C03C3/19C03C3/21
    • C03C3/21C03C3/17C03C3/19
    • PROBLEM TO BE SOLVED: To provide low melting glass which can be subjected to press molding at a low temperature of about 370-430°C.
      SOLUTION: The low melting glass is phosphate-based oxide glass and contains a durability-improving component in addition to glass-forming components. The low melting glass is characterized in that the weight reduction rate in a durability test is ≤0.1%. The low melting glass has a composition comprising, by mol, 30-39% P
      2 O
      5 , 8-23% Li
      2 O, 7.5-29% Na
      2 O, 0-15% K
      2 O, 0.5-12% Al
      2 O
      3 , 4.5-11% Bi
      2 O
      3 , 0-15% ZnO, 0-7% BaO, 0-3% CaO, 0-10% MgO, 0-2% SrO, 0-4% TiO
      2 , 0-1.5% ZrO
      2 , 0-8% Nb
      2 O
      3 , 0-2.5% B
      2 O
      3 , and 0-4% WO
      3 , with the proviso that the total amount of Li
      2 O, Na
      2 O, and K
      2 O is 34-47%. The low melting glass has a deformation temperature (At) of ≤400°C, a refractive index (nd) of ≥1.60, and an Abbe's number (νd) of ≤42.0.
      COPYRIGHT: (C)2004,JPO
    • 待解决的问题:提供可在约370-430℃的低温下进行加压成型的低熔点玻璃。 解决方案:低熔点玻璃是磷酸盐基氧化物玻璃,除了玻璃形成成分之外,还含有耐久性改善成分。 低熔点玻璃的特征在于耐久性试验中的重量减少率≤0.1%。 低熔点玻璃具有以下组成:其中含有30-39%的P 2 5 ,8-23%的Li SB 2 O, 7.5-29%Na 2 SBO,0-15%K SB 2,0.5-12%Al 2 SB 3, SB>,4.5-11%Bi 2 3 ,0-15%ZnO,0-7%BaO,0-3%CaO,0-10%MgO, 0-2%SrO,0-4%TiO 2 SB 2,0-1.5%ZrO 2 SBB,0-8%Nb 3 ,0-2.5%B 2 3 和0-4%WO SB <3>,条件是 Li的总量为O,Na 2 O,K SB 2为34-47%。 低熔点玻璃具有≤400℃的变形温度(At),折射率(nd)≥1.60,阿贝数(νd)≤42.0。 版权所有(C)2004,JPO