What inspection variables should be evaluated?
Separate dust, bubbles and adhesive edges before choosing single or combined illumination for display glass and bonding layers.
What lighting geometry fits this inspection task?
Diffuse lighting spreads illumination over a broad area to reduce concentrated reflections. It is useful to evaluate curved parts, glossy packaging and uneven textures. Dome, flat and square diffuse lights have different openings and working distances.
Check background brightness at the centre and edges and look for reflections of the camera opening. Diffusion may also reduce fine-scratch contrast; a separate directional exposure can help. Evaluate colour, markings and defects on real samples instead of selecting a light only for a visually pleasing image.
Related product family?
LXV-DM
Bar, ring and dome configurations provide directional zones for photometric stereo. Combine lighting, camera and reconstruction software to evaluate surface relief, embossed characters and local defects. Select dimensions for the sample.
Directional lighting zones: 4
Before choosing a configuration?
For selection, specify the field of view, smallest target feature, height variation, cycle time and installation space. Use the specific product page and drawing to verify electrical ratings, dimensions and compatibility.
Inspecting adhesive and glass separately?
A glass surface, an adhesive outline and an LED structure may require different backgrounds. Begin with diffuse light for broad reflective areas, then evaluate directional or transmitted light for edges and local defects.
Compare intact adhesive, excess material, gaps and bubbles using representative samples. Check the entire field and expected height range. Avoid treating an attractive overall image as proof that the smallest required adhesive defect is visible.
What do the optical setup and sample images show?
