Optical lens

Abstract

The application provides an optical lens, which comprises seven lenses in sequence from an object side to an imaging surface along an optical axis, and the seven lenses comprise: a first lens with negative optical power, wherein an image side surface of the first lens is a concave surface; a second lens with negative optical power; a third lens with positive optical power; a fourth lens with negative optical power; a fifth lens with positive optical power; a sixth lens with positive optical power; and a seventh lens with negative optical power, wherein both an object side surface and an image side surface of the seventh lens are concave surfaces; wherein a radius of curvature R13 of the object side surface of the seventh lens and a radius of curvature R14 of the image side surface of the seventh lens satisfy: |(R13-R14) / (R13+R14)|>1. The optical lens has a large field of view and high resolving power, has good imaging quality, and has clear imaging of an edge field of view through reasonable configuration of each lens surface type and reasonable matching of optical power.

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