Patent ID: 9599790
Date: 2017-03-21
CPC Classifications: G02B

Claim:
1. An optical image capturing system, in order along an optical axis from an object side to an image side, comprising: a first lens having positive refractive power; a second lens having negative refractive power; a third lens having refractive power; a fourth lens having refractive power; and an image plane; wherein the optical image capturing system consists of the four lenses with refractive power; at least one of the lenses from the second lens to the fourth lens has positive refractive power; the fourth lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side, and both the object-side surface and the image-side surface of the fourth lens are aspheric surfaces; wherein the optical image capturing system satisfies: where f