Beacon Light System

摘要

A beacon assembly for use as a marker on an elevated obstruction has a top cover and an associated bottom cover centered on a vertical axis with a ring of light-emitting elements situated between the top and bottom covers. Upper and lower reflectors are integrated into the lower side of the top cover and into the upper side of the lower cover. These reflectors are surfaces of rotation, about the vertical axis, of a horizontal parabola whose focus lies substantially on the ring of light-emitting elements. A cylindrical collimating lens lies radially outside the ring of light-emitting elements, and concentrates the center portion of the light onto the horizontal plane. Light outside the center portion is redirected by the upper and lower reflectors parallel to the horizontal plane. A twin-beacon version has a pair (or more) of these assemblies stacked one on the other.

主权项

1. A beacon that emits a substantially flat horizontal disk of light along a horizontal plane, comprising:
a top cover and a bottom cover, each situated to be centered on a vertical axis of the beacon; a plurality of light-emitting elements arranged in a ring situated between said top cover and said bottom cover, and each of said light-emitting elements having a light-emitting surface (LES) facing radially outward in respect to said vertical axis; upper and lower reflective surfaces integrated into the lower side of the top cover and into the upper side of the lower cover, respectively; each of said reflective surfaces being a surface of rotation, about said vertical axis, of a horizontal parabola whose focus lies substantially on said ring of said light-emitting elements; and a cylindrical collimating lens centered on said vertical axis and lying radially outside said ring of said light-emitting elements, such that the lens collimates a center portion of the light emanating from the LES of said light-emitting elements onto said horizontal plane, and light thereof outside said center portion impinging upon said upper and lower reflective surfaces and being directed therefrom substantially parallel to said horizontal plane.