Three-dimensional particle imaging by wavefront sensing |
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Authors: | Towers Catherine E Towers David P Campbell Heather I Zhang Sijiong Greenaway Alan H |
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Institution: | School of Mechanical Engineering, Leeds University, Leeds, UK. ce.towers@leeds.ac.uk |
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Abstract: | We present two methods for three-dimensional particle metrology from a single two-dimensional view. The techniques are based on wavefront sensing where the three-dimensional location of a particle is encoded into a single image plane. The first technique is based on multiplanar imaging, and the second produces three-dimensional location information via anamorphic distortion of the recorded images. Preliminary results show that an uncertainty of 8 microm in depth can be obtained for low-particle density over a thin plane, and an uncertainty of 30 microm for higher particle density over a 10 mm deep volume. |
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