DCM Sistemes ALB1716A Direct Ringlight (Blue 470nm, Continuous, Wide angle)

This unit is the 470 nm blue, continuous version. Blue is a short wavelength that scatters more on fine surface structure and pairs well with monochrome sensors, which are most responsive to shorter wavelengths, so it is a common choice for resolving fine surface detail and small features and for working against red or warm-coloured backgrounds where a blue source plus a matching blue bandpass filter on the lens suppresses ambient light. Being the continuous (C) drive variant, it is simply held on: it is powered at 24 VDC and switched through a 3-pin control input, so no external strobe controller is required and integration is reduced to a power feed and a switching line. DCM also offers the same body in an iBlueDrive 'i' variant for strobe and overdrive operation when you need to freeze fast motion or push extra brightness in short bursts, but that capability is not present in this continuous part; here you trade peak strobe punch for the simplicity of a continuously lit, always-ready source.

Electrically and environmentally the light is built for the line. It runs on 24 VDC with a +/-8% tolerance through a 3-pole aerial connector on a 150 mm flying lead, and in the 470 nm continuous configuration it draws up to about 4020 mA instantaneously, on the order of 20-22 W, so the 24 V supply and any switching device must be sized for that load. The housing is anodized aluminium, giving mechanical robustness in an industrial setting, and it weighs 940 g, so the mounting bracket must carry real weight and hold the ring rigidly in front of the lens. Nine M4 holes provide fixing points for that bracket. It is rated IP65 against dust and washdown, with an IP67 option via the /67 modifier for harsher wet environments, and the operating range is 0 to 40 degC. To deploy it, pair it with an area-scan camera and lens whose field of view fits through or just below the 76 mm aperture, set the working distance above 50 mm, and add a blue bandpass filter on the lens if you need to lock out ambient or coloured stray light.