October, 2024


www.us-tech.com Continued from previous page


Achieving Zero Defects in Conformal Coating... The Neptune provided accurate meas-


for rework or adjustments to the application process, reducing the risk of field failures and scrap. The Neptune performs non-destructive


inspections using technologies such as low- coherence interferometry and Near Infrared (NIR) light. This approach allows for thor- ough examination of the coating without damaging the material, ensuring the integri- ty of the coating. Non-destructive methods are particularly valuable for high-value or sensitive components. Integrating the Neptune into manufac-


turing allows for real-time monitoring and feedback. This capability enables manufac- turers to make immediate adjust- ments to the coating process, ensuring optimal application and reducing the likelihood of defects. Real-time data can fine-tune parameters and improve overall process control.


Koh Young LIFT Technology A key Neptune innovation is


LIFT (Laser Interferometry for Fluid Tomography) technology, which significantly enhances the measurement of coating thick- ness. LIFT employs low-coher- ence interferometry, a technique that captures detailed volumetric data through multiple layers of the coating. This advanced method of


laser interferometry generates coating thickness and uniformity measurements by analyzing interference patterns created by a laser, allowing for the measure- ment of the coating separately. This capability is particularly valuable for dealing with trans- parent or semi-transparent mat - erials, where traditional inspec- tion struggles. The high-resolution imaging


provided by LIFT ensures the Neptune detects even minute variations in thickness. This accuracy is crucial for maintain- ing the protective properties of the conformal coating. Moreover, LIFT technology identifies defects such as bubbles, voids, and inconsistencies in thickness, which are critical for maintain- ing the coating integrity. By integrating LIFT into the


inspection process, manufactur- ers achieve enhanced accuracy and improved process control. The non-contact, non-destructive measurements mean the coat- ing’s integrity is preserved dur- ing inspection. This allows for real-time feedback to reduce waste and improve quality.


Case Study Consider a manufacturer of


automotive electronics facing challenges with inconsistent con- formal coating application, lead- ing to a high rate of component failures due to environmental exposure. By implementing the Neptune for 3D inspection, the manufacturer achieved many improvements.


An inspection image of a coated board.


urements of coating thickness, allowing the manufacturer to adjust the application process and ensure uniform coverage. The 3D imaging capability of the Neptune identified


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bubbles and voids that were previously unde- tected, enabling corrective actions before the boards left the production line. The integration of real-time feedback


allowed for immediate adjustments, reducing the incidence of defects and enhancing over- all quality. As a result, the manufacturer saw a significant reduction in defect rates and an improvement in the reliability and durability of their electronic assemblies.


Broad Impact The benefits of true 3D inspection extend


beyond immediate defect detection. By provid- ing detailed insights into the process, the tech-Continued on page 58


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