Profile: LaVision UK Ltd offers laser imaging systems, cameras (CCDs and intensified CCDs) and smart optical sensor systems. Our FlowMaster PIV/ PTV camera systems can record two successive images within min. time <100 ns for ultrafast cross-correlation and speeds up to Mach 4. The PIV camera offers sensitivity and allow the use of very small particles (or droplets). An image field of up to 11 million pixels combined with up to 14 bit dynamic range gives an unsurpassed spatial resolution. Programmable precise timing sequences in combination with flexible and speedy software evaluation completes the package. It is used for liquid and gas flow investigations in wind tunels, water channels, in-cylinder engines industrial flow systems, compressors, turbines, fans, pumps and micro electro mechanical systems (MEMS). We offer optical sensor systems for crank angle resolved fuel (lambda-values) and exhaust gas concentration measurements at the spark plug location in internal combustion engines.