
April 26–30, 2026
National Harbor, MD
SPIE Defense + Security is the leading conference for sensing, imaging, and photonics technologies for the defense and security communities. Attendees can expect many technical presentations, expert-led training courses, and a vibrant exhibition featuring top suppliers showcasing cutting-edge innovations, from infrared and laser systems to AI-assisted sensing and autonomous platforms. Whether you’re seeking collaboration, funding opportunities, or the latest breakthroughs, this is where the future of defense and security meets photonics.