Back to results
US 12,673,888 B2Granted
High-index silicoborate and borosilicate glasses
AssigneeCorning Incorporated
InventorsAntoine Marie Joseph Lepicard, Jian Luo, Alexander I Priven
Life of this patent
Estimating the term…
Abstract
Glass compositions include titania (TiO2), lanthanum oxide (La2O3) and boron oxide (B2O3) as essential components and may optionally include silica (SiO2), niobia (Nb2O5), zirconia (ZrO2), yttria (Y2O3), bismuth oxide (Bi2O3), tungsten oxide (WO3), zinc oxide (ZnO) and other components. The glasses may be characterized by high refractive index at 587.56 nm at comparably low density at room temperature.
Claims18
A glass comprising a plurality of components, the glass having a composition of the components comprising:
- greater than or equal to 12.0 mol. % and less than or equal to 35.0 mol. % TiO2,
- greater than or equal to 2.5 mol. % and less than or equal to 20.0 mol. % ZrO2,
- greater than or equal to 0.5 mol. % and less than or equal to 40.0 mol. % B2O3,
- greater than or equal to 0.5 mol. % and less than or equal to 30.0 mol. % Nb2O5,
- 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 15.0 mol. % P2O5,
- 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 10.0 mol. % Gd2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 8.0 mol. % WO3,
- greater than or equal to 0.0 mol. % and less than or equal to 5.0 mol. % PbO,
- greater than or equal to 0.0 mol. % and less than or equal to 5.0 mol. % V2O5,
- greater than or equal to 0.0 mol. % and less than or equal to 1.5 mol. % ZnO,
- greater than or equal to 95.0 mol. % RmOn,
- greater than or equal to 0.5 mol. % and less than or equal to 35.0 mol. % REmOn,
- a sum of SiO2+B2O3+P2O5 greater than or equal to 10.0 mol. % and
- a sum of TiO2+Nb2O5 less than or equal to 42.0 mol. %,
- wherein the composition of the components satisfies the condition:
- SiO2+B2O3−P2O5[mol. %]≥0.000,
- wherein none of the ranges of the components is modified by the term “about”,
- and wherein the glass satisfies the condition:
- P1−(1.765+0.057*Pd)>0.000,
- where
- Pn is a parameter predicting a refractive index at 587.56 nm, nd, 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)
- and Pd is a parameter predicting a density at room temperature, dRT, calculated from the glass composition in terms of mol. % of the components according to the Formula (II):
- Pd=4.688+0.047868*La2O3−0.0065829*TiO2−0.027601*B2O3−0.022365*SiO2+0.016475*ZrO2−0.0052977*Nb2O5−0.0030466*CaO+0.014971*BaO+0.019511*Y2O3+0.0076377*ZnO+0.066160*Gd2O3−0.016932*Na2O+0.025764*WO3−0.035116*Al2O3−0.0094315*Li2O+0.047388*PbO+0.080813*Bi2O3−0.0088118*GeO2+0.072296*Er2O3+0.078888*Yb2O3−0.026242*K2O+0.010351*SrO−0.0030424*MgO, (II)
- where RmOn is a total sum of all oxides, REmOn is a total sum of rare earth metal oxides, and an asterisk (*) means multiplication, and neither of the parameters Pn and Pd is modified by the term “about”.
24 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 13.5 mol. % ZrO2,
- greater than or equal to 0.3 mol. % and less than or equal to 35.0 mol. % TiO2,
- greater than or equal to 0.3 mol. % and less than or equal to 29.5 mol. % B2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 9.0 mol. % WO3,
- greater than or equal to 0.0 mol. % and less than or equal to 5.0 mol. % PbO,
- greater than or equal to 0.0 mol. % and less than or equal to 2.0 mol. % Gd2O3,
- greater than or equal to 0.0 at. % and less than or equal to 2.0 at. % F,
- a sum of TiO2Nb2O5La2O3 greater than or equal to 10.0 mol. % and less than or equal to 70.0 mol. %,
- a sum of SiO2+B2O3+P2O5 greater than or equal to 10.0 mol. %,
- a sum of REmOn+WO3+ZrO2 greater than or equal to 5.0 mol. %,
- a sum of SiO2+Y2O3+Gd2O3 greater than or equal to 0.3 mol. %,
- a sum of V2O5+MoO3 greater than or equal to 0.0 mol. % and less than or equal to 3.0 mol. % and
- optionally comprising one or more components selected from Bi2O3, CaO, BaO, ZnO, Na2O, Al2O3, Li2O, GeO2, TeO2, K2O, SrO and MgO,
- wherein the composition of the components satisfies the conditions:
- TiO2/(TiO2+Nb2O5+WO3+Bi2O3) [mol. %]≥0.050,
- SiO2+B2O3−P2O5 [mol. %]≥1.0 and
- La2O3/TiO2 [mol. %]≤1.5,
- wherein none of the ranges of the components is modified by the term “about”, and wherein the glass satisfies the condition:
- Pn−(1.99+0.083*(TiO2/(TiO2+Nb2O5+WO3+Bi2O3)))>0.000,
- where
- Pn is a parameter predicting a refractive index at 587.56 nm, nd, 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)
- where REmOn is a total sum of rare earth metal oxides, and an asterisk (*) means multiplication, and the parameter Pn is not modified by the term “about”.
20 more elements
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 45.0 mol. % B2O3,
- greater than or equal to 0.1 mol. % and less than or equal to 25.0 mol. % Bi2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 8.0 mol. % WO3,
- a sum of SiO2+B2O3+P2O5 greater than or equal to 10.0 mol. %,
- a sum of TiO2+Nb2O5 greater than or equal to 8.5 mol. %,
- a sum of REmOn+WO3+ZrO2 greater than or equal to 4.5 mol. % and
- optionally comprising one or more components selected from CaO, BaO, ZnO, Na2O, Al2O3, Li2O, PbO, GeO2, TeO2, K2O, SrO and MgO,
- wherein the composition of the components satisfies the condition:
- SiO2+B2O3−P2O5[mol. %]≥0.100,
- wherein none of the ranges of the components is modified by the term “about”, and wherein the glass satisfies the condition:
- Pn>2.045,
- where
- Pn is a parameter predicting a refractive index at 587.56 nm, nd, 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)
- where REmOn is a total sum of rare earth metal oxides and an asterisk (*) means multiplication, and the parameter P1 is not modified by the term “about”.
12 more elements
Dependencies are inferred from the claim text.