Patent ID: 8634074

Claim:
A method of in situ particle measurement, comprising: moving a measurement instrument at a first velocity relative to a reference axis that intersects a volume of interest, wherein said volume of interest includes a number of particles to be measured, and wherein said particles are moving at a second velocity relative to said reference axis; transmitting, from said measurement instrument, a light beam across said volume of interest, wherein said light beam interacts with individual ones of said particles; using a sensor array of said measurement instrument, detecting incident light reflecting patterns associated with an interaction of said light beam with said particles; and using one or more computer processors: determining, based on said second velocity, an effective pixel pitch of said sensor array along said reference axis; and integrating data collected over time using said sensor array to form one or more holograms, wherein said holograms provide cumulative information regarding said particles of said volume of interest as a function of time along said reference axis.