Field flattener lens
= Field flattener lens
{wiki=Field_flattener_lens}
A field flattener lens is an optical component designed to correct for field curvature, a common aberration in optical systems such as telescopes, cameras, and microscopes. Field curvature occurs when the optical system focuses light onto a curved surface instead of a flat plane, leading to areas of sharp focus at the center and progressively increased blur towards the edges of the field of view.