2D/3D Laser Profile Sensors

Achieve precision and speed with MTI’s 2D/3D Laser Profile Sensors, ideal for real-time measurement of weld seams, adhesive beads, step heights, thickness, flatness, and alignment across curved or complex surfaces. Using advanced CMOS and laser triangulation technology, these profile sensors create detailed 2D profiles and accurate 3D models for quality control and process automation.

Built for easy integration with PLCs and HMIs, ProTrak™ 2D/3D laser profile sensors feature plug-and-play setup, built-in displays, and SDKs for LabVIEW, C++, and .NET. With scan rates up to 6,000 Hz and resolution as fine as 2.5 microns, they perform reliably on shiny, dark, or textured surfaces. Available in red or blue laser options and multiple ranges, these rugged, IP-rated systems handle tough environments without bulky setups.

ProTrak G: 2D/3D Laser Profile Sensor

The ProTrak G series are compact laser profiling sensors that fit in tight spaces. These 2D/3D sensors provide accurate profiling, height, width and positioning measurement using the latest CMOS technology with fast measuring rate of up to 4,000 Hz.

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ProTrak HD: 2D/3D Laser Profile Sensor

The ProTrak HD long range profiling laser displacement sensor is built to satisfy the most demanding automated dimension, angle, curvature and height in the industrial application. At a fast speed of 6,000 frames per second and up to 2.5µm resolution, it also has measuring of up to 800 mm.

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Key Features & Benefits

  • Capture high-speed 2D profiles and synchronized 3D models in real time
  • Ultra-precise resolution (as low as 2.5 µm) ensures fine detail detection
  • Wide range of measurement options (36 mm to 800 mm) for diverse use cases
  • Supports metal, plastic, ceramic, and glossy surfaces without accuracy loss
  • Integrated encoder input enables synchronization for full 3D scanning
  • Software SDKs for LabVIEW, .NET, C++, and GigE vision support
  • Easy setup with onboard display and intuitive controls
  • Red and blue laser options for optimal performance on any surface
  • Compact, industrial-grade design fits tight spaces and withstands harsh conditions
  • Ideal for automotive, aerospace, electronics, metalworking, and packaging lines

Laser Line Scanner Measurement Principles

MTI’s ProTrak™ laser displacement sensors use the triangulation principle to capture 2D height profiles of a target surface. A laser projects a diverging line onto the object, which is then diffusely reflected and focused onto a high-speed CMOS camera. The sensor processes this line image to generate precise X-Z data points at high frame rates—up to 6,000 Hz (ProTrak-HD) or 4,000 Hz (ProTrak-G).

When the sensor moves along the target (or the target moves beneath the sensor), it collects sequential 2D slices, which can be combined to form a complete 3D surface profile. Encoder inputs enable accurate synchronization with object motion, ensuring consistent and calibrated 3D measurements.

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FAQs

A 2D/3D laser profile sensor is a non-contact measurement device used to capture precise dimensional data from objects in motion or at rest. It uses a laser line and a CMOS camera to create accurate cross-sectional profiles (2D) of a surface. When these profiles are collected over time—typically by moving the sensor or the object—they can be combined to generate a 3D model of the object’s surface.

These sensors measure a wide range of parameters including thickness, width, height, step profiles, gaps, flushness, warpage, angles, flatness, and surface deviations—ideal for quality inspection and dimensional control.

Common industries include automotive, aerospace, electronics, metalworking, packaging, robotics, and semiconductor manufacturing, where precision, speed, and repeatability are critical.

MTI’s sensors offer resolutions as fine as 2.5 microns, ensuring accurate and repeatable measurements even on highly detailed surfaces or tight tolerances.

Yes. Available with both red and blue lasers, these sensors are optimized for a variety of surface finishes, including reflective metals, black rubber, and transparent materials.

Yes. With measurement rates up to 6,000 frames per second, they deliver real-time data ideal for high-speed production environments.

All MTI sensors come with an SDK and intuitive software interface compatible with LabVIEW, .NET, C++, and GigE Vision platforms, allowing easy integration with existing systems.

Yes. By scanning along the target and using encoder input, the sensor captures multiple 2D slices to construct a full 3D model of the surface or object.

Typical uses include weld seam inspection, adhesive bead measurement, gap and flush detection, component alignment, step height analysis, and metal and plastic profiling.

Blue lasers offer better stability and accuracy on highly reflective or transparent surfaces, while red lasers are ideal for general-purpose applications on standard materials.

With built-in Gigabit Ethernet (GigE) connectivity and encoder synchronization, these sensors easily integrate with PLCs, HMIs, and custom automation software.

Yes. MTI’s 2D/3D profile sensors are built with IP-rated housings and durable materials to perform reliably in harsh conditions such as vibration, dust, and high humidity.

While the terms are often used interchangeably, there is a subtle difference in focus. A laser profile scanner typically refers to the complete system that scans across a surface to capture 2D or 3D profiles. It emphasizes the scanning action and may include additional components like encoders or motion systems. In contrast, a laser profile sensor specifically refers to the sensor hardware that performs the measurement using laser triangulation. It’s often used when discussing the integration of the device into automation systems or inspection setups. Both serve the same purpose—capturing precise surface data—but the term used may depend on whether the focus is on the scanning system as a whole or the sensor itself.