Imaging lens and imaging apparatus

An imaging lens comprising, in order from an object side toward an image plane side:

• a first lens group having positive refractive power and including a plurality of optical elements;
• a second lens group having negative refractive power;
• and
• a third lens group having positive refractive power,
• the second lens group traveling in an optical axis direction upon focusing,
• the plurality of optical elements including, in order from the object side toward the image plane side, at least a first lens having positive refractive power and a second lens,
• wherein the following conditional expressions are satisfied:
• 0.20<DL12/f<0.5 (1)
• νdmin>15 (2)
• where
• DL12 is an air space between the first lens and the second lens,
• f is a focal distance, in a d-line, of entire system upon infinity focusing, and
• νdmin is a minimum value of Abbe numbers of the respective plurality of optical elements.

An imaging apparatus including an imaging lens and an imaging device, the imaging device outputting an imaging signal that corresponds to an optical image formed by the imaging lens, the imaging lens comprising, in order from an object side toward an image plane side:

• a first lens group having positive refractive power and including a plurality of optical elements;
• a second lens group having positive refractive power;
• and
• a third lens group having negative refractive power,
• the second lens group traveling in an optical axis direction upon focusing,
• the plurality of optical elements including, in order from the object side toward the image plane side, at least a first lens having positive refractive power and a second lens,
• wherein the following conditional expressions are satisfied:
• 0.20<DL12/R0.5 (1)
• νdmin>15 (2)
• where
• DL12 is an air space between the first lens and the second lens,
• f is a focal distance, in a d-line, of entire system upon infinity focusing, and
• νdmin is a minimum value of Abbe numbers of the respective plurality of optical elements.

An imaging apparatus including an imaging lens and an imaging device, the imaging device outputting an imaging signal that corresponds to an optical image formed by the imaging lens, the imaging lens comprising, in order from an object side toward an image plane side:

• a first lens group having positive refractive power and including a plurality of optical elements;
• a second lens group having negative refractive power;
• and
• a third lens group having positive refractive power,
• the second lens group traveling in an optical axis direction upon focusing,
• the plurality of optical elements including, in order from the object side toward the image plane side, at least a first lens having positive refractive power and a second lens,
• wherein the following conditional expressions are satisfied:
• 0.20<DL12/R0.5 (1)
• νdmin>15 (2)
• where
• DL12 is an air space between the first lens and the second lens,
• f is a focal distance, in a d-line, of entire system upon infinity focusing, and
• νdmin is a minimum value of Abbe numbers of the respective plurality of optical elements.