Imaging lens and imaging apparatus

1. An imaging lens comprising, in order from an object side:

a first lens group having a negative refractive power;

a second lens group having a positive refractive power; and

a third lens group having a negative refractive power,

wherein during focusing, the first lens group and the third lens group remain stationary with respect to an image plane, and the second lens group moves in a direction of an optical axis, and

the first lens group includes a first-a negative lens and a first-b negative lens successively in order from a position closest to the object side.

2. The imaging lens according to claim 1 ,

wherein a surface of the second lens group closest to the object side has a shape convex toward the object side.

3. The imaging lens according to claim 1 ,

wherein in a case where an Abbe number of the first-b negative lens in a d line is set to νd1b, and an Abbe number of the first-a negative lens in the d line is set to νd1a, the following Conditional Expression (1) is satisfied.

20<ν d 1 b−νd 1 a< 56  (1)

4. The imaging lens according to claim 1 ,

wherein the first lens group includes a positive lens at a position closest to an image side.

5. The imaging lens according to claim 4 ,

wherein in a case where an Abbe number of the first-b negative lens in a d line is set to νd1b, and an Abbe number of the positive lens of the first lens group closest to an image side in the d line is set to νd1gp, the following Conditional Expression (2) is satisfied.

20<ν d 1 b−νd 1 gp< 58  (2)

6. The imaging lens according to claim 1 ,

wherein in a case where a curvature radius of a surface of the second lens group closest to the object side is set to R2g1, and a focal length of the first lens group is set to f1, the following Conditional Expression (3) is satisfied.

−1.2< R 2 g 1/ f 1<−0.1  (3)

7. The imaging lens according to claim 1 ,

wherein the second lens group includes a positive lens at a position closest to the object side.

8. The imaging lens according to claim 1 ,

wherein the second lens group includes a positive lens, a positive lens, and a negative lens successively in order from a position closest to the object side.

9. The imaging lens according to claim 1 ,

wherein in a case where a focal length of the first-a negative lens is set to f1a, and a focal length of the first lens group is set to f1, the following Conditional Expression (5) is satisfied.

0.3< f 1 a/f 1<1.1  (5)

10. The imaging lens according to claim 1 ,

wherein in a case where a focal length of the first-b negative lens is set to f1b, and a focal length of the first lens group is set to f1, the following Conditional Expression (6) is satisfied.

0.6< f 1 b/f 1<2.2  (6)

11. The imaging lens according to claim 1 ,

wherein the third lens group consists of a positive lens and a negative lens in order from the object side.

12. The imaging lens according to claim 3 ,

wherein the following Conditional Expression (1-1) is satisfied.

24<ν d 1 b−νd 1 a< 53  (1-1)

13. The imaging lens according to claim 5 ,

wherein the following Conditional Expression (2-1) is satisfied.

24<ν d 1 b−νd 1 gp< 55  (2-1)

14. The imaging lens according to claim 6 ,

wherein the following Conditional Expression (3-1) is satisfied.

−0.9 <R 2 g 1 /f 1<−0.2  (3-1)

15. The imaging lens according to claim 9 ,

wherein the following Conditional Expression (5-1) is satisfied.

0.4< f 1 a/f 1<0.9  (5-1)

16. The imaging lens according to claim 10 ,

wherein the following Conditional Expression (6-1) is satisfied.

0.9< f 1 b/f 1<1.9  (6-1)

17. An imaging apparatus comprising the imaging lens according to claim 1 .