Architectures and Techniques for Optical Aberration Correction

摘要

Aspects of the disclosure relate to correction of aberration in optical systems. In one aspect, correction of aberration can rely on a corrector lens that is movably positioned between an objective lens and an optical member, and that can introduce a perturbation to a convergent beam of light that forms an image at the substantially the focal point of the objective lens. The formed image presents aberration and such a perturbation can correct at least a portion thereof. In another aspect, the corrector lens can embody or can comprise a positive power lens, that introduces the perturbation via, at least in part, a radially symmetric wavefront correction into the convergent beam, where such a correction varies as a fourth power of a radial distance from a central axis of propagation of the convergent beam of light.

主权项

1. An optical assembly, comprising:
an objective lens that produces a convergent beam of light; an optical member having a predetermined thickness, the optical member positioned at a predetermined distance from the objective lens and that propagates at least a portion of the convergent beam of light, whereby propagation of at least the portion of the convergent beam of light yields aberration of an image formed from at least the propagated portion of the convergent beam of light; and a corrector lens movably positioned between the objective lens and the optical member based at least in part on the predetermined thickness of the optical member, the corrector lens introducing a radially symmetric wavefront correction which varies as a fourth power of a radial distance from a central axis of propagation of the convergent beam of light, whereby the corrector lens corrects at least part of the aberration.