Five-sheet type imaging lens set

Abstract

The invention discloses a five-sheet type imaging lens set. The five-sheet type imaging lens set comprises, from an object side to an image side, an aperture, a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens has positive refracting power, a surface of an object side of the first lens in a near optical axis region is a convex surface and a surface of an image side of the first lens in the near optical axis region is a concave surface. The second lens has negative refracting power, a surface of an object side of the second lens in a near optical axis region is a convex surface and a surface of an image side of the second lens in the near optical axis region is a concave surface. The third lens has negative refracting power and the surface of an imageside of the third lens is a concave surface. The fourth lens has positive refracting power, a surface of an object side of the fourth lens in a near optical axis region is a concave surface and a surface of an image side of the fourth lens in the near optical axis region is a convex surface. The fifth lens has negative refracting power and a surface of an image side of the fifth lens in the near optical axis region is a concave surface. The five-sheet type imaging lens set is high in image quality and resolution capability, low in distortion and deformation and low in sensing of manufacture assembly tolerance.

Description

Technical field [0001] The present invention relates to an imaging lens group, in particular to a miniaturized five-piece imaging lens group applied to electronic products. Background technique [0002] High-quality small photographic lenses are now standard equipment in various mobile devices. With the advancement of semiconductor manufacturing, the pixel area on the electronic photosensitive components is getting smaller and smaller, which in turn necessitates finer resolution of the camera lens. In order to be able to present more detailed picture quality. [0003] The conventional 3-4 small lens mounted on mobile devices, such as mobile phones, tablet computers, and other wearable electronic devices, such as US7,564,635 and US7,920,340, cannot present more detailed image quality; A five-element small lens may have better image quality. However, when the aperture is large, such as US8,605,368, US8,649,113, TW application numbers 102137030, 102121155, it is often accompanied by ...

AI Technical Summary

Problems solved by technology

[0003] It is known that 3 to 4 small lenses mounted on mobile devices, such as mobile phones, tablet computers, and other wearable electronic devices, such as US7,564,635 and US7,920,340, cannot present more detailed image quality; and Five-element small lenses may have better image quality, but at large apertures, such as US8,605,368, US8,649,113, and TW application numbers 102137030 and 102121155, it is often accompanied by sensitivity problems in manufacturing and assembly, making the amount Production is not easy, increasing the cost of mass production

Or in order to reduce the assembly tolerance, the surrounding imaging quality has to be sacrificed, making the surrounding imaging blurred or deformed

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