Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Reexamination Certificate
2007-08-08
2009-12-29
Group, Karl E (Department: 1793)
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
C501S046000
Reexamination Certificate
active
07638448
ABSTRACT:
The lead-free optical glass can be used in the fields of imaging, sensor technology, microscopy, medical technology, digital projection, photolithography, laser technology, wafer/chip technology, as well as of telecommunications, optical communication engineering and optics/lighting in the automotive sector. It has a refractive index ndof 1.82≦nd≦2.00 and/or an Abbe number vdof 18≦vd≦28 with good chemical stability, excellent crystallization stability and the following composition, in wt. based on oxide content, of:P2O512-35Nb2O530-50Bi2O3 2-13GeO20.1-7 Li2O≦6Na2O≦6K2O≦6Cs2O≦6MgO≦6CaO≦6SrO≦6BaO 7-<17ZnO≦6TiO2≦7ZrO2≦7WO3 2-14F ≦6.
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Ritter Simone Monika
Woelfel Ute
Wolff Silke
Group Karl E
Schott AG
Striker Michael J.
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