Patent ID: 7826142

Claim:
A method for fabricating one or more portions of an optical system, the method comprising: defining a shape of one or more optical surfaces of one or more lenses in the optical system, such that each of the one or more optical surfaces is arranged to receive a wavefront; calculating one or more wavefront aberrations caused by a first optical surface among the one or more optical surfaces; calculating a change in the shape of the first optical surface required to compensate for the one or more wavefront aberrations caused by the first optical surface, wherein said calculating the change in the shape of the first optical surface comprises modifying a thickness of the first optical surface based on an optical path difference between spherical and aberrated wavefronts for an image ray emitted from the first optical surface and a refractive index of optical material between the first optical surface and a successive second optical surface; polishing, based on the calculated change in the shape, the first optical surface to compensate for the one or more wavefront aberrations.