scope:

The photometry of luminaires with high intensity discharge (HID) lamps, including mercury vapor, highpressure sodium (HPS), or metal halide lamps, is covered by this method. Also covered are similar luminaire types employing incandescent lamps, including tungsten-halogen lamps. For the unique testing requirements of entertainment lighting luminaires (i.e., for stage, TV, or film) using HID and incandescent lamps, the reader should consult ANSI/IES LM-73-18, Approved Method: Photometric Testing of Entertainment Lighting Luminaires Using Incandescent Filament or High-Intensity Discharge Lamps.¹ Because of their special characteristics, lowpressure sodium lamps and fluorescent lamps are not discussed in these procedures. For information on fluorescent lamp testing, the reader should consult ANSI/IES LM-41-20, Approved Method: Photometric Testing of Indoor Fluorescent Luminaires.²