Machine Vision
Appearance Inspection with Machine Vision Systems
Maintaining product quality depends on accurate, consistent appearance inspection, especially for the subtle defects that traditional methods often miss. Machine vision systems from KEYENCE leverage advanced imaging technologies, including 3D measurement, pattern projection, and LumiTrax™, to isolate shape, surface, and material characteristics independent of color or lighting variations.
From sealant and gasket verification on automotive components to detecting surface flaws on electronics, batteries, gears, and rubber materials, these systems enable stable, high-precision defect detection across a wide range of applications. By combining flexible lighting options, multi-spectrum imaging, and high-resolution cameras, manufacturers can reliably identify defects such as scratches, dents, burrs, foreign particles, and inconsistencies in challenging inspection environments.
To illustrate how these advanced vision systems perform in real-world manufacturing environments, the following examples highlight common appearance inspection applications across automotive, electronics, battery, and packaging processes. Each application demonstrates how KEYENCE technologies overcome traditional inspection challenges, such as low contrast, inconsistent lighting, and difficulty distinguishing defects from surface variations, to deliver stable, high-precision results.
Choose Case of Appearance Inspection
ECU Sealant Coat Inspection
KEYENCE’s Pattern Projection Vision System uses 3D data to create contrast based on shape rather than surface finish or color. This enables reliable confirmation of sealant presence/absence, as well as measurement of width and volume, and detection of breaks in formed-in-place gaskets. Large-format lighting supports inspection across a wide field of view.
Intuitive Vision System CV-X series
Electronic Component Appearance Inspection
Surface inspection of printed and marked electronic components is often difficult with traditional vision systems. LumiTrax™ enables visualization of surface topography, allowing for stable detection of subtle surface defects.
Vision System with Built-in AI VS series
Appearance Inspection of Printed Battery Surfaces
Inspecting battery surfaces for dents and flaws is challenging due to difficulty distinguishing between printed markings and defects. LumiTrax™ eliminates 2D information such as printing, enabling detection of only true defects like dents and surface flaws.
Intuitive Vision System CV-X series
Differential Gear Appearance Inspection
Inspecting cylindrical components such as gears for stains, scales, and dents is challenging due to uneven lighting. Line scan cameras enable continuous imaging of cylindrical surfaces, while LumiTrax™ specular reflection mode allows detection of linear defects such as scratches and dents from a single image.
Line Scan Technology Line Scan series
Black Rubber Sheet Appearance Inspection
Wrinkles and foreign particles on black rubber sheets are difficult to detect due to low contrast. Shape-based imaging enables clear extraction of wrinkles and foreign materials for reliable inspection.
Line Scan Technology Line Scan series
Foreign Particle Inspection in Filled Products
Detecting contamination such as dirt or hair in packaging processes requires flexible lighting conditions. Multi-Spectrum lighting highlights slight color variations, enabling reliable detection of defective products only.
Intuitive Vision System CV-X series
O-Ring Burr Inspection
High-resolution imaging enables full-part inspection, allowing detection of even the smallest burrs on O-rings.
Customizable Vision System XG-X series
Appearance Inspection of Battery Housing
Inspection of battery housing for dents and scratches is critical for maintaining structural integrity. LumiTrax™ specular reflection mode enables stable detection by isolating defects from stains and surface variations.
Line Scan Technology Line Scan series
Wound Coil Appearance Inspection
Inspection of wound coils can be unstable due to reflections and color variation under conventional lighting. Multi-Spectrum lighting stabilizes inspection by extracting only defect areas for consistent detection.
