Method of making a fiberoptic light guide

Details Method of making a fiberoptic light guide Method of making a fiberoptic light guide

2007-03-27

2007-03-27

Lee, John D. (Department: 2874)

Optical waveguides

Optical fiber bundle

C065S409000, C065S411000

Reexamination Certificate

active

11172402

ABSTRACT:
A method of making a fiberoptic light guide utilizes a hollow glass cladding blackened by chemical reduction. The cladding has a predetermined lead content and is heated to an elevated temperature in an atmosphere of substantially 100% hydrogen gas in a furnace. The blackening step is accomplished before or after a bundle of optic fibers is inserted within the cladding and is drawn to produce a fused fiberoptic rod. The blackening step provides the cladding with a black opaque nature that inhibits the transmission of light transversely through the cladding.

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