DCM Sistemes PLD2602A-850C Linear Projector (IR 850 nm)

The choice of 850 nm infrared is the defining optical property of this model and it changes how you build the rest of the station. Infrared light is invisible to operators, so it does not create a distracting glare on the line, and at 850 nm it tends to suppress the influence of printed colour and many surface dyes, flattening colour contrast so that the camera sees structure and material rather than ink. To capture it you must pair the projector with a camera whose sensor remains sensitive in the near-infrared (most monochrome industrial sensors are) and, for best contrast, fit an 850 nm band-pass filter on the lens so ambient room and daylight are rejected and only the projector's own light reaches the sensor. This is what lets the station hold a stable exposure regardless of changing factory lighting.

Electrically the projector is simple to integrate: it runs directly from a 24 VDC supply held to within 3 percent, connects through two 2-pin aerial chassis connectors, and requires no external lighting controller in its default continuous mode. That keeps the bill of materials and wiring short for a steady-state, always-on inspection. For applications that need brighter pulses or want to limit heating, it also supports a powered duty-cycle mode (1/2 duty, 60 seconds maximum on-time) rather than a free-running, freely strobing overdrive; because there is no separate controller in the default configuration, any pulsing or camera synchronisation would be handled by externally switching the 24 V feed. The housing is black anodised aluminium, weighs only 205 g, and the recommended working distance is greater than 50 mm, so it can sit close to the part. Its IP40 rating and 0 to 40 C operating range mean it is suited to clean, dry, enclosed inspection cells rather than washdown or wet, dusty environments.