Vol. 30, Issue 2-3, pp. 213-229 (2000)

Abstract

A hybrid lens is understood as a glass lens with a diffraction microstructure deposited on one of its spherical surfaces. The imaging properties of such a lens depend above all on the curvature radii of the lens surfaces, topography of diffraction microstructure and both position and size of the entrance pupil. The third order aberrations depend directly on these parameters. By choosing properly the above parameters an achromatic hybrid lens of corrected spherical aberration and selected field aberrations can be designed. The imaging quality of the designed hybrid lens has been illustrated by such characteristics as geometrical aberrations, spot-diagrams, diffraction point spread function and wave aberration.