Patent ID: 9612422
Date: 2017-04-04
CPC Classifications: G02B

Claim:
1. A photographing lens system comprising sequentially from an object side to an image plane side for forming an image on an image sensor: a first lens having a positive refractive power and comprising an object side surface that is convex toward the object side and an image side surface that is planar; a second lens having a negative refractive power and comprising an image side surface that is concave toward an image side; a third lens having a positive refractive power; a fourth lens having a negative refractive power; and a fifth lens having a negative refractive power and comprising an image side surface that includes at least one inflection point; and wherein the photographing lens system satisfies the following condition where V3 denotes an Abbe's number of the third lens, and V4 denotes an Abbe's number of the fourth lens.