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How can metrics and guidelines help us fix flicker?

October 12, 2023 | 12:00 pm - 1:00 pm EDT

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Temporal light modulation (TLM, or flicker) is an increasing phenomenon in indoor, outdoor, and vehicular applications, due to the widespread adoption of LED sources. Most LED lighting systems don’t produce problematic TLM, but for those that do, there has been a delayed recognition that certain TLM waveform characteristics and viewing conditions can result in distraction and disorientation, cognitive effects, and serious health consequences in some populations. Research into responses to TLM is under way, but guidance is needed now. This webinar will preview draft provisional guidelines and target values developed by the IES TLM committee to raise awareness and solicit input and discussion with dimmer, driver, and luminaire manufacturers.

The Illuminating Engineering Society (IES), in collaboration with Pacific Northwest National Laboratory (PNNL), is pleased to offer a special, five-part, free webinar series on “Big Questions” in the lighting industry today. Advanced lighting systems can provide improved occupant health and productivity, better control, increased use of data, all with more sustainable product design. At the same time, new capabilities raise a host of questions with significant energy and environmental implications. Lighting researchers tackle big questions, and this webinar series will share the latest perspectives from PNNL experts and partners in pursuit of the best answers.


Naomi Miller


Lia Irvin