Optical glass and optical element
AssigneeCdgm Glass Co., Ltd
InventorBo Kuang
Life of this patent
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Abstract
The invention provides an optical glass, which includes 6 wt % to 10 wt % of B2O3; 10 wt % to 15% of B2O3 and SiO2, wherein the content of B2O3 is more than that of SiO2; 27 wt % to 32 wt % of La2O3; 0 wt % to 5 wt % of Gd2O3, Y2O3 and Yb2O3, wherein the content of Gd2O3 is 0 wt % to 3 wt %; more than 19 wt % but less than 25 wt % of TiO2; more than 8 wt % but less than 15 wt % of Nb2O5; 0.5 wt % to 5 wt % of ZnO; 0 wt % to 2 wt % of WO3; 2 wt % to 10 wt % of ZrO2; more than 10 wt % but less than 15 wt % of BaO; 0 wt % to 5 wt % of CaO, SrO and MgO, wherein the content of SrO is 0 wt % to 3 wt %; and 0 wt % to 0.1 wt % of Sb2O3.
Claims20
An optical glass, comprising:
- 6 wt % to 10 wt % of B2O3;
- 10 wt % to 15 wt % of B2O3 and SiO2, wherein the content of B2O3 is more than that of SiO2;
- 27 wt % to 32 wt % of La2O3;
- 0 wt % to 5 wt % of Gd2O3, Y2O3 and Yb2O3, wherein the content of Gd2O3 is 0 wt % to 3 wt %;
- more than 19 wt % but less than 25 wt % of TiO2;
- more than 8 wt % but less than 15 wt % of Nb2O5;
- 0.5 wt % to 5 wt % of ZnO;
- 0 wt % to 2 wt % of WO3;
- 2 wt % to 10 wt % of ZrO2;
- more than 10 wt % but less than 15 wt % of BaO;
- 0 wt % to 5 wt % of CaO, SrO and MgO, wherein the content of SrO is 0 wt % to 3 wt %;
- and
- 0 wt % to 0.1 wt % of Sb2O3;
- wherein a ratio of the content of TiO2 to a total content of TiO2, WO3 and Nb2O5 is (005-0.75) to 1, and
- wherein a mass ratio of TiO2 to BaO is (1.3-2.4) to 1.
An optical glass, comprising:
- 6 wt % to 10 wt % of B2O3;
- 10 wt % to 15 wt % of B2O3 and SiO2, wherein the content of B2O3 is more than that of SiO2;
- 27 wt % to 32 wt % of La2O3;
- 0.5 wt % to 5 wt % of Gd2O3, Y2O3 and Yb2O3, wherein the content of Gd2O3 is 0.5 wt % to 3 wt %;
- more than 19 wt % but less than 25 wt % of TiO2;
- 0 wt % to 2 wt % of WO3;
- 0.5 wt % to 5 wt % of ZnO;
- 2 wt % to 10 wt % of ZrO2;
- more than 10 wt % but less than 15 wt % of BaO;
- 0 wt % to 5 wt % of CaO, SrO and MgO, wherein the content of SrO is 0 wt % to 3 wt %;
- 0 wt % to 0.1 wt % of Sb2O3;
- and
- Nb2O5,
- wherein the ratio of the content of TiO2 to the total content of TiO2, WO3 and Nb2O5 is (0.55-0.75) to 1 and wherein a mass ratio of TiO2 to BaO is (1.3-2.4) to 1.
An optical glass, comprising:
- 6 wt % to 10 wt % of B2O3;
- 10 wt % to 15 wt % of B2O3 and SiO2, wherein the content of B2O3 is more than that of SiO2;
- 27 wt % to 32 wt % of La2O3;
- 0 wt % to 5 wt % of Gd2O3, Y2O3 and Yb2O3, wherein the content of Gd2O3 is 0 wt % to 3 wt %;
- more than 19 wt % but less than 25 wt % of TiO2;
- more than 8 wt % but less than 15 wt % of Nb2O5;
- 0 wt % to 2 wt % of WO3;
- wherein ratio of the content of TiO2 to a total content of TiO2, WO3 and Nb2O5 is (0.55-0.75) to 1;
- BaO, the mass ratio of TiO2 to BaO being (1.3-2.4) to 1;
- 0.5 wt % to 5 wt % of ZnO;
- 2 wt % to 10 wt % of ZrO2;
- 0 wt % to 5 wt % of CaO, SrO and MgO, wherein the content of SrO is 0 wt % to 3 wt %;
- and
- 0 wt % to 0.1 wt % of Sb2O3.
Dependencies are inferred from the claim text.