a lamp is provided which is suitable for use in low - profile applications . the lamp includes a light source and a lens . the lens includes a first surface opposite a second surface , where the second surface includes an injection surface and the first surface includes a multi - faceted optical element converging towards the injection surface . the light source injects light into the lens via the injection surface and the light refracts through the first surface while total internally reflecting off the first surface and the second surface toward the periphery of the lens .