DCM Sistemes PLC0615A Compact Linear Light Projector

Wavelength selection is the primary configuration decision at ordering time. The six standard options — 400 nm UV, 470 nm Blue, 525 nm Green, 630 nm Red, 850 nm IR, and broadband White — cover the full range of common monochrome and color camera sensitivities. UV at 400 nm fluoresces adhesives, coatings, and surface contamination that are invisible under visible light, making it valuable for pharmaceutical seal inspection and electronics flux detection. The 525 nm Green variant maximises contrast on red or orange substrates, making it well suited to cameras whose spectral sensitivity peaks in the green band. Red at 630 nm cuts through ambient factory lighting and is the workhorse choice for OCR, barcode reading, and general surface inspection on light-toned parts. IR at 850 nm penetrates thin packaging films and dark plastics, revealing contents or subsurface structure without saturating typical silicon sensors. Three further wavelengths — 455 nm, 730 nm, and 940 nm — are available on request, providing near-UV and deep-NIR options for specialised spectral separation tasks.

The light supports both darkfield and direct (brightfield) illumination geometries, which determines how it is mounted relative to the camera and part. In direct configuration, the bar is placed on-axis or at a shallow angle to flood the inspection zone uniformly — the standard approach for reading codes, measuring edges, or checking fill levels on packaging lines. In darkfield configuration the bar is angled low to the part surface so that only surface relief, scratches, or raised features scatter light toward the camera while the flat background stays dark; this geometry is highly effective for detecting fine scratches on machined metal, embossed markings, or particulate contamination on flat substrates. The specified minimum working distance is 50 mm, which gives adequate clearance for most conveyor and fixture arrangements while keeping the 165 mm bar length usable across the full field without hot-spots at the extremes.