Patent ID: 7755514

Claim:
A precision approach path indicator system effective in providing approach slope guidance for aircraft approaching an airport runway, the system comprising a plurality of light assemblies positioned on or in proximity to an airport runway, and structured to be effective in providing approach slope guidance light signals to a pilot of an aircraft approaching a runway, each light assembly comprising a first array of first light emitting diodes which emit light of a first color, a first mirrored surface positioned to reflect light emitted from the first array of first light emitting diodes, a second array of second light emitting diodes which emit light of a second color different from the first color, and a second mirrored surface positioned to reflect light emitted from the second array of second light emitting diodes, and a projection lens positioned to allow light reflected by the first and second mirrored surfaces to pass therethrough, provided that substantially no light emitted from the first array of first light emitting diodes is reflected from the second mirrored surface and substantially no light emitted from the second array of second light emitting diodes is reflected from the first mirrored surface.