Patent ID: 8526128

Claim:
An image-forming lens comprising: from an object side to an image side in the following order, a first group with a positive refractive power having a total of either four or five lens elements, which includes two negative lenses and at least two positive lenses and, in which a first lens element on a most object side is a negative meniscus lens a convex surface of which faces the object side; an aperture; and a second group with a positive refractive power having a total of five lens elements or less, which includes at least one cemented lens in which two lens elements of a positive lens and a negative lens are cemented to each other; wherein each of the first group and the second group shifts independently to perform focusing to a limited object distance, an interval between the first lens element and a second lens element adjacent to a surface on the image side of the first lens element: d1 1-2 and an interval between the second lens element and a third lens element adjacent to a surface on the image side of the second lens element: d1 2-3 satisfy Conditional Expression A: 0.0<d1 2-3 /d1 1-2 <1.0, and a shape of a lens surface on the most image side of the first group and a shape of a lens surface on the most object side of the second lens group are convex shapes.