Patent ID: 8830476
Filing Date: 2014-09-09
Classification: G01N

Abstract:
1. An apparatus for holographic imaging of an aerosol particle comprising: a delivery device configured to generate a flow of air to deliver the particle to and from a region; a particle trap configured to trap and hold the particle in said flow of air substantially motionless in the region, and to later release the particle from said particle trap into said flow of air; a light source for outputting a first beam of light and a second beam of light, wherein the first beam travels into the region producing a first light wave which is un-scattered by the trapped particle and a second light wave that is scattered by the trapped particle, and the second beam does not travel into the region; a beam splitter for combining the second beam with the scattered light of the first beam into combined interference light; an image sensor for sensing an interference pattern created by the combined interference light; and an image processor configured to generate an image of the aerosol particle based on the sensed interference pattern.