Fluoroborosilicate glass and clad article

Details Fluoroborosilicate glass and clad article Fluoroborosilicate glass and clad article

1989-07-17

1990-11-27

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 57, 501 59, 501 75, 501900, 501903, C03C 3115

Patent

active

049735659

ABSTRACT:
There are disclosed fluoroborosilicate glasses that are particularly adapted to being drawn with lead silicate core glasses to produce clad glass fibers useful in forming fiber optic bundles to be incorporated in night vision equipment. The cladding glass has a refractive index not over about 1.465 and a coefficient of thermal expansion not over about 80.times.10.sup.-7 /.degree.C. The clad fiber has a numerical aperture approximating or equal to one.

REFERENCES:
patent: 2407874 (1946-09-01), Fraser
patent: 3764354 (1973-10-01), Ritze et al.
patent: 3784386 (1974-01-01), Arauto et al.
patent: 4721690 (1988-01-01), Ross et al.
patent: 4768859 (1988-09-01), Kasori et al.
patent: 4792535 (1988-12-01), Fine

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