US Patent No. 9,869,450

LIGHTING SYSTEMS HAVING A TRUNCATED PARABOLIC- OR HYPERBOLIC-CONICAL LIGHT REFLECTOR, OR A TOTAL INTERNAL REFLECTION LENS; AND HAVING ANOTHER LIGHT REFLECTOR


Patent No. 9,869,450
Issue Date January 16, 2018
Title Lighting Systems Having A Truncated Parabolic- Or Hyperbolic-conical Light Reflector, Or A Total Internal Reflection Lens; And Having Another Light Reflector
Inventorship Paul Pickard, Acton, CA (US)
Raghuram L. V. Petluri, Cerritos, CA (US)
Assignee ECOSENSE LIGHTING INC., Los Angeles, CA (US)

Claim of US Patent No. 9,869,450

1. A lighting system, comprising:
a truncated parabolic visible light reflector having an internal light reflective surface defining a cavity, and having an
end and another end being mutually spaced apart along a central axis, the end permitting light emissions from the lighting
system;

a light source being located at the another end of the truncated parabolic light reflector and including a semiconductor light-emitting
device, the semiconductor light-emitting device being configured for emitting, along the central axis in the cavity, light
emissions having a first spectral power distribution;

another visible light reflector, the another light reflector being located in the cavity and having another light reflective
surface facing toward the another end of the truncated parabolic light reflector, the another light reflector being spaced
apart along the central axis at a distance away from the semiconductor light-emitting device;

a volumetric lumiphor being located in the cavity along the central axis between the semiconductor light-emitting device and
the another light reflector, and being configured for converting some of the light emissions into additional light emissions
having a second spectral power distribution being different than the first spectral power distribution;

wherein the another light reflector is configured for causing portions of the light emissions and of the additional light
emissions to be reflected by the another light reflective surface;

wherein the truncated parabolic light reflector is configured for causing some of the portions of the light emissions and
additional light emissions, after being reflected by the another light reflective surface, to then be further reflected by
the light-reflective surface and to bypass the another light reflector to be emitted from the end of the truncated parabolic
light reflector; and

wherein the another light reflector is configured for permitting other portions of the light emissions and of the additional
light emissions to pass through the another light reflector along the central axis and then be emitted from the end of the
truncated parabolic light reflector.