Patent ID: 9645364
Date: 2017-05-09
CPC Classifications: G02B

Claim:
1. An imaging lens consisting of, in order from the object side, a front group having a negative refractive power, a stop, and a rear group having a positive refractive power, wherein the front group consists of, in order from the object side, a front-group negative lens group having a negative refractive power and a front-group positive lens group having a positive refractive power, the front-group negative lens group consists of three negative lenses, the front-group positive lens group includes one positive lens and one negative lens that is disposed at the most image-side position of the front-group positive lens group, the rear group includes two positive lenses and two negative lenses, and the condition expression (1) below is satisfied: where fAn is a focal length of the front-group negative lens group, and f is a focal length of the entire system.