Illumination par laser
Use intense, precisely controlled laser light to freeze extreme motion, isolate specific wavelengths, illuminate thin flow planes, and improve image quality in demanding high-speed imaging applications.
Light Designed for Extreme Speed
High-speed imaging requires substantial illumination because exposure times become shorter as frame rate and subject speed increase. Laser sources provide narrow spectral output, high intensity, precise focusing, and very short pulse durations.
When matched correctly to the camera, a laser can reduce motion blur, overpower unwanted emitted light, define a thin measurement plane, and deliver enough illumination without continuously heating the test subject.
Laser Illumination Applications
Laser lighting is particularly useful when motion is extremely fast, the subject emits intense light, or a precisely defined optical plane is required.
Extreme Motion
Freeze projectiles, fragments, impacts, rotating components, and highly magnified movement that would otherwise blur during a conventional exposure.
Bright Self-Luminous Events
Use wavelength filtering and short pulses to image welding, combustion, explosions, fireworks, and other events that can saturate a camera.
Flow & Spray Planes
Create a thin laser sheet to illuminate particles, droplets, or seeded flow within a precise cross section for visualization and measurement.
Balistique
Capture projectiles and fragments traveling at hundreds of meters per second with nanosecond-scale effective exposures.
High-Magnification Imaging
Reduce apparent motion blur when small movements become amplified by microscopy, macro lenses, or close-up optical systems.
Sprays & Droplets
Illuminate small droplets and spray structures with strong contrast for atomization, nozzle, and fluid-dynamics studies.
Essais des matériaux
Reduce unwanted heating when testing fibers, plastics, biological samples, or temperature-sensitive materials.
Combustion Imaging
Combine laser illumination with narrow-band filters to suppress broadband flame light and reveal the test subject.
Particle Tracking
Illuminate seeded particles for qualitative flow visualization, quantitative tracking, and particle image velocimetry.
Key Illumination Techniques
Successful laser-assisted imaging depends on pulse timing, wavelength selection, camera exposure, and optical geometry.
Pulsed Illumination
Short laser pulses act as the effective shutter, reducing motion blur even when the camera's electronic exposure is longer than the pulse.
Review timing considerations →Spectral Filtering
Use a narrow bandpass filter centered on the laser wavelength to block much of the broadband light generated by flames, welding, or explosions.
Explore combustion imaging →Temporal Filtering
Shorten camera exposure to reduce unwanted ambient or emitted light while allowing the synchronized laser pulse to remain dominant.
Discuss your optical setup →Laser Light Sheets
Shape the beam into a thin plane to illuminate a defined cross section of a flow, spray, or particle field over a useful distance.
Explore fluid dynamics →Velocimétrie par image de particules
Measure full-field velocity by calculating seeded-particle displacement between calibrated, precisely timed image pairs.
Explore PIV →Pulsed LED Alternatives
For smaller areas and less demanding pulse durations, pulsed LED systems may provide a lower-cost and easier-to-manage alternative.
Ask Photron about lighting →Laser Safety and Test Planning
Laser systems require appropriate engineering controls, trained operators, wavelength-specific eye protection, beam containment, and compliance with applicable facility and regulatory requirements.
- Identify the laser class and operating wavelength
- Use proper eye and skin protection
- Control direct and reflected beam paths
- Confirm filters, lenses, and windows are compatible
- Coordinate camera, laser, and trigger timing before testing
Matching the Camera and Laser
The camera and illumination system must operate as one synchronized measurement setup. Frame rate, pulse rate, pulse width, wavelength, exposure, sensitivity, and trigger timing all affect the final image.
Need help matching a laser to your high-speed camera?
Share your subject speed, frame rate, wavelength, pulse duration, field of view, and test environment with Photron.