Analytical and exact method for design diffractive lenses free of spherical aberration

Diffractive null lens for parabolic mirrors

“…al. [11] method which calculates the phase coefficients by solve an equations system of the first degree.…”

Singlet lenses free of all orders of spherical aberration

“…Also, many specialized optical systems have been developed to greatly reduce the spherical aberration, but none has eliminated it completely. Designs with single or multiple lenses were developed [12][13][14][15][16][17][18][19][20][21][22][23].…”