Optical CdO and ThO.sub.2 -free glass with refractive indices of

Details Optical CdO and ThO.sub.2 -free glass with refractive indices of Optical CdO and ThO.sub.2 -free glass with refractive indices of

1987-12-28

1989-04-25

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 76, 501903, C03C 3072, C03C 3074, C03C 400

Patent

active

048248096

ABSTRACT:
A new, CdO-and ThO.sub.2 -free optical glass with refractive indices of 1.73-1.78 and Abbe numbers of 30-34 and with particularly good devitrification stability comprises (in weight %):

REFERENCES:
patent: 3477863 (1969-11-01), Bromer et al.
patent: 3653933 (1972-04-01), Tsunekawa
patent: 3888692 (1975-06-01), Kuwayama
patent: 3958999 (1976-05-01), Izamitani et al.
patent: 4568651 (1986-02-01), Sagara
Chemical Abstracts 80:148482f (1974).

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