Equilateral hyperbolic moiré zone plates with variable focus obtained by rotations.

  title={Equilateral hyperbolic moir{\'e} zone plates with variable focus obtained by rotations.},
  author={Zbigniew Jaroszewicz and Andrzej Kołodziejczyk and Alejandro Mira and Rodrigo Henao and Salvador Bar{\'a}},
  journal={Optics express},
  volume={13 3},
We present equilateral hyperbolic zone plates with variable focal length, which are formed as moiré patterns by a mutual rotation of two identical basic grids. Among others, all principal zone plates, except of the spherical one, can be used as these basic transmittances. Three most important advantages of the proposed moiré zone plates are: a constant aperture of the created element during the mutual movement of basic grids, lack of aberrations due to their undesired mutual lateral… CONTINUE READING