OPTICAL GLASS

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):

Description

Claims

1. Optical glass, comprising the following composition (in wt. % based on oxide):

2. Glass according to claim 1, characterized in that it has an Al2O3 content of up to at most 5 wt. %.

3. Glass according to claim 1, characterized in that it has a content of one or more components selected from the group Li2O, Na2O, K2O of at most 20 wt. %, having a maximum Li2O content of 8 wt. % and having a maximum Na2O content of 10 wt. %.

4. Glass according to claim 1, characterized in that it has a CaO content of at most 4 wt. %, preferably from 2 to 4 wt. %.

5. Glass according to claim 1, characterized in that it has a content of one or more components selected from the group MgO, CaO, SrO, BaO, ZnO of at most 18 wt. %, each individual component having a content of at most 8 wt. %.

6. Glass according to claim 1, characterized by the following composition (in wt. % based on oxide):

7. Glass according to claim 1, characterized in that it has a content of one or more components, selected from the group F, P2O5, Y2O3, Gd2O3, GeO2, Yb2O5 WO3 of at most 5 wt. % in total.

8. Glass according to claim 1, characterized in that it contains at least one of the components as a refining agent (in wt. %):

9. Glass according to claim 1, characterized in that it has a refractive index nd of 1.60≦nd≦1.80 and/or an Abbe number νd of 30≦νd≦40.

10. Method of using a glass according to claim 1, for optical elements, such as lenses, prisms, light guide rods, arrays, optical fibres, gradient components and optical windows.

11. Method for producing an optical element, comprising the step: precise pressing a glass according to claim 1.

12. Optical element, such as lenses, prisms, light guide rods, arrays, optical fibres, gradient components and optical windows, comprising a glass according to claim 1.

13. Optical parts or optical components for imaging, sensors, microscopy, medical technology, digital protection, telecommunication, optical communications engineering/information transmission, optics/lighting in the automotive sector, photolithography, steppers, excimer lasers, wafers, computer chips and/or integrated circuits and electronic devices which contain such circuits and chips, comprising one or more optical elements according to claim 12.

14. Method of using an optical element according to claim 11 for producing optical parts or optical components for imaging, sensors, microscopy, medical technology, digital protection, telecommunication, optical communications engineering/information transmission, optics/lighting in the automotive sector, photolithography, steppers, excimer lasers, wafers, computer chips and/or integrated circuits and electronic devices which contain such circuits and chips.