Extending 3D MRS Sensor Technology to Address Challenging Measurement and Inspection ApplicationsAuthors: Dick Johnson and John Hoffman Ph.D.
Company: CyberOptics Corporation
Date Published: 10/14/2018 Conference: SMTA International
Phase shift profilometry (PSP) is widely used for 3D automated optical inspection (AOI) by electronics manufacturers assembling printed circuit boards (PCB) using automated surface mount technologies (SMT). Conventional PSP measurements are significantly challenged by inaccuracies caused by multiple reflections between surfaces on the inspected object. Multiple Reflection Suppression (MRS) sensor technology addresses this challenge. The sensor’s unique optical architecture and the system’s proprietary image fusing and processing algorithms provide fast, accurate 3D characterization capabilities that are well suited to other important applications, including solder paste inspection (SPI) and measurements typically performed by coordinate measurement machines (CMM).
Coordinate measurements can now be attained in seconds, rather than the hours or days it would take a traditional coordinate measurement machine. MRS sensor technology provides significant advantages in speed, accuracy and resolution over the alternate technologies. This technology is a key building block for achieving high accuracy at production speed for Automated Optical Inspection (AOI), Solder Paste Inspection (SPI) and Coordinate Measurement (CMM) applications.
AOI, 3D Inspection, SPI, multiple reflection suppression, MRS, CMM
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