The Optical Sensors subcategory within Sensors & Measuring Devices includes devices that detect and measure changes in light properties to assess various physical quantities or detect objects. These sensors are crucial in applications ranging from medical diagnostics to industrial automation and environmental monitoring. Optical sensors utilize technologies such as photodiodes, phototransistors, and CCD sensors to measure light intensity, wavelength, and polarization. They are essential for ensuring precision in systems that require accurate light analysis, such as quality control, fluid dynamics, and advanced technologies like autonomous vehicles and smart infrastructure.