LES80 Coaxial Light

Introduction

Illumination on the camera's own axis, through a 45° beam splitter, over an 80 × 80 mm field.

The size where a coaxial light stops being a component and starts being the reason the cell is laid out the way it is: 1.35 kg and 174 × 91 × 94 mm of anodised aluminium, with up to 64 High Power LEDs behind the glass.

What it puts on the part

The strobe column is the one that changes what is possible. At 100 mm it is forty-five times the continuous figure, so a line moving fast enough to need a 50 µs exposure still gets a fully exposed frame.

Electrically: 7 to 10 W continuous at the light field, against 451 to 828 W in a flash.

Timing

100 % brightness within 5 µs in strobe, 180 µs in switching mode. Flash duration is 10–100 µs, 20–220 µs or 50–750 µs by part number, at 10, 35 or 100 Hz.

Triggering takes TTL at 3 to 30 V DC or PLC at 15 to 30 V DC, on the rising edge. Peak pulse current is 2.8 A, held between 1.2 and 6.5 ms depending on the build.

The controller is inside

Brightness is set on the light — a potentiometer from 0 % at the left stop to 100 % at the right — or from the machine over the analogue VC input, 2 to 10 V DC. No external controller, no second cable run, nothing extra to find room for above the conveyor.

Applications

PCB and electronics. Glass, display and wafer. Polished, coated and laminated metal. Print, label and code reading. The 850 nm build for subsurface and through-coating views.

Where it fits

Between LES60 at 60 × 60 mm and LES100 at 100 × 100 mm. Take the next size up when the part is wider than the field; a coaxial light cannot be tilted to cover more.