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 - 3
This unit is similar in all respects to FOI-2 in usage, length, and applications. The difference is this unit has a .350" outside diameter and .125" diameter light guide. Its principal application is where the diameter of the entrance hole does not allow a larger light pipe to be used. It has to be used in conjunction with the FOI-150 Watt Halogen Illuminator or FOI-250 Watt Halogen Illuminator.