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Proceedings Paper

Numerical analysis on imaging character of a single microsphere
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Paper Abstract

The imaging character of microsphere is determined by its refractive index and size. In this paper, it is demonstrated that the spherical aberration(S) and numerical aperture (NA) of the microsphere are different with different refractive index or different radius. The relationship between the focal length and refractive index is obtained by numerical simulation. It is shown that the focal length decreases with the increase of the refractive index. The focal length and diameter possesses a linear relation,which is matched with the theoretical result. It is also found that the photonic nano-jet may appear when the refraction index and size of the microsphere are chosen properly. The microsphere has great potential in the laser processing of surfaces materials and super-resolution detection of nano structure etc. So the study on the microsphere imaging has great significance.

Paper Details

Date Published: 21 November 2014
PDF: 8 pages
Proc. SPIE 9296, International Symposium on Optoelectronic Technology and Application 2014: Advanced Display Technology; Nonimaging Optics: Efficient Design for Illumination and Solar Concentration, 92960L (21 November 2014); doi: 10.1117/12.2073411
Show Author Affiliations
Sha Guo, Beijing Univ. of Technology (China)
Beijing Engineering Research Ctr. of Precision Measurement & Control Technology and Instruments (China)
Yunxin Wang, Beijing Univ. of Technology (China)
Beijing Engineering Research Ctr. of Precision Measurement & Control Technology and Instruments (China)
Dayong Wang, Beijing Univ. of Technology (China)
Beijing Engineering Research Ctr. of Precision Measurement & Control Technology and Instruments (China)
Qiaowen Lin, Beijing Univ. of Technology (China)
Beijing Engineering Research Ctr. of Precision Measurement & Control Technology and Instruments (China)
Lu Rong, Beijing Univ. of Technology (China)
Beijing Engineering Research Ctr. of Precision Measurement & Control Technology and Instruments (China)


Published in SPIE Proceedings Vol. 9296:
International Symposium on Optoelectronic Technology and Application 2014: Advanced Display Technology; Nonimaging Optics: Efficient Design for Illumination and Solar Concentration
Byoungho Lee; Ting-Chung Poon; Yongtian Wang; Yong Bi; Roland Winston; Yi Luo, Editor(s)

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