Super wide-angle lens and photographing apparatus having the same

摘要

In order to provide a large relative-aperture super wide-angle lens having the inclusive angle of 2 &ohgr;=115° or more with the conventional projection method (y=f·tan &thgr;) having the relative-aperture of about F 2.8, having compactness and high optical performance, and having small variation of aberration in relatively close object distance, the lens includes, in order from the object, a divergent lens group Gn having negative refractive power and a convergent lens group Gp having positive refractive power, and the divergent lens group Gn includes at least one aspherical negative lens, and the aspherical lens satisfies predetermined conditional expressions.