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Aberration-free negative-refractive-index lens
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View: Figures


Image of FIG. 1.
FIG. 1.

Basic configuration for spherical aberration calculation. As the diameter of the spherical surface approaches infinity, and , a “perfect lens” is constructed.

Image of FIG. 2.
FIG. 2.

The spherical aberration as a function of refractive index . The object distance is assumed to be 1 and the maximum distance above the axis, , is 0.8.

Image of FIG. 3.
FIG. 3.

Configuration for the five Seidel aberrations calculation. (a) Light trace diagram. (b) End-on view of the imaging situation along the axis. and are the object and image position, respectively. is the aperture stop coordinate vector and is the image plane coordinate vector.

Image of FIG. 4.
FIG. 4.

(Color) Numerical calculated coefficients of the spherical aberration (a), coma (b), curvature (c), and the sum of the three aberrations (d) as a function of the shape factor and refractive index . The values of the color bars for the spherical aberration, coma, and field curvature range from 0 (navy blue) to 1 (garnet), and the value for the sum spans from 0 to 3.

Image of FIG. 5.
FIG. 5.

(Color) Detailed contour map of the area with small values of the sum of the three aberrations . There are two minimums near the small refractive index area : for and ; for and . In order to give the details, the range of the color bar is shrunk to the values from 0.2 to 0.6.


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Scitation: Aberration-free negative-refractive-index lens