1. A light-emitting device, comprising:a light emitting diode (LED) die mounted on a substrate; and
a solid molded lens surrounding the LED die, the lens having a width that is smaller than a width of the substrate, the lens being affixed to the substrate via an adhesive material, and the lens having a non-flat bottom surface including:
(a) a plurality of angled first surface portions arranged to define a first continuous groove that surrounds the LED die and a second continuous groove that surrounds both the LED die and the first continuous groove, the plurality of angled first surfaces arranged over a substantially flat portion of the substrate; and
(b) a second surface portion surrounding the LED die that is substantially parallel to the substrate, the second surface portion being affixed to the substrate via the adhesive material, the second surface portion being situated between the first continuous groove and the second continuous groove; and
a gap between the plurality of angled first surfaces arranged and the substantially flat portion of the substrate.