Optical and ophthalmic glass with refractive indices greater tha

Details Optical and ophthalmic glass with refractive indices greater tha Optical and ophthalmic glass with refractive indices greater tha

1986-04-16

1988-01-12

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 59, 501 63, 501 64, 501 66, 501903, C03C 3093, C03C 3091, C03C 3118, C03C 400

Patent

active

047191864

ABSTRACT:
An optical and ophthalmic glass with high refractive index, high Abbe number and low density, which is distinguished by good chemical stability, good crystallization behavior and capability of chemical hardening, comprises (in % by weight):

REFERENCES:
patent: 2433882 (1948-01-01), Armstead
patent: 3420648 (1969-01-01), Andrews et al.
patent: 3790260 (1974-02-01), Boyd
patent: 3951671 (1976-04-01), Parry et al.
patent: 3997250 (1976-12-01), Krohn et al.
patent: 4367012 (1983-01-01), Ikeda et al.
patent: 4562161 (1985-12-01), Mennemann et al.

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