Abstract: An air purifier may include a filter chamber having a recessed panel. The recessed panel may include openings, a plurality of UV lighting elements, and a plurality of reflectors disposed on, above, below, and/or within the recessed panel to provide a more even distribution of radiation across a surface of a filter. In some embodiments the plurality of reflectors may take the shape of a hyperbolic cone. The plurality of reflectors may be disposed above and/or adjacent to the plurality of UV lighting elements. The plurality of UV lighting elements may be disposed below or within the recessed panel. The plurality of UV lighting elements may include lighting elements which emit Ultraviolet (UV) and/or Ultraviolet C (UVC) wavelength light, such as certain light emitting diodes (LED) light sources to irradiate a surface of the filter.