Single Strand Bundle Fiber Optic Light Guides are generally used as supplemental lighting for hard to reach areas wherein the built-in illumination is too weak in intensity as in borescopes viewing a distant wall or spotlight affects to a distinct area.
FOI - 6 LIQUID LIGHT GUIDES
These units are highly desirable with several distinct advantages over Fiber Optic Light Guides. They have excellent light gathering capabilities with almost no light lost over distance which results in much higher light intensity on the remittance end. They are also excellent carriers of Ultra-Violet (U.V.) Light. They have a N.A. of .47 and are usable from 270 to 720mm. These Light Guides are usually more flexible than Fiber Optic Light Guides. The usual construction is of flexible plastic tube filled with a transparent, anaerobic non-toxic liquid, covered by a flexible metallic tubing over which a thin PVC jacket is drawn. Both ends of the Bundle are sealed by a polished fused silica glass window. The usual Bundle is 72" long with a 5 mm Liquid Bundle and .412" outside diameter. The end that fits into the Light Source is .625" Diameter to fit the FOI-150 Watt Halogen Illuminator or FOI-250 Watt Halogen Illuminator.