Highly refractive, ThO.sub.2 -free optical glasses having refrac

Details Highly refractive, ThO.sub.2 -free optical glasses having refrac Highly refractive, ThO.sub.2 -free optical glasses having refrac

1982-09-22

1984-09-18

Bell, Mark

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 75, 501 76, 501901, C03C 314, C03C 330

Patent

active

044725116

ABSTRACT:
Highly refractive, ThO.sub.2 -free optical glasses having refractive indices of 1.86-1.94 and Abbe-index numbers greater than or equal to 30, comprise:

REFERENCES:
patent: 3080240 (1963-03-01), Geffcken et al.
patent: 3650780 (1972-03-01), Connelly
patent: 3958999 (1976-05-01), Izumitani
patent: 4120732 (1978-10-01), Komorita et al.
patent: 4166746 (1979-09-01), Ishibashi et al.

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