Case Study

3D Line-Scan / Laser Inspection

Production deployment of depth-based metrology — range and height images, profile data, VisionPro 3D tooling, and traceable customer evidence.

Keyence LJ-XVisionPro 3DRange ImagesGlobal Deployment

Problem

Fine-pitch connector and assembly features need height, coplanarity, and profile data that 2D vision alone cannot reliably extract. Customers also require traceable evidence packages, not just a pass/fail bit.

Approach

  • Integrate Keyence LJ-X laser profilometer heads into Cognex VisionPro via a proprietary C# acquisition interface.
  • Configure Ethernet streaming, external batch-start control, and model-based Y/Z pitch management.
  • Convert range/height images into VisionPro 3D tools and 2D tool-conversion workflows.
  • Validate baseline repeatability, multi-component testing, and output formats before production handoff.
  • Support onsite deployment across Vietnam, Mexico, the US, Taiwan, and Thailand.

Result

Expanded UIC inspection capability from 2D-only workflows into a production-ready laser line-scan / Cognex hybrid architecture with reviewable metrology output and field-validated repeatability.

2D/3D
Hybrid metrology
6
Deployment regions
CSV+BMP
Evidence output

My role

Lead vision engineer for acquisition, tooling, and deployment — I wrote the proprietary C# interface that streams LJ-X profiles into VisionPro (Ethernet configuration, external batch-start control, model-based Y/Z pitch management), built the 3D tool workflows, and ran onsite qualification, training, and handoff.

Stack

Keyence LJ-X seriesCognex VisionPro 3DC# / .NET CogImage16RangeTCP/IP streamingHeight / luminance images
Laser profilometer scanning a connector with 3D height map overlay Connector tray inspection geometry
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