Horticultural luminaire having endcap with receiving sockets

A horticultural luminaire (100) for illuminating a portion of a crop having a vertical height that is measurable along an axis that is substantially vertical to ground level, the horticultural luminaire comprising:

• a solid-state light source (2) disposed on a substrate (4) and located within a lightsource housing (6);
• a lightguide (40) having a first longitudinal edge (42) and a second longitudinal edge (48) positioned opposite the first longitudinal edge;
• the lightguide having a longitudinal axis (L) extending along its length dimension, the lightguide further having a width (W) in a lateral direction along a width axis (X) perpendicular to the longitudinal axis (L);
• the lightguide defining at least one emission face (44;
• 46) extending between the first and second longitudinal edges (42, 48);
• the lightguide being optically coupled to the light source at the first longitudinal edge (42), the lightguide receiving light emitted from the light source and transmitting that light therethrough to the at least one emission face (44;
• 46);
• and
• at least one endcap (214) having a longitudinal extent along a height axis (H) generally transverse the longitudinal axis (L) of the lightguide and transverse to the width (W) axis (X) of the lightguide, the at least one endcap defining a lightguide-receiving socket (220) and, longitudinally adjacent thereto along the endcap height axis (H), further defining a lightsource housing-receiving socket (218);
• the at least one endcap (214) being coupled at the lightguide-receiving socket (220) to the lightguide (40), and the at least one endcap (214) further being coupled at the lightsource housing-receiving socket (218) to the housing (6) of the light source (2), whereby the at least one endcap (214) resists a separation of the lightguide (40) away from the housing (6) of the light source;
• and
• wherein the endcap is non-movably coupled to opposed longitudinal faces of the lightguide, said longitudinal faces extending along the longitudinal axis (L).