Optical imaging lens

Abstract

The invention provides an optical imaging lens. The optical imaging lens comprises a first lens, the first lens has negative focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the optical imaging lens also comprises a second lens which has positive focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a convex surface; a third lens; a fourth lens with positive focal power; a fifth lens; and a sixth lens; wherein the refractive index N4 of the fourth lens, the refractive index N5 of the fifth lens, the Abbe number V4 of the fourth lens and the Abbe number V5 of the fifth lens meet the condition that (N4-N5) / (V4-V5) is greater than 0 and less than 0.1; the on-axis distance TTL from the object side face to the imaging face of the first lens, the half of the diagonal length ImgH of an effective pixel area on the imaging face and the maximum half field angle Semi-FOV of the optical imaging lens meet the formula that (TTL*tan(Semi-FOV) / ImgH is larger than 2.7 and smaller than 3.3. The optical imaging lens solves the problem that miniaturization and high imaging quality of an optical imaging lens in the prior art cannot be considered at the same time.

Description

technical field [0001] The present invention relates to the technical field of optical imaging equipment, in particular to an optical imaging lens. Background technique [0002] In recent years, with the rapid development of consumer electronic products, wearable electronic products are rapidly occupying the market. Smart watches and glasses are no longer a simple concept, but have gradually entered people's daily lives. This type of product is easy to wear, small and convenient, and has complete functions. However, reducing the size of the optical imaging lens will easily lead to poor imaging quality of the optical imaging lens. In order to increase the competitiveness of this type of product, the size of the built-in lens, viewfinder range, and high image quality requirements are all options that can be optimized. [0003] That is to say, there is a problem that miniaturization and high imaging quality cannot be balanced in the optical imaging lens in the prior art. Con...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide an optical imaging lens to solve the problem that the miniaturization and high imaging quality of the optical imaging lens in the prior art cannot be balanced

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