DCM Sistemes BKL1818A Area Backlight

Wavelength choice is the main lever on this fixture. It ships as white (W00) by default but is also offered in 470 nm blue, 525 nm green, 630 nm red, 850 nm IR and RGB. For silhouette and dimensional work, a shorter, narrowband wavelength such as 470 nm blue typically sharpens the edge transition that a measurement algorithm keys on, while 850 nm IR can punch through certain translucent or tinted materials that would otherwise wash out a backlit edge; the trade is power, since the 850 nm IR option draws up to 27 W versus roughly 16 W typical continuous (Type C) for white. Pairing matters too: with any backlight the camera should be exposed for the bright field so the silhouette goes solidly dark, and a monochrome sensor matched to a narrowband color generally yields the cleanest binary edge.

Electrically and mechanically this is a straightforward design-in. The standard unit runs directly on 24 VDC (PIN1 +24V +/-3%, PIN2 0V) through a 2-pin male chassis connector and needs no external controller, which keeps wiring to a single supply line. It supports continuous (Type C), strobe (Type S) and powered operating modes, and an intelligent iBlueDrive variant (Type i) swaps in a 3-pin aerial male inline connector with integrated control. The housing is anodized aluminium, 194x184x22 mm and 770 g, so it is thin enough to mount close behind a part yet rigid. Standard sealing is IP40 with IP65/IP67 available as modifiers, and the window is 0 to 40 C operating (0 to 60 C storage), which sets the limits for enclosed or warmer line environments.