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Lighting Control

Machine Vision Light Controllers

A machine vision light controller sets trigger, pulse width, current, and multi-channel timing for the inspection. Open the controller model and read the pulse and current rows before you lock the camera exposure.

View Controller Products Contact LuxMV

Selection considerations

Open the matching series, then send the part or the images.

What does a machine vision light controller do and when do you need one?

The controller drives the light with the camera. Current, pulse width, and channel timing come from the model you select.

Control ModeWhat it doesNext step
ContinuousHolds current for line scan and slow area scanOpen the controller model
Trigger / StrobeFires the light with the camera exposureSend line speed and exposure
OverdriveRaises current for the short pulse listed on that modelSend the duty cycle
Technical considerations
  • Analog or digital dimming holds the current after setup
  • Strobe and overdrive follow the exposure and duty cycle on that model
  • Multi-channel models balance timing across lights
  • Constant-current mode holds continuous illumination

What are the key engineering specifications for light controllers?

Current capacity, trigger speed, and duty cycle are the critical selection parameters. Voltage drop across cables and thermal limits dictate operation modes.

ParameterWhere it is listedSelection impact
Output channelsController model rowHow many lights share one trigger
Peak currentController model rowWhich strobe the light can take
Trigger timingController model rowHow the pulse meets the exposure
Technical considerations
  • Light voltage and current requirements
  • Number of channels and control mode
  • Trigger source and camera timing
  • Continuous vs strobe operation
  • Heat, duty cycle, and installation constraints

Why do light controllers fail during production deployment?

Using bench-test timing for production speeds causes missing pulses and underexposed images. Strobe overdrive must strictly match camera exposure.

Technical considerations
  • Using a controller that cannot supply peak strobe current
  • Ignoring cable voltage drop
  • Changing brightness without locking exposure
  • Testing at bench speed but deploying at production speed

Questions for the engineering discussion.

When does a machine vision system need a dedicated light controller?

Use a controller when the inspection needs locked current, camera trigger timing, strobe pulse width, or multi-channel balance. Read those rows on the controller model page.

What inputs are needed to select a machine vision light controller?

Confirm the light voltage and current limits, required number of channels, and continuous versus strobe mode. Additionally, verify trigger source, exposure time, duty cycle, cable length, heat limits, and control interface.

Why can a controller work on the bench but fail in production?

Bench tests often miss production line speed, pulse timing limits, cable voltage drop, and high-frequency duty cycles. Reliable production checks require the actual controller, final camera timing, and peak line speed to uncover thermal bottlenecks.

How does overdrive mode work in light controllers?

Overdrive safely pulses LEDs with current significantly higher than continuous ratings for extremely short durations. This delivers intense bursts of light, freezing fast motion without motion blur or thermal damage.