Zinc-containing optical glass materials
AssigneeSchott Glas
InventorsIna Mitra, Danuta Grabowski, Uwe Kolberg, Paul Kissl
Life of this patent
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Abstract
Zinc-containing optical glass materials with a refractive index nd between 1.52 and 1.66, an Abbe number vd of between 35 and 54 and a composition (in % by weight based on oxide) of: SiO2 38-58, ZnO 0.3-42, PbO 0-<30, ZnO+PbO 20-55, Li2O 0-<3, Na2O 0-14, K2O 0-12, Li2O+Na2O+K2O≧2, F 0-3, MgO 0-6, CaO 0-<5, SrO 0-6, BaO 0-<0.9, B2O3 0-<1, Al2O3 0-<1.5 and ZrO2 0-<2 and, if appropriate, refining agents in the customary amounts.
Claims22
A zinc-containing optical glass with a refractive index (nd) being in the range of from about 1.60 to about 1.63 and an Abbe number (vd) being in the range of from about 43 to about 47, said zinc-containing optical glass comprising, on an oxide basis, the composition of:
- Percentage Material by weight SiO2 40-47 ZnO 32-41 PbO 5-14 sum of ZnO + PbO 40-48 Li2O 0-<3 Na2O 0-12 K2O 0-10 sum of Li2O + Na2O + K2O ≧2 F 0-3 MgO 0-6 CaO 0-<5 SrO 0-6 BaO 0-<0.9 B2O3 0-<1 Al2O3 0-<1.5 ZrO2 0-<2.
A zinc-containing optical glass with a refractive index (nd) being in the range of from about 1.54 to about 1.64 and an Abbe number (vd) being in the range of from about 40 to about 52, said zinc-containing optical glass consisting of, on an oxide basis, the composition of:
- Percentage Material:
- by weight SiO2 39-54 ZnO 12-41 PbO 6-22 sum of ZnO + PbO 31-52 Li2O 0-<3 Na2O 0-13 K2O 0-11 sum of Li2O + Na2O + K2O ≧2 F 0-3 MgO 0-6 CaO 0-<5 SrO 0-6 BaO 0-<0.9 B2O3 0-<1 Al2O3 0-<1.5 ZrO2 0-<2.
- ≧0% by weight of at least one refining agent.
A zinc-containing optical glass with a refractive index (nd) being in the range of from about 1.56 to about 1.63 and an Abbe number (vd) being in the range of from about 42 to about 52, said zinc-containing optical glass consisting of, on an oxide basis, the composition of:
- Percentage Material by weight SiO2 40-55 ZnO 26-41 PbO 1-16 sum of ZnO + PbO 31-48 Li2O 0-<3 Na2O 0-12 K2O 0-10 sum of Li2O + Na2O + K2O ≧2 F 0-3 MgO 0-6 CaO 0-<5 SrO 0-6 BaO 0-<0.9 B2O3 0-<1 Al2O3 0-<1.5 ZrO2 0-<2
- ≧0% by weight of at least one refining agent.
A zinc-containing optical glass with a refractive index (nd) being in the range of from about 1.60 to about 1.63 and an Abbe number (vd) being in the range of from about 43 to about 47, said zinc-containing optical glass consisting of, on an oxide basis, the composition of:
- Percentage Material by weight SiO2 40-47 ZnO 32-41 PbO 5-14 sum of ZnO + PbO 40-48 Li2O 0-<3 Na2O 0-12 K2O 0-10 sum of Li2O + Na2O + K2O ≧2 F 0-3 MgO 0-6 CaO 0-<5 SrO 0-6 BaO 0-<0.9 B2O3 0-<1 Al2O3 0-<1.5 ZrO2 0-<2
- ≧0% by weight of at least one refining agent.
A zinc-containing optical glass with a refractive index (nd) being in the range of from about 1.57 to about 1.59 and an Abbe number (vd) being in the range of from about 48 to about 52, said zinc-containing optical glass consisting of, on an oxide basis, the composition of:
- Percentage Material by weight SiO2 41-50 ZnO 30-40 PbO 1-1 sum of ZnO + PbO 31-41 Li2O 0-<3 Na2O 0-11 K2O 0-10 sum of Li2O + Na2O + K2O ≧2 F 0-3 MgO 0-6 CaO 0-<5 SrO 0-6 BaO 0-<0.9 B2O3 0-<1 Al2O3 0-<1.5 ZrO2 0-<2
- ≧0% by weight of at least one refining agent.
A zinc-containing optical glass with a refractive index (nd) being in the range of from about 1.54 to about 1.64 and an Abbe number (vd) being in the range of from about 40 to about 52, said zinc-containing optical glass consisting of, on an oxide basis, the composition of:
- Percentage Material by weight SiO2 39-54 ZnO 12-41 PbO 6-22 sum of ZnO + PbO 31-52 Li2O 0-<3 Na2O 0-13 K2O 0-11 sum of Li2O + Na2O + K2O ≧2 F 0-3 MgO 0-6 CaO 0-<5 SrO 0-6 BaO 0-<0.9 B2O3 0-<1 Al2O3 0-<1.5 ZrO2 0-<2 Cs2O O to about 2.5;
- 0 to about 5% by weight of one member of the group and combinations thereof:
- Rb2O, La2O3, Y2O3, and GeO2;
- ≧0% by weight of a coloring component;
- and
- ≧0% by weight of at least one refining agent.
A zinc-containing optical glass with a refractive index (nd) being in the range of from about 1.56 to about 1.63 and an Abbe number (vd) being in the range of from about 42 to about 52, said zinc-containing optical glass consisting of, on an oxide basis, the composition of:
- Percentage Material by weight SiO2 40-55 ZnO 26-41 PbO 1-16 sum of ZnO + PbO 31-48 Li2O 0-<3 Na2O 0-12 K2O 0-10 sum of Li2O + Na2O + K2O ≧2 F 0-3 MgO 0-6 CaO 0-<5 SrO 0-6 BaO 0-<0.9 B2O3 0-<1 Al2O3 0-<1.5 ZrO2 0-<2 Cs2O 0 to about 2.5;
- 0 to about 5% by weight of one member of the group and combinations thereof:
- Rb2O, La2O3, Y2O3, and GeO2;
- ≧0% by weight of a coloring component;
- and
- ≧0% by weight of at least one refining agent.
A zinc-containing optical glass with a refractive index (nd) being in the range of from about 1.60 to about 1.63 and an Abbe number (vd) being in the range of from about 43 to about 47, said zinc-containing optical glass consisting of, on an oxide basis, the composition of:
- Percentage Material by weight SiO2 40-47 ZnO 32-41 PbO 5-14 sum of ZnO + PbO 40-48 Li2O 0-<3 Na2O 0-12 K2O 0-10 sum of Li2O + Na2O + K2O ≧2 F 0-3 MgO 0-6 CaO 0-<5 SrO 0-6 BaO 0-<0.9 B2O3 0-<1 Al2O3 0-<1.5 ZrO2 0-<2 Cs2O 0 to about 2.5;
- 0 to about 5% by weight of one member of the group and combinations thereof:
- Rb2O, La2O3, Y2O3, and GeO2;
- ≧0% by weight of a coloring component;
- and
- ≧0% by weight of at least one refining agent.
A zinc-containing optical glass with a refractive index (nd) being in the range of from about 1.57 to about 1.59 and an Abbe number (vd) being in the range of from about 48 to about 52, said zinc-containing optical glass consisting of, on an oxide basis, the composition of:
- Percentage Material by weight SiO2 41-50 ZnO 30-40 PbO 0-1 sum of ZnO + PbO 31-41 Li2O 0-<3 Na2O 0-11 K2O 0-10 sum of Li2O + Na2O + K2O ≧2 F 0-3 MgO 0-6 CaO 0-<5 SrO 0-6 BaO 0-<0.9 B2O3 0-<1 Al2O3 0-<1.5 ZrO2 0-<2 Cs2O 0 to about 2.5;
- 0 to about 5% by weight of one member of the group and combinations thereof:
- Rb2O, La2O3, Y2O3, and GeO2;
- ≧0% by weight of a coloring component;
- and
- ≧0% by weight of at least one refining agent.
Dependencies are inferred from the claim text.