Glass for press molding, and lens

Details Glass for press molding, and lens Glass for press molding, and lens

2006-08-29

2006-08-29

Lorengo, J. A. (Department: 1755)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S050000, C501S064000, C501S079000

Reexamination Certificate

active

07098158

ABSTRACT:
A glass for press molding, containing substantially no lead, consisting substantially of, as represented by mol % based on oxides:Bi2O325 to 70%,B2O3+ SiO2 5 to 75%,CeO2 0 to 10%,Al2O3 0 to 20%,Ga2O3 0 to 20%,Al2O3+ Ga2O3 0 to 30%, andZnO + TeO2+ BaO + WO3 0 to 40%,and having a refractive index of at least 1.9 to a light having a wavelength of 0.8 μm.

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D. Ehrt, Glass Technology, vol. 41, No. 6, pp. 182-185, “Structure, Properties and Applications of Borate Glasses”, Dec. 2000.

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