Automotive Exterior Lighting

Exterior lighting covers every LED on the outside of the vehicle — headlamps, tail and brake lights, turn indicators, daytime running lights, and illuminated trim or badging. Each of these is built from one or more LEDs whose colour, intensity and uniformity have to match a defined specification before the lamp assembly leaves the line.

Feasa systems are used at the point of assembly, where the lamp's PCB or finished housing is powered up and measured directly — either on a fixed test fixture, inline on the conveyor, or on a robot end-of-arm tool. Optical heads sit over each LED and capture a full reading in under a second, so testing happens as part of the normal build sequence rather than as a separate offline step.

This matters because exterior lighting is one of the most visible parts of a vehicle and one of the most heavily regulated. A mismatched headlamp cluster or an out-of-tolerance indicator is obvious to a driver, and can also fall outside regional type-approval limits. Testing every unit as it's built, rather than sampling a percentage, is what lets manufacturers catch and trace an issue back to its source before it reaches the customer.

Where it's used varies by product: high-intensity beam and reflector LEDs are typically tested with the High Brightness LED Analyser, red and amber signal lighting with the RGB LED Analyser, and low-output trim or light-guide LEDs with the Low Light LED Analyser — often on the same line, feeding results into a single traceability record.