Five-lens-type imaging lens group

Abstract

The invention relates to a five-lens-type imaging lens group. The five-lens-type imaging lens group sequentially comprises a diaphragm, a first lens with positive refraction power, a second lens with negative refraction power, a third lens with positive refraction power, a fourth lens and a fifth lens with negative refraction power from the object side to the image side. The image side surface of the first lens is a convex surface, and at least one of the object side surface of the first lens and the image side surface of the first lens is an aspheric surface. The image side surface of the second lens is a concave surface, and at least one of the object side surface of the second lens and the image side surface of the second lens is an aspheric surface. The image side surface of the third lens is a convex surface, and at least one of the object side surface of the third lens and the image side surface of the third lens is an aspheric surface. The object side surface of the fourth lens is a concave surface, and at least one of the object side surface of the fourth lens and the image side surface of the fourth lens is an aspheric surface. The image side surface of the fifth lens is a convex surface, and at least one of the object side surface of the fifth lens and the image side surface of the fifth lens is an aspheric surface. The five-lens-type imaging lens group is applied to high-pixel cell phones and cameras, and the total length of camera lenses can not be excessively long.

Description

technical field [0001] The invention relates to an optical lens, in particular to a five-piece imaging lens group. Background technique [0002] In recent years, with the rise of mobile phone cameras, the demand for miniaturized photographic lenses has been increasing, and the photosensitive components of general photographic lenses are nothing more than charge coupled devices (Charge Coupled Device, CCD) or complementary metal oxide semiconductors (Complementary Metal -Oxide Semiconductor, CMOS) two types, due to the advancement of semiconductor process technology, the pixel area of ​​the photosensitive component is reduced, and the miniaturized photographic lens is gradually developing into the high-pixel field. Therefore, the requirements for imaging quality are also increasing. [0003] Traditional miniaturized photographic lenses mounted on portable electronic products mostly adopt a four-piece lens structure. However, due to the rapid increase in the pixels of mobile p...

AI Technical Summary

Problems solved by technology

[0003] Traditional miniaturized photographic lenses mounted on portable electronic products mostly adopt a four-piece lens structure. However, due to the rapid increase in the pixels of mobile phone cameras, the pixel area of ​​photosensitive components is gradually shrinking. With the continuous improvement of requirements, the ordinary four-piece lens group will not be able to meet the higher-level photographic lens modules, and the electronic products are constantly developing towards thinner and higher performance.

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