Optical glass

Details Optical glass Optical glass

1977-11-30

1978-10-10

Vertiz, O. R.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 54, 106 53, C03C 308, C03C 310

Patent

active

041194713

ABSTRACT:
An optical glass consisting basically of a B.sub.2 O.sub.3 -- SiO.sub.2 -- La.sub.2 O.sub.3 -- ZrO.sub.2 -- TiO.sub.2 -- ZnO -- BaO system can be produced at a lower melting temperature and in a shorter melting time than it has heretofore been possible by replacing Ta.sub.2 O.sub.5, Nb.sub.2 O.sub.5 and WO.sub.3 used in the conventional optical glasses with ZnO.

REFERENCES:
patent: 3740242 (1973-06-01), Faulstick et al.
patent: 3958999 (1976-05-01), Izunutani et al.
patent: 3964918 (1976-06-01), Hares et al.
patent: 4066464 (1978-01-01), Faulstick et al.

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