Combined Aircraft Take-off and Tower Signal Light Unit

The patent divides the lighting system into distinct functional segments: a take-off light unit with its own optical system for forward illumination, and a tower signal light unit with its own optical system for angled signaling. Each segment can be independently optimized for its specific function while being integrated into a single combined mounting structure, thus reducing overall device complexity while maintaining independent optimization capability.

The combined light unit employs a universal mounting structure and control system that serves multiple functions: it can independently generate take-off light output for pilot illumination and tower signal light output for air traffic control communication. The single combined unit replaces what would traditionally require separate light units, achieving multi-functionality without proportionally increasing complexity.

The take-off light unit incorporates an optical system with asymmetric beam distribution that concentrates high intensity light in the forward horizontal direction where illumination is needed for take-off roll visibility, while deliberately reducing intensity in upward and lateral directions where it would cause pilot glare. This local quality variation optimizes illumination effectiveness while minimizing harmful effects.

The patent converts the potential harmful effect of high-intensity light into a beneficial directional illumination pattern. By using an optical system that shapes the beam, the high intensity is redirected forward to illuminate the runway and taxiway during take-off, while the areas that would normally receive excessive light (above and to the sides of the pilot's view) are intentionally darkened, thus converting what could be glare into useful forward illumination.