Laser Sheet Imaging

The Laser Sheet Imaging (LSI) system, manufactured by LaVision, Goettingen, Germany, provides a non-intrusive method for measuring two-dimensional spray plume concentration distribution. The LSI technique measures scattered light intensity as droplets pass through a nominally two-dimensional laser sheet. This light intensity is proportional to either the droplet surface area (Mie light scattering) or drop volume (Laser Induced Fluorescence – LIF). After acquiring many instantaneous images an average spray distribution may be determined.

LSI provides a two dimensional distribution.  The integrated Programmable Timing Unit (PTU) may be set to acquire at regular intervals or phased locked to an external trigger signal and syncs the firing of the laser and CCD camera during image acquisition.

The Laser Sheet Imaging system is best suited for low flow, small droplet shaped (round or hollow) sprays. It provides data and images of the spray concentration distribution.