Patent ID: 9611993
Date: 2017-04-04
CPC Classifications: B60Q,F21S,F21Y,G02B

Claim:
1. An emergency warning light mountable to an emergency vehicle, said emergency warning light comprising: a plurality of LED lamps each emitting light having a predetermined wavelength; an optical structure arranged to re-direct at least a portion of light emitted from the plurality of LED lamps into a wide angle beam of light visible to an observer outside of the emergency vehicle; and a lens disposed in a position where light from the LED light sources must pass through said lens to produce said emission pattern, said lens having an optical density of at least 0.071 that reduces or modifies the intensity of all wavelengths or colors of light equally, resulting in no substantial change in color of light emitted from the warning light relative to light generated by said plurality of LED lamps.