Optical glasses with improved varying partial dispersion in the

Details Optical glasses with improved varying partial dispersion in the Optical glasses with improved varying partial dispersion in the

1976-02-10

1978-01-03

Douglas, Winston A.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 54, C03C 308, C03C 304, C03C 330

Patent

active

040664643

ABSTRACT:
Optical, fluorine containing barium borosilicate glasses having an improved varying partial dispersion in the optical positional range of lanthanum crown and lanthanum flint glasses wherein the ratio of SiO.sub.2 with respect to SiO.sub.2 and B.sub.2 O.sub.3 is at least 0.62 and the content of fluorine in said glass is between 2 and 7 grams per 100 cc of said glass.

REFERENCES:
patent: 3716385 (1973-02-01), Ritzi
patent: 3740242 (1973-06-01), Faulstich et al.

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