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    • 84. 发明授权
    • Optical glass
    • 光学玻璃
    • US08207076B2
    • 2012-06-26
    • US12237857
    • 2008-09-25
    • Mitchiko Ogino
    • Mitchiko Ogino
    • C03C3/068
    • C03C3/068
    • A high-refractive index, low-dispersion optical glass which is small in a change of imaging properties due to a change in temperature of the use environment, specifically one capable of realizing an absolute value of multiplication (α×β) of an average coefficient of linear expansion (α) at from −30 to +70° C. and a photoelastic constant (β) at a wavelength of 546.1 nm of not more than 130×10−12° C.−1×nm×cm−1×Pa−1, is manufactured without using large qualities of components which are high in an environmental load and scarce mineral resources. The optical glass of the invention has an absolute value of multiplication (α×β) of an average coefficient of linear expansion (α) at from −30 to +70° C. and a photoelastic constant (β) at a wavelength of 546.1 nm of not more than 130×10−12° C.−1×nm×cm−1×Pa−1; and contains more than 0% of SiO2, B2O3 and La2O3, more than 13% and less than 20% of (ZrO2+Nb2O5) and less than 2.0% of ZnO in terms of % by mass on the oxide basis.
    • 由于使用环境的温度变化导致的成像特性变化小的高折射率低色散型光学玻璃,特别是能够实现平均值的绝对值(α×&bgr) -30〜70℃的线膨胀系数(α),波长546.1nm的光弹性常数(& bgr)不大于130×10-12℃-1-nm×cm- 1×Pa-1,不使用环境负荷高,矿产资源稀缺的成分大的品质。 本发明的光学玻璃具有在-30至+ 70℃下的平均线性膨胀系数(α)的乘积(α×&bgr)的绝对值,并且波长处的光弹性常数(& bgr) 546.1nm不大于130×10-12℃-1-nm×cm-1×Pa-1; 并且以氧化物为基准以质量%计含有超过0%的SiO 2,B 2 O 3和La 2 O 3,超过13%且小于20%的(ZrO 2 + Nb 2 O 5)和小于2.0%的ZnO。
    • 88. 发明授权
    • Optical glass
    • 光学玻璃
    • US08058196B2
    • 2011-11-15
    • US11514109
    • 2006-09-01
    • Atsushi NagaokaJie FuMichiko Ogino
    • Atsushi NagaokaJie FuMichiko Ogino
    • C03C3/064C03C3/14
    • C03C3/064C03C3/066C03C3/068C03C3/14
    • The present invention provides optical glasses containing Bi2O3 in which the optical glasses have at least one of the properties of being substantially free from opacification and being substantially devitrified within the glass body during reheating steps in production processes, superior chemical durability, and free from black coloring.The optical glass has a refractive index (nd) of no less than 1.75 and an Abbe number (νd) of no less than 10 as optical constants.The optical glass contains Bi2O3 in a content from no less than 10% by weight to less than 90% by weight, and has at least one of the properties of being substantially free from opacification and being substantially devitrified within the glass body under the conditions of a reheating test (a).
    • 本发明提供了含有Bi 2 O 3的光学玻璃,其中光学玻璃具有在制造过程中的再加热步骤期间基本上没有不透明并且在玻璃体内基本上失透的性质中的至少一种,优异的化学耐久性和无黑色着色 。 光学玻璃的折射率(nd)不小于1.75,阿贝数(&ngr; d)作为光学常数不小于10。 光学玻璃含有Bi 2 O 3的含量不小于10重量%至小于90重量%,并且具有基本上没有不透明并且在玻璃体内基本上失透的性质中的至少一种在 再加热试验(a)。
    • 90. 发明申请
    • OPTICAL GLASS
    • 光学玻璃
    • US20110124485A1
    • 2011-05-26
    • US13009247
    • 2011-01-19
    • Jie FU
    • Jie FU
    • C03C3/14C03C3/15C03C3/253C03C3/16C03C3/21C03C3/19C03C3/155C03C3/145C03C3/068C03C3/064
    • C03C3/068C03C3/15C03C3/155
    • A glass composition being suitable for precision mold press forming, having superior resistance to devitrification, having optical constants (a refractive index, an Abbe number, and the like) required for aspherical lenses, and a low glass transition temperature. There is provided an optical glass comprising 5 mol % to 60 mol % of a B2O3 component, and 0.2 mol % to 60 mol % of a TeO2 component, by mol % on the basis of oxides. Further, there is provided an optical glass mentioned above having optical constants with a refractive index (nd) of 1.80 to 2.20, and an Abbe number (νd) of 16 to 40. Still further, there is provided an optical glass mentioned above having a glass transition temperature (Tg) of no more than 680° C.
    • 适用于精密模压成型的玻璃组合物,具有优异的抗失透性,具有非球面透镜所需的光学常数(折射率,阿贝数等)和低玻璃化转变温度。 提供了包含5mol%至60mol%的B 2 O 3组分和0.2mol%至60mol%的TeO 2组分的基于氧化物的摩尔%的光学玻璃。 此外,提供了上述具有折射率(nd)为1.80〜2.20的光学常数和16〜40的阿贝数(&ngr; d)的光学玻璃。此外,提供了上述光学玻璃 玻璃化转变温度(Tg)不超过680℃