Imaging lens, optical apparatus equipped therewith and method for manufacturing imaging lens

摘要

An imaging lens SL installed in a single-lens reflex digital camera includes, in order from an object side, a first lens group G1, and a second lens group G2 having positive refractive power. The first lens group G1 includes, in order from the object side, a first lens component L11 having a negative meniscus shape with a convex surface facing the object side, a second lens component L12 having a negative meniscus shape with a convex surface facing the object side, and a third lens component L13. The third lens component L13 includes a double concave lens to the most object side. The imaging lens SL includes at least six lens components or more, thereby providing a sufficiently fast imaging lens having excellent optical performance, which is a large aperture, single-focal-length, wide-angle lens having an aspherical surface.

主权项

1. An imaging lens comprising, in order from an object side:
a first lens group; and a second lens group having positive refractive power, the first lens group including, in order from the object side, a first lens component having a negative meniscus shape with a convex surface facing the object side, a second lens component having a negative meniscus shape with a convex surface facing the object side, and a third lens component, at least one of the first lens component and the second lens component including an aspherical surface on an image plane side lens surface, the third lens component including a double concave lens to the most object side, the imaging lens including at least six lens components, and the following conditional expression being satisfied:
0.65