A New Quality Control Tool for Plastic Laser Welding: The JY-T980 Transmittance Analyzer
In today’s precision manufacturing, quality control blind spots in welding processes are increasingly becoming cost black holes for many enterprises. This is especially true for plastic laser welding—a technique whose adoption continues to expand rapidly. Uniformity of near-infrared (NIR) transmittance across weld components directly determines weld strength. Yet conventional single-point transmittance testing covers only a few fixed locations; anomalies at edges, corners, or seam joints of irregularly shaped parts are easily missed. In some automotive component manufacturers, rework and after-sales costs stemming from defective welds account for over 7% of total production costs annually.
At its core, transmittance measurement quantifies the transmitted optical energy after interaction between light of a specific wavelength band and the test material. Unlike general-purpose transmittance analyzers—which rely on point-by-point sampling—Jingyi Optoelectronics has developed the JY-T980 full-field transmittance analyzer specifically for plastic welding applications. Leveraging a customized area-sensor photodetector array, the instrument converts nanowatt-level light-intensity variations into discernible electrical signals. Its proprietary digital filtering algorithm effectively suppresses interference from ambient light and circuit noise, ensuring transmittance measurement accuracy with deviations controlled to within 0.1%—fully compliant with automotive-grade quality requirements.
Compared to traditional inspection solutions, the JY-T980’s key breakthrough lies in its ability to perform simultaneous, full-field detection. Without moving either the sample or probe, it captures NIR transmittance data across every pixel of the entire field in under a fraction of a second—achieving up to a tenfold increase in speed versus conventional multi-point sequential scanning. This enables seamless integration into high-speed inline 100% inspection workflows. Moreover, users can freely define inspection regions based on part geometry and process requirements—even setting distinct transmittance pass/fail thresholds for different zones of the same part. The system automatically performs real-time data comparison and judgment, delivering immediate OK/NG verdicts. Even new operators require just one hour of training to achieve independent operation, eliminating cumbersome manual verification steps.
The JY-T980 is already deployed across multiple automotive component production lines. As a pre-weld inspection tool for critical areas—including instrument panel seams, rearview mirror bracket weld zones, engine-peripheral plastic sealing components, and headlamp lens bonding interfaces—it has reduced welding defect rates from 3.2% to below 0.1%, with zero false negatives. Per production line, this translates to annual savings of nearly one million RMB in rework costs. Building upon the JY-T980’s underlying technology platform, Jingyi Optoelectronics is further extending its capabilities to diverse application scenarios: full-field solar heat gain coefficient (SHGC) measurement for architectural glass; uniformity assessment of photovoltaic cover glass transmittance; optical consistency verification of aircraft windshield materials; and even aerosol concentration monitoring in environmental applications—all achievable through targeted adjustments of detection wavelength bands and optimization of analytical algorithms.
As industrial quality control standards evolve from “sampling-based compliance” toward “100% part-level assurance,” scenario-specific, custom-built inspection equipment is becoming the industry norm. Companies like Jingyi Optoelectronics—deeply rooted in optical metrology—are translating broad optical technologies into highly specialized, application-tailored solutions by rigorously deconstructing downstream user needs. In doing so, they deliver tangible, implementation-ready technological support for the next generation of manufacturing quality control.
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