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US 3,940,278 AGranted
Fiber optics
AssigneeOwens-Corning Fiberglas Corporation
InventorWarren W. Wolf
Life of this patent
Estimating the term…
Abstract
A boron-free glass composition for use in fiber optics is disclosed. In the field of fiber optics, light is transmitted from one point to another by small diameter fibers. These fibers are composed of a central core surrounded by an outer cladding or sheath. The glass compositions of this invention can be used as the core glass or the sheath glass.
Claims1
A boron-free glass composition capable of being the core glass or cladding glass in a light transmitting optical fiber product;
- said glass composition consisting essentially by weight of:
- Ingredient Weight Percent ______________________________________ SiO.sub.2 40 to 50 Al.sub.2 O.sub.3 5 to 7 BaO 30 to 50 Na.sub.2 O 5 to 20 Sb.sub.2 O.sub.3 0 to 0.05 ______________________________________
- and having an index of refraction ranging from 1.55 to 1.65.
Dependencies are inferred from the claim text.