Line Confocal Imaging Technology in In-situ 3D, 2D and Tomographic Characterization of Specular and Transparent Parts, Assemblies and Continuous Products

J. Saily
FocalSpec - LMI Technologies (USA), Inc.,
United States

Keywords: 3D 2D tomographic imaging, high-speed, in-process, off-line, sub-micron resolution, challenging surfaces, glass, polymers, metals, multi-material


This paper introduces FocalSpec’s recently patented Line Confocal Imaging (LCI) technology that was developed to characterize 3D, 2D and tomographic features of various surface and material types at sub-micron resolution. LCI enables automatic microtopographic, intensity and tomographic multi-surface imaging of challenging objects and surfaces that are difficult or impossible to characterize with traditional methods at high enough speeds. Examples of well-suited applications for LCI include glossy, mirror-like, transparent and multi-layered parts and assemblies made of glass, polymers and metals in consumer electronics, medical device, printed electronics and other industries. LCI sensors operate at high speed and they can be used to scan fast-moving surfaces in real-time as well as stationary product samples in laboratory. Operational principle of the LCI method and its strengths and limitations are discussed. Various applications for LCI sensors and scanners on multiple material and product types in different industries are examined including measurement of surface roughness, dimensions, flatness, thickness, volume and inspection of random defects.