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Solution

Structured Light 3D and Curved Surface Inspection

Structured lighting research aimed at parts where a flat two dimensional image cannot separate a real defect from a shadow.

Overview

What This Covers

As a technical company SBS Vision does not only supply products, it also invests in innovation and creativity so the product lines keep pace with customer demand. A significant part of that effort has gone into structured lights for 3D inspection and curved surface inspection.

Curved and specular parts are the classic case where a flat two dimensional image cannot tell a real defect from a shadow. Structuring the illumination, rather than simply adding more of it, is what makes the geometry readable.

Process

From Requirement To Delivery

Identify The Geometry Problem

Establish whether the feature is a height, a slope or a surface mark. Each one needs a different illumination structure.

Select Or Design The Structured Light

Dome, flat dome, square dome and collimated coaxial geometries all shape the light differently across a curved surface.

Match The Optics

Depth of field, working distance and magnification are set so the whole curved feature stays within tolerance across the field.

Prove The Contrast

The measure of success is contrast between good and bad on the real part, not brightness in a datasheet.

Transfer To Production

The proven geometry becomes a repeatable part number for the line.

FAQ

Structured Light 3D and Curved Surface Inspection FAQ

What research has SBS Vision done in 3D inspection
The company states that it has done a lot of research in structured lights for 3D inspection and curved surface inspection.
Which lights suit curved and shiny parts
Dome lights, flat dome lights and square dome lights give diffuse illumination across curvature. Collimated coaxial lights suit flat specular surfaces. The individual product pages list the published applications for each geometry.
Can the geometry be customised for my part
Yes. Customised lighting design is a standard service, with samples normally provided within 10 working days.
Do you supply the 3D software as well
SBS Vision supplies the imaging components and the lighting design behind them. The inspection algorithm sits with the machine builder or integrator.

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