Optical glass
AssigneeSchott AG
InventorsSilke Wolff, Goran Sabljic, Ute Woelfel
Life of this patent
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Abstract
The invention relates to optical glasses intended for the application fields of imaging, sensors, microscopy, medical technology, digital projection, photolithography, laser technology, wafer/chip technology, and for telecommunication, optical communication engineering and optics/lighting in the automotive sector, having a refractive index of 1.60≦nd≦1.80 and/or an Abbe number of 30≦νd≦40 with a pronounced short flint character, good chemical stability, excellent crystallization stability, good solarization stability and the following composition (in wt. % based on oxide): SiO2 19-45 B2O3 3-7.5 Nb2O5 25-31 K2O 2-8 TiO2 0.1-2 ZrO2 6-10 Ta2O5 0.5-8.
Claims39
An optical glass having a composition, in percent by weight based on oxide content, of:
- SiO2
- 19-45
- B2O3
- 3-7.5
- Nb2O5
- 25-31
- K2O
- 2-8
- TiO2
- 0.1-2
- ZrO2
- 6-10
- Ta2O5
- 0.5-8.
An optical glass having a composition, in percent by weight based on oxide content, of:
- SiO2
- 19-45
- B2O3
- 3-7.5
- Nb2O5
- 25-31
- K2O
- 2-8
- TiO2
- 0.1-0.45
- ZrO2
- 6-10
- Ta2O5
- 0.5-8.
An optical glass having a composition, in percent by weight based on oxide content, of:
- SiO2
- 19-45
- B2O3
- 3-7.5
- Nb2O5
- 25-31
- K2O
- 2-8
- Na2O
- 6-10
- TiO2
- 0.1-2
- ZrO2
- 6-10
- Ta2O5
- 0.5-8.
Dependencies are inferred from the claim text.