Optics and photonics are enabling technologies that are part of our daily lives—from energy efficiency to healthcare. Advancements in these areas will help us to better respond to social and environmental challenges of our future. Its these advancements that will be highlighted at the SPIE Optics + Photonics conference this August in San Diego, California. The conference topics include this year within the areas of nanoscience, organic photonics, optical engineering and applications, and astronomical instrumentation. With more than 55 conferences, over 3,000 technical presentations, 30 courses, 4,000 attendees, and 150 exhibiting companies, SPIE Optics + Photonics offers both classic and cutting-edge optics and photonics research, training, and product information. Join your peers at SPIE Optics + Photonics 2021 – and get the kind of technical information, professional training, hardware and market intelligence that is key to success in today's changing job and technology landscape. SPIE Optics + Photonics is the largest international, multidisciplinary optical sciences and technology meeting in North America. With three symposia, find the latest research in these four areas: Optical Engineering + Applications, NanoScience + Engineering, and Organic Photonics + Electronics.