Linea HS2 TDI Line Scan Camera

What is TDI?

Time Delay Integration (TDI) is a specialised line scan imaging technology designed for applications where objects move at high speed or where lighting is limited. Unlike conventional line scan cameras that capture a single line of pixels, a TDI camera uses multiple sensor stages to capture the same object repeatedly as it moves across the sensor. These images are then combined electronically, significantly increasing the amount of light collected without introducing motion blur.

The result is a much brighter, cleaner image with a higher signal-to-noise ratio, making TDI cameras ideal for light-starved machine vision applications where traditional cameras may struggle.

How does TDI imaging work?

A TDI camera synchronises th movement of the object with the transfer of charge across multiple sensor stages. As the object moves through the camera's field of view, each stage captures another exposure of the same feature. The camera adds these exposures together, creating a single high-quality image while maintaining extremely high inspection speeds.