Correcting aberration in aspheric surfaces

New technique eases aspheric lens fabrication and overcome traditional limitation. An aspheric lens has been designed by using optical designing software to replace the achromat (Doublet) lens of eyepiece assembly of telescope. The devised physical parameters of aspheric lens have been incorporated into the CNC Aspheric machine to fabricate the lens. The antireflection coating for visible region has been carried out on lens by employing PVD technique. In this report diminished aberration effects due to non-spherical surface profile and comparison of optical parameters of achromat (doublet) and aspheric lens is presented