Imaging lens and optical apparatus

1. An imaging lens in which a plurality of lenses are combined with each other, comprising:

at least one positive lens that satisfies the following Conditional Expressions (1) to (3) in a case where a refractive index at a d line of a positive lens included in the imaging lens is set to nP, an Abbe number at the d line of the positive lens is set to νP, and a rate of change of the refractive index at the d line of the positive lens with respect to a change in temperature at 25° C. is set to dnP/dt,

1.65< nP< 1.75  (1)

45<ν P< 55  (2)

dnP/dt< 0×10 −6 /° C.  (3)

wherein in a case where a lens that satisfies the following Conditional Expression (4) is included, the lens that satisfies the following Conditional Expression (4) satisfies the following Conditional Expression (5) in a case where an Abbe number at the d line of a lens included in the imaging lens is set to νd, and a partial dispersion ratio of the lens included in the imaging lens is set to θgF,

60<ν d   (4)

0.6<θ gF+ 0.001618×ν d< 0.644  (5), and

wherein the following Conditional Expression (11) is satisfied in a case where a maximum value of heights of a paraxial on-axis light ray on each lens surface of the positive lens that satisfies Conditional Expressions (1) to (3) is set to HP, and a maximum value of heights of a paraxial on-axis light ray on each lens surface of all lenses included in the imaging lens is set to Hmax,

0.5<| HP/H max|  (11).

2. The imaging lens according to claim 1 ,

wherein the positive lens that satisfies Conditional Expressions (1) to (3) satisfies the following Conditional Expression (6) in a case where a focal length of the positive lens is set to fP, and a focal length of the whole system during focusing on an infinite object is set to f,

1< fP/f< 15  (6).

3. The imaging lens according to claim 2 ,

wherein the positive lens that satisfies Conditional Expressions (1) to (3) satisfies the following Conditional Expression (6-1),

1.2< fP/f< 12  (6-1).

4. The imaging lens according to claim 1 , further comprising:

at least one negative lens that satisfies the following Conditional Expressions (7) to (9) in a case where a refractive index at the d line of a negative lens included in the imaging lens is set to nN, an Abbe number at the d line of the negative lens is set to νN, and a rate of change of the refractive index at the d line of the negative lens with respect to a change in temperature at 25° C. is set to dnN/dt,

1.6< nN< 1.85  (7)

40<ν N< 60  (8)

6×10 −6 /° C.< dnN/dt   (9).

5. The imaging lens according to claim 4 ,

wherein the negative lens that satisfies Conditional Expressions (7) to (9) satisfies the following Conditional Expression (10) in a case where a focal length of the negative lens is set to fN, and a focal length of the whole system during focusing on an infinite object is set to f,

−10< fN/f<− 0.5  (10).

6. The imaging lens according to claim 5 ,

wherein the negative lens that satisfies Conditional Expressions (7) to (9) satisfies the following Conditional Expression (10-1),

−7< fN/f<− 1  (10-1).

7. The imaging lens according to claim 4 ,

wherein the negative lens that satisfies Conditional Expressions (7) to (9) satisfies the following Conditional Expression (7-1),

1.65< nN< 1.8  (7-1).

8. The imaging lens according to claim 4 ,

wherein the negative lens that satisfies Conditional Expressions (7) to (9) satisfies the following Conditional Expression (8-1),

42<ν N< 57  (8-1).

9. The imaging lens according to claim 4 ,

wherein the negative lens that satisfies Conditional Expressions (7) to (9) satisfies the following Conditional Expression (9-1),

6.5×10 −6 /° C.< dnN/dt< 11×10 −6 /° C.  (9-1).

10. The imaging lens according to claim 1 ,

wherein the positive lens that satisfies Conditional Expressions (1) to (3) satisfies the following Conditional Expression (1-1),

1.69< nP< 1.71  (1-1).

11. The imaging lens according to claim 1 ,

wherein the positive lens that satisfies Conditional Expressions (1) to (3) satisfies the following Conditional Expression (2-1),

50<ν P< 52  (2-1).

12. The imaging lens according to claim 1 ,

wherein the positive lens that satisfies Conditional Expressions (1) to (3) satisfies the following Conditional Expression (3-1),

−2×10 −6 /° C.< dnP/dt<− 1×10 −6 /° C.  (3-1).

13. The imaging lens according to claim 1 ,

wherein in a case where a lens that satisfies the following Conditional Expression (4-1) is included, the lens that satisfies the following Conditional Expression (4-1) satisfies the Conditional Expression (5),

60<ν d< 75  (4-1).

14. The imaging lens according to claim 1 ,

wherein the following Conditional Expression (11-1) is satisfied,

0.65<| Hp/H max|≤1  (11-1).

15. An optical apparatus comprising the imaging lens according to claim 1 .