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Anti-collision light assembly
| Details |
Inventors: Lyons, Harold W.;
Assignee: Whelen Technologies, Inc. (Chester, CT)
Primary Examiner: Cole; Richard R.
Assistant Examiner:
Attorney, Agent or Firm: Chilton, Alix & Van Kirk
A compact and highly efficient warning light for producing high intensity light pulses which are radiated in accordance with a desired directional pattern includes a light source and a pair of reflectors disposed within a lens cover. The reflectors each include plural parabolic reflective surfaces distributed about an axis with the surfaces having a common focal point located on the axis. The two reflectors are coaxial and the common focal points of the surfaces thereof coincide. |
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DETAILED DESCRIPTION The present invention overcomes the above-briefly discussed and other deficiencies and disadvantages of the prior art and, in so doing, provides compact and highly efficient means for generating high intensity light pulses which are radiated in accordance with a desired directional pattern.
A light in accordance with the present invention may employ, as the light source, either a gaseous discharge tube or an incandescent lamp such as, for example, a halogen lamp.
The light source is housed within a lens cover which defines an axis and the source is positioned such that a point within the light emission region thereof lies on that axis.
The lens cover has a generally smooth outer surface whereby the lens cover may be easily cleaned and will not be subject to diminished light transmission because of an accumulation of dirt in surface irregularities.
The lens cover, in accordance with a first embodiment of the invention, is provided with a pair of spaced arrays of prismatic inner optics which directly receive and refract light emitted from the source.
The lens cover of this first embodiment also has regions, including an intermediate portion located between the arrays of prismatic inner optics, through which light will pass without significant redirection.
At least a first multi-quadrant reflector is positioned within the lens cover at the lower end thereof.
This reflector is coaxial with the lens cover and includes plural reflective surfaces arranged in a symmetrical, outwardly sloped pattern.
Each of these individual reflective surfaces portions of a surface of a paraboloid of revolution.
In another embodiment, these parabolic shapes are segments of a parabolic trough.
The plural reflective surfaces of each reflector all have a common focal point which is located on the axis of the lens cover at a point within the light emission region of the source.
In some embodiments of the invention, a second similar reflector will be positioned within the lens cover so as to be oppositely disposed from and facing the first reflector
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