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US 12,643,813 B2Granted
High-index silicoborate and borosilicate glasses
AssigneeCorning Incorporated
InventorsPaulo Jorge Gaspar Marques, Antoine Marie Joseph Lepicard, Jian Luo, Lina Ma, Alexander I. Priven, Adam Robert Sarafian
Life of this patent
Estimating the term…
Abstract
Glass compositions include titania (TiO2), lanthanum oxide (La2O3), boron oxide (B2O3), silica (SiO2) as essential components and may optionally include zirconia (ZrO2), niobia (Nb2O5), calcium oxide (CaO), barium oxide (BaO), yttria (Y2O3), zinc oxide (ZnO), gadolinium oxide (Gd2O3), gallia (Ga2O3), tungsten oxide (WO3) and other components. The glasses may be characterized by high refractive index at 587.56 nm at comparably low density at room temperature.
Claims23
A glass comprising a plurality of components, the glass having a composition of the components comprising:
- greater than or equal to 0.5 mol. % and less than or equal to 29.0 mol. % B2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 25.2 mol. % TiO2,
- greater than or equal to 0.0 mol. % and less than or equal to 20.0 mol. % Bi2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 20.0 mol. % TeO2,
- greater than or equal to 0.0 mol. % and less than or equal to 15.0 mol. % P2O5,
- greater than or equal to 0.0 mol. % and less than or equal to 10.5 mol. % Nb2O5,
- greater than or equal to 0.0 mol. % and less than or equal to 10.0 mol. % Al2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 5.0 mol. % MoO3,
- greater than or equal to 0.0 mol. % and less than or equal to 4.0 mol. % V2O5,
- greater than or equal to 0.0 mol. % and less than or equal to 2.5 mol. % GeO2,
- greater than or equal to 0.0 mol. % and less than or equal to 2.5 mol. % ZnO,
- greater than or equal to 0.0 mol. % and less than or equal to 1.0 mol. % Ta2O5,
- greater than or equal to 95.0 mol. % RmOn,
- greater than or equal to 0.0 mol. % and less than or equal to 29.0 mol. % REmOn,
- greater than or equal to 10.0 mol. % SiO2+B2O3+P2O5,
- less than or equal to 34.0 mol. % SiO2+B2O3,
- greater than or equal to 0.3 mol. % CaO+SrO+BaO+Y2O3 and
- greater than or equal to 0.0 mol. % and less than or equal to 25.0 mol. % R2O+RO,
- wherein the composition of the components satisfies the condition:
- Y2O3—Gd2O3 [mol. %]≥−2.0,
- wherein none of the ranges of the components is modified by the term “about”,
- and wherein the glass satisfies the conditions:
- 4.0 g/cm3≤Pd≤6.0 g/cm3 and
- Pn−(1.207+0.155*Pd)>0.000,
- where
- Pn is a refractive index parameter, calculated from the glass composition in terms of mol. % of the components according to the Formula (I):
- Pn=1.844+0.0054162*La2O3+0.0031113*TiO2−0.004212*B2O3−0.0035692*SiO2+0.0027887*ZrO2+0.0078026*Nb2O5−0.00012928*CaO+0.00076566*BaO+0.0043601*Y2O3+0.00067408*ZnO+0.0068029*Gd2O3−0.0025106*Na2O+0.0039937*WO3−0.0043208*Al2O3−0.0011666*Li2O+0.0051727*PbO+0.012958*Bi2O3−0.0018753*GeO2−0.0014084*TeO2+0.0086647*Er2O3+0.0097345*Yb2O3−0.0038734*K2O−0.00041776*SrO−0.0017294*MgO, (I)
- Pd is a density parameter, calculated from the glass composition in terms of mol. % of the components according to the Formula (II):
- Pd=4.276+0.058714*La2O3−0.0077783*TiO2−0.023741*B2O3−0.018272*SiO2+0.010913*ZrO2−0.0014478*CaO+0.023857*BaO+0.033560*Y2O3+0.010174*ZnO+0.082094*Gd2O3−0.008237*Na2O+0.035497*WO3−0.031171*Al2O3−0.0080004*Li2O+0.051830*PbO+0.10437*Bi2O3−0.012816*GeO2−0.0065609*TeO2+0.10060*Er2O3+0.10637*Yb2O3−0.017097*K2O+0.009821*SrO−0.0037906*MgO, (II)
- where RmOn is a total sum of all oxides, REmOn is a total sum of rare earth metal oxides, R2O is a total sum of monovalent metal oxides, RO is a total sum of divalent metal oxides, an asterisk (*) means multiplication, and neither of the parameters Pn and Pd is modified by the term “about”.
27 more elements
A glass comprising a plurality of components, the glass having a composition of the components comprising:
- greater than or equal to 1.0 mol. % and less than or equal to 40.0 mol. % TiO2,
- greater than or equal to 1.0 mol. % and less than or equal to 40.0 mol. % B2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 35.0 mol. % SiO2,
- greater than or equal to 0.0 mol. % and less than or equal to 30.0 mol. % La2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 10.0 mol. % ZrO2,
- greater than or equal to 0.0 mol. % and less than or equal to 10.0 mol. % GeO2,
- greater than or equal to 0.0 mol. % and less than or equal to 10.0 mol. % Al2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 6.8 mol. % Nb2O5,
- greater than or equal to 0.0 mol. % and less than or equal to 6.7 mol. % Y2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 25.0 mol. % RO,
- greater than or equal to 0.0 mol. % and less than or equal to 25.0 mol. % R2O,
- greater than or equal to 45.3 mol. % La2O3+Y2O3+Gd2O3+TiO2,
- greater than or equal to 12.1 mol. % Nb2O5+ZrO2 and
- optionally comprising one or more components selected from Bi2O3, Er2O3, Nd2O3, WO3 and Yb2O3,
- wherein the composition of the components satisfies the conditions:
- SiO2+B2O3—TiO2 [mol. %]≥7.05 and
- B2O3—SiO2 [mol. %]≤7.0,
- wherein none of the ranges of the components is modified by the term “about”,
- and wherein the glass satisfies the condition:
- Pref−(0.196+0.0016*(TiO2−La2O3))>0.000,
- where
- Pref is a refraction parameter, calculated from the glass composition in terms of mol. % of the components according to the Formula (III):
- Pref=0.201656+0.00018225*B2O3−0.0010873*BaO−0.0024853*Bi2O3−0.0030326*Er2O3−0.0018856*Gd2O3−0.0017563*La2O3−0.0002505*Na2O+0.0017526*Nb2O5−0.0025472*Nd2O3−0.0016439*PbO+0.000050096*SiO2+0.0011794*TiO2−0.00072112*WO3−0.00079167*Y2O3−0.0031015*Yb2O3−0.00034209*ZnO, (III)
- where RO is a total sum of divalent metal oxides, R2O is a total sum of monovalent metal oxides, an asterisk (*) means multiplication, and the parameter Pref is not modified by the term “about”.
21 more elements
A glass comprising a plurality of components, the glass having a composition of the components comprising:
- greater than or equal to 1.0 mol. % and less than or equal to 40.0 mol. % TiO2,
- greater than or equal to 1.0 mol. % and less than or equal to 40.0 mol. % B2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 35.0 mol. % SiO2,
- greater than or equal to 0.0 mol. % and less than or equal to 30.0 mol. % La2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 20.0 mol. % CaO,
- greater than or equal to 0.0 mol. % and less than or equal to 10.0 mol. % ZrO2,
- greater than or equal to 0.0 mol. % and less than or equal to 10.0 mol. % GeO2,
- greater than or equal to 0.0 mol. % and less than or equal to 10.0 mol. % Al2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 6.8 mol. % Nb2O5,
- greater than or equal to 0.0 mol. % and less than or equal to 5.5 mol. % BaO,
- greater than or equal to 0.0 mol. % and less than or equal to 4.6 mol. % Y2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 3.5 mol. % ZnO,
- greater than or equal to 0.0 mol. % and less than or equal to 1.0 mol. % WO3,
- greater than or equal to 0.0 mol. % and less than or equal to 25.0 mol. % RO,
- greater than or equal to 0.0 mol. % and less than or equal to 25.0 mol. % R2O,
- greater than or equal to 45.3 mol. % La2O3+Yb2O3+Y2O3+Gd2O3+TiO2,
- greater than or equal to 11.0 mol. % Nb2O5+ZrO2 and
- optionally comprising one or more components selected from Bi2O3, Er2O3 and Nd2O3,
- wherein the composition of the components satisfies the conditions:
- TiO2—B2O3 [mol. %]≥−6.0 and
- TiO2—La2O3 [mol. %]≤5.0,
- wherein none of the ranges of the components is modified by the term “about”
- and wherein the glass satisfies the condition:
- Pref−(0.199+0.0025*(TiO2—La2O3))>0.000,
- where
- Pref is a refraction parameter, calculated from the glass composition in terms of mol. % of the components according to the Formula (III):
- Pref=0.201656+0.00018225*B2O3−0.0010873*BaO−0.0024853*Bi2O3−0.0030326*Er2O3−0.0018856*Gd2O3−0.0017563*La2O3−0.0002505*Na2O+0.0017526*Nb2O5−0.0025472*Nd2O3−0.0016439*PbO+0.000050096*SiO2+0.0011794*TiO2−0.00072112*WO3−0.00079167*Y2O3−0.0031015*Yb2O3−0.00034209*ZnO, (III)
- where RO is a total sum of divalent metal oxides, R2O is a total sum of monovalent metal oxides, an asterisk (*) means multiplication, and the parameter Pref is not modified by the term “about”.
25 more elements
Dependencies are inferred from the claim text.