Optical Sensors: Principles and Applications

This lecture covers the principles and applications of optical sensors, focusing on topics such as Doppler velocimetry, optical current sensors based on the Faraday effect, and optical pyrometry for non-contact temperature measurement. It also discusses optical gyrometers based on the Sagnac effect and the use of monochromatic and two-color pyrometers for emissivity measurements. The lecture delves into the theory behind these sensors and provides examples of their practical applications in various fields.