Thank you to everyone who joined us for the online minisymposium on December 8, 2025!
All recordings and presentation slides from the symposium are now available on the symposium page. You can watch the invited talks from Martijn Anthonissen, Julius Muschaweck, and Henning Rehn, as well as the introduction to this year’s design competition.
We are excited to announce the launch of our Nonimaging Optics Design Competition 2026 - The Square Peg Challenge! Can you fit a square peg through a round hole?
Your task is to design a reflective optical system that takes all light emitted from a cube-shaped source and guides it into a circular opening. The étendue is perfectly matched, so in theory it’s possible. The only question is: How?
Go to the competition page and start designing today. The submission deadline is June 1st, 2026.
May the best design shine through!
We are pleased to announce that the call for papers is now open for the conference on “Nonimaging Optics: Efficient Design for Illumination and Concentration XXI” at SPIE Optics + Photonics 2026.
See our call for papers for more details and abstract submission! The deadline for abstract submissions is February 11, 2026.
We look forward to receiving your contributions and seeing you in San Diego in August 2026!
Join us online on December 8, 2025 for a minisymposium to kick off the next Nonimaging Optics conference! We will feature three invited talks, the launch of our call for papers, and the introduction of next year’s optical design competition.
The symposium runs from 15:00-17:00 CET and is free and open to everyone. See the symposium page for more details and registration.
The complete proceedings from our 2025 conference are now available online. This peer-reviewed collection includes both papers and presentation recordings from the 20th anniversary conference.
You can access the proceedings through our proceedings page. We have also assembled a list of all previous conference proceedings of this conference series, so that you can explore the rich history of the conference.
Thank you to everyone who made this year’s conference a success, and we look forward to seeing you at next year’s event!