Patent ID: 9638891
Date: 2017-05-02
CPC Classifications: G02B

Claim:
1. An imaging lens consisting of, in order from the object side, a front group, a stop, a rear group, wherein the front group includes, in order from the most-object side, a first lens having a positive refractive power, a second lens having a negative refractive power, and a third lens having a negative refractive power, and a final lens of the front group adjacent to the stop, with the surface toward the stop (St) being convex toward the image side, which are adjacently disposed, the rear group includes, in order from the most-image side, two sets of cemented lenses having positive refractive powers, which are adjacently disposed, the object-side cemented lens of the two sets of cemented lenses is formed by cementing, in order from the object side, a positive lens with a convex surface toward the image side and a negative meniscus lens together, the image-side cemented lens of the two sets of cemented lenses is formed by cementing, in order from the object side, a negative meniscus lens with a concave surface toward the image side and a positive lens together, and the following conditional formula (5) is satisfied: where,