Welcome To The SSL Library
The final report from the IEA 4E Solid State Lighting Annex’s 2017 Interlaboratory comparison (IC 2017). This comparison had 36 participating laboratories from 19 countries with a total of 42 goniophotometric instruments, the largest interlaboratory comparison of such equipment ever undertaken. This comparison investigated the level of agreement in measurements of SSL products by various types of goniophotometers including near-field type and source-rotating type, as well as mirror-type goniophotometers which are most commonly used. IC
A summary of the literature on lifetime definitions for LEDs and LED products, including a look at failure mechanisms, accelerated life tests and test methods for estimating lifetime, and provides some recommendations. There is currently no agreement as to which test method can best estimate the lifetime of LED lighting products and the report thus addresses a key issue for regulators and industry interested in deployment of LED technologies
Public review draft of the updated Quality and Performance Requirements for LED Lighting Products released 25 November 2020, for comment by 25 January 2021.
Visual Perception under Energy-Efficient Light Sources – – Detection of the Stroboscopic Effect under Low Levels of SVM
Temporal light modulation (TLM, known colloquially as “flicker”) of light sources has visual, neurobiological, and performance and cognition effects on viewers.
This document describes the technical protocol used by the participating laboratories as well as by Nucleus Laboratories.
The objective of this task is to promote the use of the Commission Internationale de l’Eclairage (CIE) International Standard CIE S 025/E:2015 for light emitting diode (LED) based lighting products
A comprehensive report examining the energy cost of smart lamps.
This memo presents some of the national-level approaches, initiatives and ideas to accelerate and support LED lighting in the market by the IEA 4E SSL Annex member countries
This report addresses the issues of the potential effects of solid state lighting (SSL) products on human health. This work mainly focuses on glare issues, photobiological effects caused by the optical radiation on the eye and skin, flickering phenomena non-visual effects of light
This report presents an overview of published life-cycle assessments (LCA) of lighting equipment, answering questions on the basis of current research. The LCA methodology is used to assess the
Performance tiers proposed by governments participating in the IEA 4E SSL Annex.
The SSL Annex has published performance tiers associated with the following LED lamps and luminaires: Non-directional Lamps for Indoor Residential Applications, Directional Lamps for Indoor
In August 2012, the SSL Annex published four performance tiers associated with LED lamps and luminaires: Non-directional Lamps for Indoor Residential Applications, Directional Lamps for Indoor Residential Applications, Downlight Luminaires, and Linear
In August 2012, the SSL Annex published four performance tiers associated with LED lamps and luminaires: Non-directional Lamps for Indoor Residential Applications, Directional Lamps for Indoor