Application Notes

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Burrs on processed metal goods

Micron-sized shape measurement using a laser microscope

Burr
Burr

Application

Metal parts and processed goods are formed through the cutting and grinding of metal using various machining tools and processing methods. Typical metal processing includes "turning" (rotating a cylindrical or disk-shaped workpiece) and "milling" (rotating the tool to cut the workpiece), and these types of processing methods may leave a raised edge known as a burr on the surface. The burr is usually an unwanted piece of metal material. Burrs may have several adverse effects, preventing the component from fully serving as a connector, or causing injuries when the completed workpiece is touched. Therefore, deburring is an essential step in metal processing. In this step, it is important to accurately image the component’s shape to evaluate whether or not the burr has been properly removed.

The Olympus solution

Olympus' OLS5000 3D laser scanning microscope uses a 405 nm semiconductor laser and a confocal optical system to easily capture 3D images of micron-sized burrs formed during machining and perform accurate height measurement, enabling you to determine if burrs are present. The microscope also has superior detection ability for slopes, so you can even image burrs that have a steep inclination.

Images

Standard microscopic image of metal burr

LEXT OLS5500

Hybrid 3D Optical Profilometer

  • Traceable surface measurements from the nanometer to micrometer scale
  • Laser scanning microscopy (LSM), white light interferometry (WLI), and focus variation microscopy (FVM) in one award-winning platform
  • First 3D optical profilometer to offer guaranteed accuracy and repeatability* for both LSM and WLI measurements
  • WLI mode delivers up to 40x faster measurement throughput than conventional LSM
  • Exceptional precision across surfaces with in-house engineered optics
  • Intuitive interface and smart automation streamline operation for users of all levels
  • AI-enhanced and high-throughput workflows with PRECiV™ software integration

*Based on Evident’s internal research as of October 2025. The guaranteed accuracy and repeatability apply only if the device has been calibrated according to the manufacturer’s specifications and is in defect free condition. Calibration must be performed by an Evident technician or an Evident-authorized specialist.

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LEXT OLS5100

The LEXT™ OLS5100 laser scanning microscope combines exceptional accuracy and optical performance with smart tools that make the system easy to use. The tasks of precisely measuring shape and surface roughness at the submicron level are fast and efficient, simplifying your workflow and delivering high-quality data you can trust.