Camera lens

Abstract

The invention provides a camera lens, which is equipped with a first lens (with a focal length to be f1), a second lens (with a focal length to be f2), a third lens (with a focal length to be f3), and a fourth lens (with a focal length to be f4) sequentially from an object side to an image side. The following conditional expressions are met: 0.5<f1 / f<1.1, -2<f2 / f<-0.5, 0.65<f3 / f<1.1, -2.5<f4 / f<-1.8, and f is the focal length of the whole camera lens. Through reasonably optimizing the contour, distributing the focal power and selecting the optical material, a small camera lens is designed, and the camera lens has the advantages that the sensitivity is high, the sensibility is low, the color difference can be well corrected, and the optical performance is good.

Description

【Technical field】 [0001] The invention relates to a camera lens, in particular to a camera lens used for portable electronic equipment. 【Background technique】 [0002] In recent years, with the vigorous development of miniaturized camera lenses, the demand for miniature imaging modules is increasing day by day, and the photosensitive elements of general camera lenses are nothing more than two types of photosensitive coupling elements or complementary metal oxide conductor elements. With the advancement of technology, the pixel size of the photosensitive element has been further reduced. In addition, the development trend of today's electronic products is that they have good functions and are light, thin and small. Therefore, miniaturized camera lenses with good imaging quality have become the mainstream in the market. [0003] From the object side to the image side, the existing four-piece imaging lens consists of a first lens with positive power, a second lens with negative...

AI Technical Summary

Problems solved by technology

[0003] From the object side to the image side, the existing four-piece imaging lens consists of a first lens with positive power, a second lens with negative power, a third lens with positive power, and a third lens with negative power. Four-lens, because the distribution and shape of the first lens, the second lens, the third lens, and the fourth lens of the existing four-chip imaging lens are not sufficient, so the sensitivity is not high and cannot Further correction of chromatic aberration, etc., resulting in mediocre optical performance

At the same time, the existing four-piece camera lens is mostly assembled together by structural cooperation, which has certain difficulties in shortening the optical length.

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