Lighting systems including asymmetric lens modules for selectable light distribution

A lighting system, comprising:

• a lighting module including a semiconductor light-emitting device configured for emitting light emissions along a central light emission axis;
• a first lens module including a first converging lens, the first converging lens being configured for causing convergence of some of the light emissions of the semiconductor light-emitting device to form converged light emissions along the central light emission axis having a first half-width-half-maximum (HWHM), the first converging lens having a first light output surface being spaced apart along a first lens axis from a first light input surface, the first converging lens further having a first total internal reflection side surface being spaced apart around the first lens axis and having a first frusto-conical shape extending between the first light input and output surfaces of the first converging lens;
• a second lens module including a second converging lens, the second converging lens being configured for causing convergence of some of the light emissions of the semiconductor light-emitting device to form converged light emissions along the central light emission axis having a second HWHM being different than the first HWHM, the second converging lens having a second light output surface being spaced apart along a second lens axis from a second light input surface, the second converging lens further having a second total internal reflection side surface being spaced apart around the second lens axis and having a second frusto-conical shape extending between the second light input and output surfaces of the second converging lens;
• and
• a third lens module including a first diverging lens having a third lens axis, the first diverging lens being configured for causing divergence of some of the converged light emissions away from the third lens axis, the third lens module including:
• a lens body having a light output surface spaced apart along a light transmission axis from a light input surface, the lens body having a longitudinal axis and a lateral axis, the longitudinal and lateral axes being transverse to the light transmission axis;
• the light output surface having an asymmetric curvilinear contour being formed by a convex region overlapping in directions along the lateral axis with a concave region, the asymmetric curvilinear contour uniformly extending in directions along the longitudinal axis;
• wherein the lighting system is configured for detachably installing the first lens module or the second lens module in the lighting module between the semiconductor light-emitting device and the third lens module;
• and wherein the lighting system is configured for aligning the first or second lens axis with the central light emission axis and the third lens axis.