Importance

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Abstract

Provided is an imaging lens including a fixed first lens group having a positive refractive power and including a plurality of lenses, a second lens group serving as a focus group and including a negative lens, and a third lens group having a positive refractive power that are arranged sequentially from an object side to an image side. A stop is disposed between predetermined lenses of the first lens group, and, on an assumption that a lens group located closer to the object side than the stop of the first lens group is a 1a^th lens group and a lens group located closer to the image side than the stop is a 1b^th lens group, Condition Equation (1) below is satisfied:

description='In-line Formulae' end='lead'0.7<f/f1b<2.0,  (1)description='In-line Formulae' end='tail'

where f is a focal distance of an entire system and f1b is a focal distance of the 1b^th lens group.

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First Claim