Improved Fresnel Lens Optical Landing System (IFLOLS)
The IFLOLS, designed by engineers at NAEC Lakehurst, NJ, keeps the same basic design but improves on the FLOLS, giving a more precise indication of aircraft position on the glideslope. A prototype IFLOLS was tested on board USS George Washington (CVN-73) in 1997 and every deploying aircraft carrier since 2004 has had the system. The Improved Fresnel Lens Optical Landing System, IFLOLS, uses a fiber optic "source" light, projected through lenses to present a sharper, crisper light. This has enabled pilots to begin to fly "the ball" further away from the ship making the transition from instrument flight to visual flight smoother. Additional improvements include better deck motion compensation due to internalization of the mechanism.
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