Lighting Standards

SSL Specific Standards

IES LM-79-08 Electrical and Photometric Measurements of Solid-State Lighting Products

Describes the method of absolute photometry for LED luminaires and integral replacement lamps, and associated electrical measurements. Provides performance data (i.e., light output and efficacy, light distribution, and color characteristics) for the entire, integrated product—versus separate results for the light source (“lamp”) and luminaire provided by traditional relative photometry.

IESNA LM-80-2008 Approved Method for Measuring Lumen Maintenance of LED Light Sources

Describes the measurement of lumen maintenance—the amount of light output maintained over time—for LED packages, arrays or modules (i.e., devices). LED devices are operated for at least 6,000 hours at representative operating tempera­tures, with photometric data collected at a minimum of every 1,000 hours. Using modeling guidance from a proposed com­panion test method, IES TM-21, this “device-level” data can be applied to the integrated LED product to predict useful operating life and light output over time.

NEMA ANSI ANSLG C78.377-2008 Specifications for the Chromaticity of Solid State Lighting Products for Electric Lamps

Specifies the range of chromaticities recommended for general lighting with SSL products and ensures that the white light chromaticities of the products can be communicated to consumers. Applies to LED-based SSL products with control electronics and heat sinks incorporated. Does not cover SSL products for outdoor applications or SSL products for some indoor applications that intentionally produce tinted or colored light.

ANSI/IESNA RP-16-05 Nomenclature and Definitions for Illuminating Engineering

Advances in lighting technology (e.q. LEDs) have created new lighting terminology. Better measurement techniques have led to more international agreement in fundamental units and constants used in basic laws of physics. There is greater use of SI units today in illuminating engineering. This Standard reflects these changes with several new terms and definitions, and revisions in existing definitions.

IES G-2, Guideline for the Application of General Illumination (“White”) Light-Emitting Diode (LED) Technologies

Provides lighting and design professionals with a general understanding of LED technology as it pertains to interior and exterior illumination, as well as useful design and application guidance for effective use of LEDs.

NEMA LSD 45-2009, Recommendations for Solid-State Lighting Sub-Assembly Interfaces for Luminaires
Provides guidance on the design and construction of interconnects (sockets) for solid-state lighting applications.

NEMA LSD 49-2010, Solid-State Lighting for Incandescent Replacement—Best Practices for Dimming
Provides recommendations for the application of dimming for screw-based incandescent replacement solid-state lighting products.

NEMA SSL-1, 2010, Electronic Drivers for LED Devices, Arrays, or Systems
Provides specifications for and operating characteristics of non-integral electronic drivers (power supplies) for LED devices, arrays, or systems intended for general lighting applications.

NEMA SSL 3-2010, High-Power White LED Binning for General Illumination
Provides a consistent format for categorizing (binning) color varieties of LEDs during their production and integration into lighting products.

NEMA SSL-6, 2010, Solid State Lighting for Incandescent Replacement—Dimming
Provides guidance for those seeking to design and build or work with solid state lighting products intended for retrofit into systems that previously used incandescent screw base lamps. Addresses dimming of these products and the interaction between the dimmer (control) and the bulb (lamp).

UL 8750, Safety Standard for Light Emitting Diode (LED) Equipment for Use in Lighting Products
Specifies the minimum safety requirements for SSL components, including LEDs and LED arrays, power supplies, and control circuitry

Outdoor Lighting Standards

RP-8-00 American National Standard Practice for Roadway Lighting

This Recommended Practice provides the design basis for lighting roadways, adjacent bikeways, and pedestrian ways. It deals entirely with lighting and does not give advice on construction. It is not intended to be applied to existing lighting systems until such systems are redesigned. This Practice revises and replaces the previous edition which was published in 1983 and reaffirmed in 1993.

General Lighting Standards

LM-41-98 Approved Method for Photometric Testing of Indoor Fluorescent Luminaires

LM-46-04 Photometric Testing of Indoor Luminaires Using HID or Incandescent Filament Lamps

This approved method is intended to promote uniform test results as obtained under controlled laboratory conditions in measuring the luminous flux and intensity of high intensity discharge and incandescent indoor-type luminaires. All mercury, high-pressure sodium (HPS), and metal halide lamps are classified as High Intensity Discharge (HID) lamps, and their photometry when installed in indoor-type luminaires is covered by this method. Also covered are similar luminaire types employing incandescent lamps, including tungsten-halogen lamps.

LM-10-1996 Photometric Testing of Outdoor Fluorescent Luminaires

This Lighting Measurements Guide promotes adequate and uniform test methods for determining and reporting the photometric characteristics of outdoor fluorescent luminaires. These test methods, called far-field photometry and near-field photometry, are applied selectively depending on the type of lighting being evaluated. This Guide replaces a previous publication (with the same title) issued in 1983. This latest revision was prepared using the 1983 material, with the addition of photometry methods for compact fluorescent lamps, calculations of the appropriate lumen to candela factor (K) for linear sources, and an annex covering alternate methods of near-field photometry.

LM-31-95 Photometric Testing of Roadway Luminaires Using Incandescent Filament and HID lamps

The objective of this guide is to provide test procedures and methods of reporting data that will promote the uniform evaluation of the photometric performance of roadway luminaires using mercury, metal halide, high pressure sodium, or incandescent filament lamps. Low pressure sodium lamps are excluded because a consensus for proper testing methods could not be reached.

LM-35-02 Photometric Testing of Floodlights Using High Intensity Discharge or Incandescent/Filament Lamps

This Approved Method provides test procedures and methods of reporting data that will promote uniform evaluation of the optical performance of floodlights using various lamps such as metal halide, high pressure sodium (HPS), mercury, and incandescent. Low pressure sodium (LPS) and fluorescent lamps are excluded from this discussion.

LM-11-97 Photometric Testing of Searchlights

This guide applies to lighting equipment having a total beam spread of less than ten degrees. It includes equipment in which light is controlled by reflectors, lenses, or their combinations. It applies to projectors having any light source such as incandescent filament or halogen filament lamps, discharge lamps, open arc or other compact sources of high brightness that are capable of producing the specified beam spread.

LM-75-01 Goniophotometer Types and Photometric Coordinates

The information presented in this Lighting Measurements Guide describes the three types of goniophotometers available for photometric testing and the three coordinate systems used to describe photometric data

LM-63-02 Standard File Format for the Electronic Transfer of Photometric Data and Related

This document describes the ANSI/IESNA LM-63-2002 data system and how to build a file using this system. This recommended standard addresses photometric data file formats specifically for data transfer, however, it is recognized that this standard is often used for data storage and retrieval.

In Development

TM-21-11 Projecting Long Term Lumen Maintenance of  LED Light Sources

Will provide a method for determining an LED luminaire or integral replacement lamp’s expected operating life, based on initial performance data collected per IES-LM-80. IES TM-21 is currently in development, with multiple models being considered to address the potential degradation paths seen with different LED technologies. IES LM-79 performance testing is typically conducted by independent testing labs on behalf of manufacturers or testing programs like DOE CALiPER. Given its duration and space requirements, long-term testing under IES LM-80 is generally performed by LED device manufacturers.

CIE High Power LED standard and parallel IESNA standard

CIE TC1-69 Color Rendition by White Light Sources

IES xx Approved Method for the Characterization of LED Light Engines for Electrical and Photometric Properties as a Function of Temperature

ANSI C82.SSL1 Operational characteristics and electrical safety of SSL power supplies and drivers