Emerging Machine Vision Technologies
We combine custom-engineered lighting modules with deterministic controllers to deliver flawless, high-speed camera synchronization for machine vision.
This series provides high-power, deterministic illumination control for vision applications requiring precise and stable analog brightness adjustment.
This series offers highly adaptable PWM-based voltage modulation to ensure rapid, synchronized lighting for high-speed image capture.
Select the perfect light source and color temperature to create the ideal setting for operation.
Customer Testimonials Application Note
Our Industrial I/O portfolio offers robust, high-speed data acquisition and high-isolation protection for any architecture or topology.
Our DSP-based motion ecosystem delivers high-speed responsiveness and anti-resonance tuning for uncompromising multi-axis accuracy.
VisionXpert provides an integrated platform for rapid deployment and high-speed image analysis to ensure peak inspection performance.
Industrial machine vision inspection lines handle an immense variety of target materials moving at rapid speeds; some require steady, uniform light for static scanning, while others need high-intensity strobe bursts to freeze fast-moving parts. Deploying a rigid lighting controller that cannot adapt its output drive architecture causes severe compromises. Forcing high-power LEDs to stay on continuously at peak levels leads to extreme thermal wear, colour shifting, and premature fading. Conversely, failing to dynamically synchronise flashing profiles across multi-stage cameras results in blurred exposures and missed microscopic surface defects.
Achieving flawless image contrast while safeguarding LED lifespan requires hardware-level flexibility across three primary modes: Continuous Mode supplies steady illumination for static or slower lines; Pulse/Pulse Width Mode delivers high-intensity strobe bursts perfectly synchronised with the camera's shutter speed to maximise brightness while allowing the LEDs to cool down between cycles; and Sequence Mode cycles through distinct lighting states across successive frames, enabling a single camera station to capture multiple visual profiles (such as brightfield, darkfield, or multi-spectrum angles) sequentially. To deliver these modes effectively, the controller topology must handle either voltage-driven dimming for rapid, voltage-modulated lighting, or current-driven dimming to precisely regulate current and prevent thermal runaway in high-power LED arrays.
The ViTrox illumination ecosystem supports complete multi-mode flexibility through its dual-topology controller families. For voltage-driven control, the ViLIGHT Digital Dimming Series (iL2402-U5 2-ch, iL2405-U5 5-ch, and iL2407-U5 7-ch) executes Continuous, Pulse, and Sequence modes natively on an 18 VDC to 30 VDC input range, achieving digital output response times as fast as 90 ns. For precision high-power current control, the ViLIGHT Analog Dimming Series utilises the iL3K28-U3 8-channel controller, supporting an output range from 0A to 2A per channel at nominal voltages of 24V to 48V. The iL3K28-U3 features Intelligent Channel Grouping to bind multiple light sources to a single trigger signal, and both series integrate with custom vision software via the VTLightDLL library.
Industrial machine vision lights pack dense arrays of high-power LEDs into compact enclosures to achieve maximum brightness. If an automated hardware trigger signal fails, glitches, or gets stuck in a permanent "ON" state due to a control system error, the lighting controller will continuously pump maximum electrical current into the light module. This rapid, uncontrolled energy dump generates extreme heat within seconds. Without an automatic hardware-level shutdown, this thermal surge triggers thermal runaway, permanently degrading the LEDs' luminous intensity or vapourising the circuitry entirely.
Thermal runaway occurs because an LED's internal forward voltage decreases as its temperature rises. In a constant-voltage system or an unmonitored circuit, this dropping voltage causes the semiconductor to draw progressively more current, generating even more heat in a destructive, compounding loop. To halt this cycle without relying on slow software-level thermal polling, the illumination driver must incorporate a hardware watchdog mechanism. This feature monitors the physical duration of each output strobe pulse and forcefully breaks the circuit if the pulse width exceeds a safe, hard-coded millisecond threshold.
The ViLIGHT Analog Dimming Series (iL3K28-U3) eliminates the risk of thermal failure by embedding a highly configurable, hardware-level Output Pulse Width Limit overheating safeguard. Designed to drive demanding lighting topologies across 8 current-controlled channels from 0A to 2A per channel (24V to 48V nominal), the controller automatically cuts off the analog output power if a hardware signal failure forces the channel to remain ON past the programmed limit. This integrated safeguard actively protects both the controller and attached ViTrox Machine Vision Lights, which are engineered with rugged housings and advanced thermal dissipation paths to handle high-throughput manufacturing environments.
Industrial automated factory floors are saturated with intense electromagnetic interference (EMI) radiating from high-voltage motor starters, robotic articulation lines, and neighbouring variable frequency drives (VFDs). When lighting trigger signal lines run long distances through cable trays alongside these high-power conduits, inductive noise can easily couple onto the low-voltage lines, introducing transient voltage spikes. A standard light controller misinterprets these microsecond glitches as legitimate trigger pulses, causing the LEDs to flash erratically out of sync with the camera, resulting in corrupted, black, or completely over-exposed inspection frames.
To eliminate false strobing without introducing sluggish analog RC filtering circuits that degrade input response times, lighting controllers must apply high-speed digital filtering directly at the input optocoupler stage. A programmable digital pulse-width filter samples the incoming edge and enforces a strict duration check: the signal voltage must remain stable and held high for a user-configured time window before it is passed to the output circuitry. If an electrical noise spike drops or spikes faster than the designated threshold, the hardware filters it out completely as a transient glitch, maintaining precise strobe determinism.
The ViLIGHT Analog Dimming Controller (iL3K28-U3) guarantees precise real-time triggering in high-noise environments by incorporating a software-configurable Minimum Trigger Pulse Width filter, adjustable from 1µs to 0.1s. This digital filter actively suppresses electrical contact chatter and transient EMI spikes before they can trigger the light source. To provide an absolute secondary barrier against catastrophic factory noise, the module is equipped with bidirectional isolated digital inputs featuring a massive 3750 Vrms isolation voltage, completely blocking ground-loops and protecting the internal controller logic from high-voltage spikes.
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