Detecting Circuit Board Defects Posted in: Profiling Measurement – Tags: Electronics Manufacturing
Last Updated: March 20, 2023
Confocal Displacement Sensors Measure Circuit Board Defects
Confocal Displacement Sensors Are Used to Scan the Backdrill Holes of Circuit Boards
Circuit boards have complex designs and their sizes are becoming tinier and tinier. Companies that specialize in PCB inspection systems need ultra-precise measurement sensors to profile tiny features like holes, solder joints, pin locations, etc.
One integrator uses the CCS Prima Confocal Displacement Sensor to scan the back surface of circuit boards to detect and measure defects in back drill holes. The position and depth of these holes are critical to their proper function. The narrow beam of the confocal sensor traces the complete profile of the board and can measure the true depths of these narrow holes. This is something triangulation laser sensors can’t do because of occlusion of the reflected beam path.
The same technology is used to measure the tiny connector pins for the detection of missing, bent, crushed or misaligned pins and connectors.
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ZENITH Confocal Measurement System Controller
The Zenith controller is a next generation solution for non-contact, confocal measurements. Paired with a confocal pen, the Zenith controller can take measurements of unrivaled accuracy on surfaces where lasers struggle. Depending on the confocal pen chosen, the Zenith controller can take measurements with errors as low as +/- 35 nanometers. A new Dual Channel version can support two pens for simultaneous, synchronized measurement perfect for thickness applications.
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