Journal
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
Volume 38, Issue 3, Pages 395-400Publisher
OPTICAL SOC AMER
DOI: 10.1364/JOSAA.414120
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Funding
- National Natural Science Foundation of China [42005066, 61675153]
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By utilizing interferometric particle imaging technology, a method for comparing aspect ratios of ellipsoidal particles was proposed. Experimental results confirmed the effectiveness of the method for aspect ratio comparison in ellipsoidal particles.
Based on the interferometric particle imaging (IPI) technology, we present a method for comparison of aspect ratios of ellipsoidal particles. By simulating the interference in-focus and out-of-focus images of transparent ellipsoidal particles with different aspect ratios, we find that, under the same orientation angle, the larger the particle aspect ratio is, the higher the spatial frequency of the out-of-focus image. The IPI system is established to experimentally acquire the out-of-focus images of the transparent ellipsoidal particles. Because the experimental results agree with the simulation, we propose a method to compare the aspect ratios of ellipsoidal particles using out-of-focus images. The method features potential applications in particle measurements. (c) 2021 Optical Society of America
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