An optical coupler for use within a sink assembly comprising a countertop having
a countertop bore formed therethrough and a sink basin mounted above the countertop,
the basin having a bore co-axial with the countertop bore for receiving the terminal
end of a water drain pipe passing up through the countertop to the sink basin.
The light coupler includes a light coupler body having a lower portion received
through the countertop bore and an upper portion resting on the countertop about
the countertop bore. The water drain pipes passes up through a bore formed through
the light coupler body, the coupler further having a light-transmissive portion
coupling the lower portion with the upper portion. Light from a light source located
proximal the lower surface of the light coupler body lower portion is admitted
through the lower surface and transmitted up through the light coupler body and
out the upper surface to the sink basin.
