Optical imaging lens

The invention discloses an optical imaging lens which sequentially comprises a first lens to a ninth lens from an object side to an image side along an optical axis, and each lens comprises an object side surface and an image side surface. The first lens has a positive refractive index, a circumferential area of the image side surface of the second lens is a concave surface, an optical axis area of the object side surface of the sixth lens is a concave surface, an optical axis area of the image side surface of the seventh lens is a concave surface, and an optical axis area of the object side surface of the ninth lens is a convex surface. And an optical axis region of the image side surface of the ninth lens is a concave surface. The optical imaging lens only comprises the nine lenses, and the optical imaging lens meets the following conditions: v3 + v9 < = 100.000 or v4 + v9 < = 100.000. The optical imaging lens has the advantages of being small in aperture value, large in image height, high in resolution rat