2016-08-242016-08-241996-05-14http://hdl.handle.net/10919/72313A velocimeter includes a light source for emitting a light beam through a flow, the flow including particles for scattering light as the light beam passes through the flow, a focussing device for focussing the scattered light into a particle image, a detecting device for detecting the particle image, and a device for timing passage of the particles through a predetermined section of the light beam. The detecting device includes at least one array of photodiodes for receiving light scattered by the particles. The array has a predetermined shape and is positioned so as to control a measurement volume geometry from which light scattered by the particles is received by the photodiodes.application/pdfen-USPatenthttp://pimg-fpiw.uspto.gov/fdd/98/172/055/0.pdf8070115356/28G01P5/205517298