Laser displacement sensors are devices that use laser beams to measure the distance between the sensor and an object. They work by emitting a laser pulse and calculating the time it takes for the light to reflect back. This technology allows for precise measurements, making it useful in various applications, such as industrial automation and quality control. These sensors can detect minute changes in position, which is essential for tasks like monitoring the thickness of materials or ensuring proper alignment in manufacturing processes. Their non-contact nature also means they can measure without touching the object, reducing the risk of damage.