The Institute of Precision Optical Engineering （IPOE） at Tongji University has been established for 20 years， targeting at exploring the cutting-edge scientific problems， breaking through the core technologies， and serving the national key applications. With the characteristics of combination of theory and simulation， integrated solutions to scientific problems and key technological breakthroughs， mutual promotion of fundamental research and essential applications， IPOE forms its development philosophy and builds a high-level research platform. So far， IPOE has achieved many outstanding innovations in the research areas of X-ray devices and systems， high power laser coating and applications， optical nanometrology and measurements， and micro-nano optics and intelligent sensing， thus becoming a center for talented researchers' cultivation and high-level scientific research.