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International Day of Light 2019 Celebrations

See photos from the global celebration

The International Day of Light comprises coordinated activities on national, regional, and international levels.

In May 2019, SPIE captured photos from these activities on this page and our social media channels.

Enjoy browsing the gallery below to see how communities around the world honored light and light-based technologies during IDL 2019. 

See the program for the 2019 flagship event that occurred in Trieste, Italy.

Photos from IDL 2019 Events