Imaging lens

Abstract

The invention discloses an imaging lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, wherein the first lens has negative refractive power and includes a convex surface facing the object side; the second lens has negative refractive power; the third lens has positive refractive power; the fourth lens has positive refractive power; the fifth lens has positive refractive power; the sixth lens has negative refractive power; the seventh lens has positive refractive power and includes a convex surface facing the object side; and the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are sequentially arranged from the object side to the image side along the optical axis. The imaging lens satisfies the following conditions: the absolute value of f6 / f is greater than 0.3 and less than 1.2, wherein f6 is the effective focal length of the sixth lens, and f isthe effective focal length of the imaging lens.

Description

technical field [0001] The invention relates to an imaging lens. Background technique [0002] The development trend of today's imaging lens, in addition to the continuous development towards miniaturization, with different application requirements, it also needs to have a large aperture, high resolution, and the ability to resist changes in environmental temperature. Known imaging lenses can no longer meet today's requirements. In order to meet the needs of miniaturization, large aperture, high resolution and resistance to environmental temperature changes, another imaging lens with a new structure is required. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an imaging lens for the above-mentioned defects of the prior art, which has a short total length, a small aperture value, high resolution, and resistance to environmental temperature changes, but still has a good optical properties. [0004] The technical ...

AI Technical Summary

Problems solved by technology

[0002] The development trend of today's imaging lens, in addition to the continuous development towards miniaturization, with different application requirements, it also needs to have a large aperture, high resolution and the ability to resist changes in ambient temperature. Known imaging lenses can no longer meet today's requirements. In order to meet the needs of miniaturization, large aperture, high resolution and resistance to environmental temperature changes, another imaging lens with a new structure is required.

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