Convex Surface Inspections: Seeing Clearly on Curved Surfaces
Not all surfaces are created equal — and when it comes to visual inspections, convex shapes can be especially tricky. From polished bearing housings to rounded bottle caps or domed covers, curved surfaces introduce unique challenges for defect detection and dimensional checks. But with the right imaging approach, even the most reflective or irregular convex parts can be inspected with confidence.
Why Convex Surfaces Are Challenging
Curved geometry bends light, introduces shadows, and can distort apparent features in captured images. On top of that, surface reflections can confuse traditional vision systems — especially when parts have glossy or metallic finishes. That means scratches, dents, and even dimensional deviations can easily go undetected without specialized solutions.
This is where expert-level convex surface inspection makes all the difference.
How We Tackle It
At QuaVis, we design inspection systems specifically for the geometry of the part — and convex surfaces require a refined touch. Here’s how we do it:
- Dome & Diffused Lighting: Instead of relying on direct illumination, we use uniform lighting setups that reduce glare and enhance defect contrast on rounded parts.
- Multi-Angle Imaging: We position multiple cameras (or rotate the part itself) to capture the full surface — no blind spots, no missed defects.
- Optics That Match Geometry: Using telecentric lenses or wide-field optics helps maintain true dimensions across curved profiles.
- Surface-Adaptive Algorithms: Our software understands curvature — it distinguishes between natural geometry and true surface anomalies like scratches, bumps, or pits.
What We Look For:
- Surface scratches, scuffs, or abrasions
- Dents, bulges, or indentations
- Coating inconsistencies or defects
- Shape deformation or warping
- Misalignments and dimensional issues
Real-World Applications
Convex surface inspection is used in a wide range of industries — from automotive parts like valve domes or mirror housings, to consumer goods such as cosmetic packaging or appliance knobs. In each case, precision matters. A minor surface flaw on a bearing race could lead to vibration and failure; a scratch on a high-end product’s outer shell could mean a return or a dissatisfied customer.
Smart Technology + Industry Know-How
What sets us apart isn’t just the tech — it’s how we apply it. With years of hands-on experience designing inspection systems for real production lines, we know how to balance precision, speed, and robustness. Our solutions aren’t off-the-shelf — they’re built for your product, your process, and your quality standards.