Maria Montero

The new Eye Vision technology displacement sensor ensures …

The EyeScan AT 3D Max can scan the smallest details with a measurement resolution of 1 µm.

Eye Vision Technology’s displacement sensor offers high scan rates over a full measurement range and full-resolution images (profile points). With accurate high dynamic range (HDR), maximum contrast and high speed of up to 100 kHz can be achieved over the full measurement range.

Laser line displacement detection

The measurement process used is called laser line offset detection, as an object to be measured moves below a projected laser “line”. The process is illustrated in the image below.

The EyeScan AT3D MAX. Image source: Eye Vision Technology.

The displacement sensor, at the top of the image, projects its laser line onto the circular part that is being inspected at the bottom of the image. As the circular part moves along the belt, it is scanned in its entirety and a 3D image is generated.

EyeScan AT 3D Max can achieve perfect scans even when dealing with highly reflective surfaces or dark surfaces. This means that users can inspect glossy pins on black plastic, as well as labels printed differently on bottle caps. These can shine like silver or appear in any combination of softer color hues. The device can do it in full resolution and at full speed.

The unit uses its own EyeVision software. With just a few clicks of the mouse, 3D assessments can be performed for the automotive or electronics industry, as well as assessments for the food and beverage industry.

Built-in integration

The EyeScan AT 3D Max is compatible with leading industry interfaces such as the UR Robot command and the Profinet stack.

With these integrations, users can quickly connect the displacement sensor with a wide variety of manufacturing or inspection systems.

Other laser measurement sensors

Although the Eye Vision technology sensor brings new levels of speed and resolution to the displacement sensor, laser sensor measurement is not a new technology, and it has other applications beyond displacement sensors. Here are some other notable players.

• The Cognex DSMax offers a 20 kHz scan speed over the full measurement range and maximum resolution images (2,000 profile points). In the image below, an object to be inspected is about to pass through the device’s laser projection.

The DSMax 3D Laser Displacement Sensor. Video screenshot courtesy of Cognex.

• Micro-Epsilon offers a wide and varied line of laser sensors, including the optoNCDT 2300LL laser line sensor. It has adjustable measurement rates up to 49,140 kHz.


Have you used a displacement sensor before? What applications do you think this would be useful in development? Let us know in the comments below.