Luminaire module having a light guide with a redirecting end-face

A luminaire module comprising:

• one or more light-emitting elements (LEEs) arranged to provide light;
• and
• a light guide comprising:
• a receiving end and an opposing end, the receiving end arranged to receive the light provided by the LEEs;
• a pair of opposing side surfaces extending along a length of the light guide between the receiving end and the opposing end, the light guide configured to guide the received light about a forward direction via reflection of the light at the pair of opposing side surfaces, along the length of the light guide to the opposing end of the light guide;
• and
• a redirecting end-face located at the opposing end and configured to reflect the guided light that reaches the opposing end back into the light guide as return light, such that substantially all the return light impinges on at least one of the pair of opposing side surfaces at incident angles that allow transmission into the ambient as output light of the luminaire module, the output light to propagate in backward directions including obtuse angles relative to the forward direction,
• wherein the guided light that reaches the opposing end propagates in directions entirely different from directions of propagation of the return light, and
• wherein at least one of the opposing side surfaces is a non-planar, curved surface.