Lighting system generating a partially collimated distribution comprising a bowl reflector, a funnel reflector with two parabolic curves and an optically transparent body disposed between the funnel reflector and bowl reflector

A lighting system, comprising:

• a bowl reflector having a rim defining a horizon and defining an emission aperture, the bowl reflector having a first visible-light-reflective surface defining a portion of a cavity, a portion of the first visible-light-reflective surface being a first light-reflective parabolic surface;
• a funnel reflector having a flared funnel-shaped body, the funnel-shaped body having a central axis and having a second visible-light-reflective surface being aligned along the central axis, the funnel-shaped body also having a tip being located within the cavity along the central axis, a portion of the second visible-light-reflective surface being a second light-reflective parabolic surface and having a cross-sectional profile defined in directions along the central axis that includes two parabolic curves that converge towards the tip of the funnel-shaped body;
• a visible-light source including a semiconductor light-emitting device, the visible-light source being configured for generating visible-light emissions from the semiconductor light-emitting device;
• an optically-transparent body being aligned with the second visible-light-reflective surface along the central axis, the optically-transparent body having a first base being spaced apart along the central axis from a second base and having a side surface extending between the bases, and the first base facing toward the visible-light source;
• wherein the second light-reflective parabolic surface has a ring of focal points being located at a first position within the cavity, each one of the focal points being equidistant from the second light-reflective parabolic surface, and the ring encircling a first point on the central axis;
• wherein the second light-reflective parabolic surface has an array of axes of symmetry intersecting with and radiating in directions all around the central axis from a second point on the central axis, each one of the axes of symmetry intersecting with a corresponding one of the focal points, the second point on the central axis being located between the first point and the horizon of the bowl reflector;
• and
• wherein the visible-light source is within the cavity at a second position being located, relative to the first position of the ring, for causing some of the visible-light emissions to be reflected by the second light-reflective parabolic surface as having a partially-collimated distribution.