We investigate the focal characteristics of several cylindrical microlenses made of anisotropically dielectric material
illuminated by different wavelengths in close boundary based on rigorous boundary element methods. Several design
schematics of the microlenses are performed and their focusing performances are analyzed. It is found that different
focal lengths ans spot sizes are formed from different design schematics, and the separation of o-ray and e-ray can be
well achieved by appropriately seleted geometrical parameters. It is believed that this analysis will provide useful
information in the applications of micro-optis.
We investigate the focusing performance of a closed-boundary axilens with long common focal depth by boundary integral euquations. The common extended focal depth of a cylindrical micro-axilens, illuminated by different incident wavelengths is numerically simulated, and the electric field intensity distribution is numerically determined by the boundary element method. The results show that the long common focal depth is changed when the preset focal depth is increased.
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