An Expert Lecture on “Optical Sensors" was conducted in the Conference Hall of Department of Electronics Engineering on 18/7/2016. The expert lecture was delivered by Prof. V. R. Singh, Scientist/Director/Distinguished Researcher/Head-Instrumentation/Sensors National Physic Lab New Delhi. The expert discussed about the various types of optical sensors and various application of these sensors. The speaker discussed in details about the sensors made. The student of B.Tech. / M.Sc. attended this lecture.