Circularly symmetric phase filters for control of primary third-order aberrations: coma and astigmatism.
A quartic phase retardation function is described that reduces the variation of the intensity of the focal point of incoherent imaging systems suffering from primary third-order aberrations limited to coma and astigmatism. Corresponding modulation transfer functions are shown to remain practically invariant for moderate amounts of coma and astigmatism.
Mezouari
Samir
S
Displays and Optical Technology Group, Visteon Customer and Technology Centre, Basildon, Essex, UK.
Muyo
Gonzalo
G
Harvey
Andrew R
AR