Optical sensor is a sensor that measures based on optical principles. It has many advantages, such as non-contact and non-destructive measurement, almost no interference, high-speed transmission, and telemetry, remote control, etc.

It mainly includes optical sensors and instruments such as general optical measuring instruments, laser interference type, grating, encoder and optical fiber type. It is mainly designed to detect the presence of objects, or to perform motion detection in various industrial, automotive, electronic products and retail automation.
Optical sensors mainly include: optical image sensor, transmissive optical sensor, optical measurement sensor, optical mouse sensor, reflective optical sensor, etc.
Uses: Optical sensors are widely used in aerospace, aviation, national defense scientific research, information industry, machinery, electricity, energy, transportation, metallurgy, petroleum, construction, post and telecommunications, biology, medicine, environmental protection and other fields.