5 New, Revised, Or Reaffirmed IES Standards

The IES has approved five new, revised, or reaffirmed lighting standards:

ANSI/IES RP-27-26 Recommended Practice: Photobiological Safety for Lighting Systems

Updates include new definition (angular subtense), removal of propagation of uncertainty for wavelength accuracy, improvements to measurement metrics, updates to the relative spectral weighting function for Assessing Actinic Radiation Hazard, and new equations for retinal blue light hazard exposure limits.

RP-27-25 is not yet available on the IES webstore.

ANSI/IES LP-10-26 Lighting Practice: Sustainable Lighting – An Introduction to the Environmental Impacts of Lighting

The IES and the International Association of Lighting Designers (IALD) define sustainable lighting design as “meeting the qualitative needs of the visual environment with the least impact on the natural environment.” Many lighting design professionals associate environmental impacts only with energy use, primarily because energy considerations are so dominant in lighting. The life cycle of a lighting system comprises stages or phases, beginning with the extraction of raw materials and including all stages of material processing, equipment and component production, transportation, use, maintenance, and end of life. Therefore, it is important to consider impacts from all phases of a product’s life cycle when assessing environmental impact. The intent of this document is to introduce the topic of sustainability, present its elements, and explain how it affects the design of lighting in process and product.

LP-10-26 is not yet available on the IES webstore.

ANSI/IES LP-12-26 Lighting Practice: IoT Connected Lighting

The purpose of this document is to serve as a design guide and to provide lighting professionals with the necessary information to consider and evaluate potential connected lighting and IoT solutions and applications. While the body of work represented within this text is meant to explore the most common and emerging commercial connected lighting solutions from the perspective of the lighting professional, the rapid pace of change within the lighting industry and available differentiation among partners and/or suppliers will likely require readers to conduct more-specific or supplemental research for a given application.

 LP-12-26 is not yet available on the IES webstore.

ANSI/IES TM-31-20(R26) Technical Memorandum: Measurement Uncertainty for Lighting Equipment Calibration Using Integrating Spheres

Uncertainty is inherent in every measurement. To truly understand the value of a measurement, the uncertainty of such should be analyzed. A critical step of this analysis is to know the uncertainty contributed by the instruments used to make the measurement. The intent of this document is to provide a common approach to the uncertainty analysis for calibration of lumen measuring equipment (integrating spheres) with standard incandescent lamps, including tungsten-halogen, that have been assigned values of total luminous flux and/or total spectral radiant flux. This document provides a detailed and step-by- step method for determining uncertainty of certain calibration procedures common to instruments used in lumen measurement laboratories. It uses the structure proposed in the Guide to the Expression of Uncertainty in Measurement (GUM) for its recommendations. For each calibration procedure presented in this document, a mathematical model is developed, estimates of each input quantity are discussed, and guidance is provided for the evaluation of the standard uncertainty of each input estimate. With this information, the combined standard uncertainty is calculated, effective degrees of freedom are calculated, and finally, the expanded uncertainty is reported.

TM-31-20(R26) is available here.

ANSI/IES TM-38-21(R26) Technical Memorandum: Photometric and Electrical Measurements of Tunable-White Solid-State Lighting Products

The ability to emit radiant power in hundreds or thousands of spectral combinations—only limited by the precision of the control signal being provided—poses a distinct challenge for measuring product performance. This TM establishes a common protocol for measuring photometric, colorimetric, and electrical characteristics of tunable-white solid-state lighting products—including lamps, luminaires, and light engines. It defines the minimum number and order in which measurements are to be made, and it provides a framework for data reporting. This TM also describes a method for interpolating between measured data, including for CCT range, Duv range, lumen output range (at full intensity control as color changes), efficacy at maximum output, efficacy range, color rendition, and chromaticity coordinates.

TM-38-21(R26) is available here.

David Shiller

David Shiller is the Publisher of LightNOW, and President of Lighting Solution Development, a North American consulting firm providing business development services to advanced lighting manufacturers. The ALA awarded David the Pillar of the Industry Award. David has co-chaired ALA’s Engineering Committee since 2010. David established MaxLite’s OEM component sales into a multi-million dollar division. He invented GU24 lamps while leading ENERGY STAR lighting programs for the US EPA. David has been published in leading lighting publications, including LD+A, enLIGHTenment Magazine, LEDs Magazine, and more.

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