How do we ensure SSL product quality? How can we be confident that product test results are reliable? One of today's challenge is a lack of global agreement on SSL test standards and mutual recognition of regional accreditation programmes. This situation creates trade barriers and increases the overhead costs of doing business, slowing down the adoption of LEDs and associated energy savings.
The IEA 4E SSL Annex is working with testing laboratories and accreditation bodies to address these challenges. By comparing 110 LED testing laboratories around the world, the 2013 Inter-laboratory Comparison (see Final Report) produced a common proficiency test that:
Assess the relevance and application of new CIE TC2-71 test method for the purpose of government-led testing and enforcement activities (see the task on the application of new test methods).
Validating and determining LED product lifetime can be challenging. The Annex will research and synthesize credible findings from lifetime studies (see lifetime study review) and test methods in support of policy-making (see policy maker guidance on lifetime).
The SSL Annex's 2013 Interlaboratory Comparison focused on establishing a common proficiency test for accreditation. The next phase of this work has been to develop a global interlaboratory comparison for goniophotometers which was launched on 30 June 2017. (see interlaboratory comparison).