Optical imaging system with ultra wide angle, ultra wide angle - imaging lenses apparatus, and image

摘要

Optical imaging system with ultra wide angle from an object side of which has in this sequence:a first lens group (20);an aperture stop (40); anda second lens group (30),the first lens group (20) in the order of from one location on the nearest to the object side a negative meniskuslinsenelemnt (21), which is convex towards the object side, a negative lens element (22), and a negative lens element (23) comprises,the second lens group (30) has a plurality of positive lens elements,the first lens group (20) and the second lens group (30) in each case at least an anamorphic surface having a different refractive power in relation to a first section, which is disposed in a first direction on a plane perpendicular to an optical axis, and in relation to a second section extending in a second direction orthogonally with respect to the first direction, wherein the image angle along the first direction is greater than the image angle along the second direction is,..