International Day of Light 2020

See the Light on 16 May 2020.

OSA, IEEE Photonics Society, SPIE and the International Day of Light Steering Committee encourage our community to connect all events for 2020 day of light celebration with the See the Light campaign. Let's communicate the importance of the science of light and light-based technologies to the general public with one voice. Learn more at

Optics in Action Kit

To celebrate the 2020 International Day of Light, The Optical Society will be providing 80 "optics in action" kits to student chapters to utilize in their communities around the world. These kits contain lesson plans and experiments that can be leveraged to highlight concepts in optics and photonics and generate greater awareness of the impact of science on society! Each kit will have supplies for a classroom of 30 impacting over 2400 students globally. Deadline to apply through is: 15 January 2020. For questions or more information contact

International Day of Light Grants

In addition to the Optics Kits, chapters will have the opportunity to apply for a grant of up to $1,000 to support other events to support the IDL 2020. These events may include but are not limited to:

  • Community seminar on optics and photonics
  • Participation in a local science fair or similar
  • Production of a chapter's own optics experiments that can be distributed to neighboring schools
  • Other large scale ideas that a chapter has in mind to promote science locally

Deadline to apply through is: 15 January 2020. For questions or more information contact

Share the International Day of Light with your community.

Tag a photo and share the reason why you celebrate light on social media.

  1. Facebook: The Optical Society
  2. Twitter: The Optical Society
  3. Instagram: The Optical Society

Sample Tweet: On this #IDL2020, I encourage you to #seethelight because #optics and #photonics is the enabling technology of the 21st century! @OpticalSociety

Hosting an event? Promote your event by:

  1. Posting it to the official International Day of Light event page
  2. Tweeting details @OpticalSociety using #IDL2020 and #seethelight.