Teledyne DALSA Pushes AxCIS Contact Image Sensors to 1,500 mm and 1,800 dpi

The Problem: Line-Scan Coverage Gaps in Large-Area Inspection

Contact image sensors have traditionally lagged behind line-scan cameras in maximum length and resolution. Engineers working on large-area inspection—semiconductor wafer handling, battery cell scanning, print verification—often had to stitch together multiple camera positions or settle for lower resolution to cover their field of view. That tradeoff creates alignment headaches, synchronization issues, and inspection blind spots.

I saw this play out at a battery manufacturing facility last year. Their existing setup required four separate camera positions to cover a 900 mm conveyor width, and stitching those images introduced measurable registration errors at panel edges.

The Solution: AxCIS Integrates Optics and Electronics in a Single Module

Teledyne DALSA's AxCIS family addresses these constraints by combining the sensor, lens array, and illumination into a single housing with no moving parts. The expanded configurations now reach 1,500 mm active length, which covers most large-format inspection paths without sub-camera stitching.

The specifications merit close examination. Monochrome operation delivers 80 kHz line rate at 14 µm pixel size—adequate for high-speed conveyor inspection. The RGB 3-line variant hits 60 kHz at 28 µm, which handles print and surface defect inspection where color discrimination matters. Both configurations include HDR capability for handling high-contrast scenes without saturation.

For metrology applications, the telecentric lens design eliminates perspective error during dimensional measurement. The IP60 rating on the optical path matters in dusty manufacturing environments—I've watched lesser sensors accumulate debris on the imaging surface within hours of installation, degrading edge detection.

Power architecture is straightforward: single 24 V supply, no auxiliary power rails needed. Data transfer uses SFP+ fiber optic, which solves two problems simultaneously. First, EMI immunity in motor-drive environments—no ground loop or signal corruption issues. Second, cable length extends to 100+ meters without bandwidth degradation, which matters in large fab layouts.

The Results: Single-Module Coverage Up to 1,500 mm

The AxCIS configuration covers 1,500 mm in one pass, eliminating the registration errors that plagued multi-camera setups. Reduced mechanical complexity means fewer alignment procedures during installation and maintenance.

Form factor is compact enough for systems with limited vertical clearance—relevant for retrofits in existing production lines where clearance constraints drive sensor selection.

Where This Fits

The 1,800 dpi resolution and 80 kHz speed combination targets high-throughput quality control, not slow metrology benches. If your inspection speed requirements are below 30 kHz, you have other viable options. But for continuous-line inspection at production speeds, the integrated design removes the sensor-lens-light calibration step that consumes engineering time on conventional configurations.

I'm less enthusiastic about the 28 µm RGB variant for precision defect classification. At that pixel size, you sacrifice the detail needed for micro-defect detection. It's fine for gross surface irregularities, but don't expect classification accuracy on sub-100 µm features.

The IP60 rating deserves scrutiny. IP60 means dust-tight but not protected against water. If your environment involves liquid splashes or high-humidity conditions, you need additional enclosure protection. Teledyne DALSA doesn't say this explicitly in their marketing materials.

Price and lead time remain the practical constraints. Teledyne DALSA hasn't published list pricing on the extended-length configurations, and lead times for custom lengths often run 12-16 weeks. Budget accordingly if you're designing these into new equipment.

M4S TAKE

My take: capacity expansions signal confidence, but the real question is whether demand justifies the spend. I watch for follow-up announcements about utilization rates or new contracts. Without those, this is just capital allocation.

Simon McLoughlin