In mobile phone manufacturing, the shield cover plays a critical role in electromagnetic shielding and motherboard stability. The flatness of the shield cover mounting surface directly affects assembly accuracy, shielding effectiveness, and long-term reliability of the device.

As smartphone designs move toward thinner structures and higher integration, shield covers become smaller while flatness tolerances tighten to the micron level. Manufacturers must achieve high-precision, full-surface flatness inspection at production-line speed. Traditional contact methods or partial sampling are no longer sufficient to support 100% inline inspection in mass production.

Key challenges include:

• Micron-level flatness deviation detection on small components (≈30 × 30 mm)

Stable repeatability under high-speed, continuous inspection

• Non-contact measurement to avoid deformation or surface damage

• Inspection cycle times compatible with automated assembly lines

Full technical break down here

SinceVision Solution: SR8060 3D Laser Profiler

01High-Precision Flatness Measurement: The SR8060 delivers Z-axis repeatability of 0.2 μm with ±0.02% F.S. linearity, enabling reliable detection of micron-scale flatness deviations. In validation testing, flatness repeatability reached 0.0016 mm, exceeding production requirements.

02Full-Surface 3D Scanning: Using non-contact 3D laser profile scanning, the SR8060 captures high-density point cloud data across the entire mounting surface. A reference plane is fitted using least-squares calculation, and flatness is evaluated from the maximum-to-minimum deviation across the surface, ensuring complete and objective flatness assessment.

03High-Speed Inline Inspection: Capability With scanning frequencies up to 67 kHz and an inspection cycle time of under 1 second per part, the SR8060 supports 100% inline inspection without slowing production throughput.