Photometric Testing


Count on UL to help navigate the global compliance maze. We provide the trusted independent product performance testing needed to meet regulatory demands. Our comprehensive portfolio of lighting verification services is aimed at providing flexibility, control and faster time to market.

As the demands for energy efficient technology continue to transform the lighting business, our customers leverage UL's 30-years of industry expertise and leadership to gain a competitive advantage around the world.


UL's photometric testing services provides comprehensive testing and reporting for Illuminating Engineering Society of North America (IESNA) and other lighting standards including:

  • U.S. Department of Energy (DOE) Lighting Facts Label
  • Design Lighting Consortium
  • Solid-state lighting (IES LM-79, CIE 127)
  • LED package/array/module (IES LM-80)
  • Compact fluorescent lamps (IES LM-65, LM-66)
  • Fluorescent lamps (IES LM-9, IES LM-40, IES LM-41)
  • Incandescent filament lamp (IES LM-49)
  • Photobiological safety (IEC 62471, CIE S009)
  • Zhaga testing

UL is a market leader in the lighting industry. We have 30 years of experience testing indoor, outdoor, aviation, automotive and solid-state lighting (SSL) products. Our team of experts works with the U.S. Department of Energy, Natural Resources Canada and other energy efficiency institutions around the world.

We provide independent product performance testing needed to demonstrate compliance with international standards using data from an independent, objective source. And UL offers fast turnarounds, completing most photometric tests within 10 business days.

UL’s compliance reports adhere to the standard formats required by IESNA and the International Commission on Illumination (CIE). Our reports can also be customized to meet customer specifications. Photometric characteristics are provided in easily compared file formats for demonstrating the commercial viability of lighting products.

As a leading producer of photometric equipment, including goniophotometers, lamp life test stations and screen photometric systems, many of UL’s photometric testing services utilize equipment that we design and manufacture, giving our customers access to the most sophisticated photometric testing innovations.

Members of our team are pioneers in the LED testing industry, and active members of standards development organizations, enabling us to provide our customers with much more than raw testing data. We help lighting manufacturers leverage their UL testing to understand customer performance expectations, clarify competing product claims and better understand international testing requirements.


Or, for more information on photometric testing services, call us at






LED light sources and luminaires, incandescents, compact fluorescent lamps, fluorescent and discharge lamps energy-saving lamps, HID lamps, street lighting, automotive lighting, traffic lights, office lighting, garden lighting and others


IES LM-79 This approved method describes the procedures to be followed and precautions to be observed in performing reproducible measurements of total luminous flux, electrical power, luminous intensity distribution and chromaticity, of solid-state lighting (SSL) products for illumination purposes, under standard conditions
IES LM-80 Measuring lumen maintenance of LED light sources is the industry standard that defines the method for testing LED lamps, arrays and modules to determine their lumen depreciation characteristics and report the results
IES LM-82 Approved test procedure method for the characterization of LED light engines and integrated LED lamps for electrical and photometric properties as a function of temperature
IES LM-65 The life testing of single-ended compact fluorescent lamps
IES LM-66 The electrical and photometric measurements of single-compact fluorescent lamps
IES LM-49 The approved method for life testing of filament lamps. It is the test report required for NRCan certification
IEC 62471 Offers the guidance for evaluating the photobiological safety of lamps and lamp systems including luminaires
Zhaga Consortium Creates specifications that enable interchangeability of LED light sources made by different manufacturers. This simplifies LED applications for general lighting
ENERGY STAR® Energy efficiency guidelines set by the EPA and DOE
LED Lighting Facts Label DOE program requiring labeling metrics on lumens, watts, efficacy, color rendering index and correlated color temperature. May also include warrantee and LED lumen  maintenance
DesignLights Consortium (DLC) Collaboration of utility companies and regional energy efficiency organizations — is committed to raising awareness of the benefits of efficient lighting in commercial buildings
International Commission on Illumination (CIE) CIE is responsible for the international coordination of lighting related technical standards
IEC 62471 Radiation of LEDs/lamps for potential hazards
CIE S 009 Photobiological safety of lamps and lamp systems
IES LM 9 Electrical and photometric measurement of fluorescent lamps
IES LM 40 Life testing of fluorescent lamps
IES LM 41 Photometric testing of indoor fluorescent luminaires