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Home > Products > Laser Systems: Imaging

Imaging


Vector Analysis (PIV)

Vector Analysis (PIV), Image courtesy of Oxford Lasers

Vector Analysis is a very powerful technique for performing flow velocity measurements in air or water or for measuring spray droplet/particle velocity.
Technology From: Oxford Lasers

Vector Analysis (PIV)

Particle Image Velocimetry systems are used for flow velocity measurements in liquids and gases. In addition to supplying conventional 2D PIV, stereo PIV, micro PIV and High speed (Time Resolved) systems, Warsash Scientific supplies stand-alone dual pulse and high repetition rate lasers, cameras and PIV software. These systems can also be used for flow visualisation.

Vector Analysis is a very powerful technique for performing flow velocity measurements in air or water or for measuring spray droplet / particle velocity using VidPIV - PIV Software . In addition, the same hardware can be used for flow visualisation and Particle Tracking Velocimetry (PTV).

Vector Analysis Systems from Oxford Lasers offer an unparalleled choice for flow measurement/visualisation. The VisiVector range includes standard 2d/planar, stereo/3D, high speed/time resolved and micro.

Key Features
  • 2D/Planar provides velocity measurement in a single plane, normally at frame rates up to 15 image pairs/second
  • Stereo/3D systems use a pair of cameras to provide stereo/3D measurement of velocity
  • High speed/time resolved products use high speed cameras and high repetition rate, double pulse lasers to take thousands of image pairs per second to provide time resolved velocity data
  • Micro systems view via a time resolved system and provide flow measurement in microfluidic devices
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High Speed Imaging
Laser Spray Illumination
Technology From: Oxford Lasers

High Speed Imaging

Visilase systems combine high-speed cameras with pulsed lasers to offer the most powerful imaging systems in the world of R&D. The short-pulse lasers enhance camera performance by illuminating subjects with ultra-short pulses of light. Image blur is eliminated, even for subjects moving at high velocity. The laser light can also be formed into a thin sheet (known as a lightsheet) to take a 2D slice through a turbulent 3D flow, for flow visualisation.

Images courtesy of Oxford Lasers.

High Speed Imaging
Conventional Spray Illumination
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Particle Sizing

Particle Sizing, Image Courtest of Oxford Lasers

In addition to measuring the particle diameter distribution, imaging systems also provide real-time shape and velocity analysis.
Technology From: Oxford Lasers

Particle Sizing

Image based analysis for size distribution measurement is ideal for measuring the size and shape of particles, droplets or bubbles. Online droplet sizing systems capture high-speed images of a particle cloud, spray (e.g. for water droplet size measurement) or bubble stream to give the drop size. In addition to measuring the particle diameter distribution, imaging systems also provide real-time shape and velocity analysis.

Key Features
  • Measure particle or droplet size in real time
  • Measure particle or droplet velocity and direction
  • Measure individual particles
  • Capture images of the particle in flight
  • Make non-intrusive measurements
  • Make in-situ measurements
  • Report on-line, real-time results
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Spray Pattern Analysis

Spray Pattern Analysis, Image Courtesy of Oxford Lasers

Spray patternation systems capture images of the spray and calculate its pattern, cone angle/plume geometry and time evolution.
Technology From: Oxford Lasers

Spray Pattern Analysis

Spray Pattern Measurement Systems are used for characterisation of many types of spray including: nasal sprays, MDI (metered dose inhaler), DPI (dry powder inhalers), agricultural, water, paint, fuel injectors and domestic aerosols. Spray patternation systems capture images of the spray and calculate its pattern, cone angle/plume geometry and time evolution. Optional software and hardware allow droplet size measurement and velocity measurement.

Oxford Lasers has developed a number of imaging systems for aerosol characterisation that allow measurement of all these parameters using image analysis.

In addition to providing quantitative data, the Envision systems can provide images of the break-up and droplet formation process. This can provide an extremely valuable insight into the process and aid product development and troubleshooting.

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Flame and Weld Viewing
Sparkler with Visibrite
Technology From: Oxford Lasers

Flame and Weld Viewing

Flame penetration imaging can be used to take movies through flames, arcs and explosions. When an arc or laser welding process is imaged with a normal imaging system, the high brightness of the plasma saturates the camera and no detail can be seen. VisiWeld systems eliminate the glare to give a clear image of the weld process.

Images courtesy of Oxford Lasers.

Flame and Weld Viewing
Sparkler without Visibrite
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All products and information are subject to change without notice.