Patent ID: 9535235
Date: 2017-01-03
CPC Classifications: G02B

Claim:
1. An imaging lens that forms an image of an object, the imaging lens having three optical element groups arranged sequentially from first to third optical element groups from an object side to an image side of the imaging lens, comprising: the first optical element group having positive refractive power and including, in order from the object side to the image side of the imaging lens: a second optical element group having positive refractive power and including: the third optical element group having negative refractive power and including, in order from the object side to the image side of the imaging lens: a sixth optical element that is a double-sided aspheric aberration correction optical element with virtually no refractive power located in an air gap between the first optical element group and the second optical element group, wherein a conditional expression (2a) below is satisfied: where νdN is an Abbe number of the sixth optical element at d-ray.